KR200409526Y1 - Threaded sleeve for coupling the threaded deformed reinforcing bars - Google Patents

Abstract

The present invention relates to a reinforcing bar connector which connects a screw bar rebar with a female threaded sleeve and mechanically connects it, and separates it into one or more pairs of inner threaded parts that are engaged without gaps in the inner surface of the screw bar of the screw bar reinforcement and irregularities. The lock nut is loosely coupled to both ends of the sleeve, and the end of the two bars is fastened by an integrated sleeve provided to smoothly tighten the screw bar reinforcement, and then the lock nut fastened to the screw bar of the bar is completely tightened. Strongly presses the outer surface to firmly connect the reinforcing bars, and simultaneously pulls the two bars in both directions to remove the play between the female threaded part of the sleeve and the screw node of the reinforcing bar, so that the joint does not slip even when the tensile load is applied. Safe teeth to prevent cracking of concrete starting from By realizing the sound, grout material is not required to be charged, and the rebar connection work is simple and quick.

According to the threaded sleeve for the joint of the threaded bar reinforcement according to the present invention, the lock nut is temporarily tightened by separating the sleeve in one or more pairs and forming the internal thread part so that there is no void after joining by exactly matching the threaded bar of the bar on the inner surface. This allows the screw to be screwed to the reinforcing bar while the parts are integrated, and firmly connects the two bars with only one operation to completely lock the lock nut fastened to the reinforcing bars at both ends of the sleeve, and at the same time removes the play between the sleeve and the bar. As the grout material is not required to be filled inside the sleeve, connection of reinforcing bars is simple, quick, and the joint is more firm. And the cylindrical sleeve and the lock nut are integrated by elastic restoring force such as elastic O-ring made of elastic body. Lock nuts and This prevents safety accidents caused by falling of these small parts, and makes it easy and quick to connect the rebars with only one part. Enable the connection.

Threaded Reinforcing Bar, Threaded Sleeve, Prefabricated Rebar Net, Sleeve, Locknut

Description

Threaded sleeve for coupling the threaded deformed reinforcing bars}

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

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

3 is a longitudinal cross-sectional view of the coupled state according to the first embodiment of the present invention.

4 is an exploded perspective view according to a second embodiment of the present invention.

5 is a longitudinal sectional view of a coupled state according to a second embodiment of the present invention.

6 is a perspective view showing a coupling sequence according to a second embodiment of the present invention.

7 is a longitudinal sectional view showing a coupling sequence according to a second embodiment of the present invention.

8 is an exploded perspective view according to a third embodiment of the present invention.

9 is a longitudinal cross-sectional view of a coupled state according to a third embodiment of the present invention.

10 is an exploded perspective view according to a fourth embodiment of the present invention.

11 is a longitudinal cross-sectional view of a coupled state according to a fourth embodiment of the present invention.

12 is an exploded perspective view according to a fifth embodiment of the present invention.

Figure 13 is a longitudinal sectional view of the coupled state according to the fifth embodiment of the present invention.

14 is an exploded perspective view according to a sixth embodiment of the present invention.

15 is a perspective view of a coupled state according to a sixth embodiment of the present invention.

16 is a longitudinal cross-sectional view of the coupled state according to the sixth embodiment of the present invention.

17 is an exploded perspective view according to a seventh embodiment of the present invention.

18 is a perspective view of a coupled state according to a seventh embodiment of the present invention.

19 is a longitudinal sectional view of the coupled state according to the seventh embodiment of the present invention.

20 is an exploded perspective view according to an eighth embodiment of the present invention.

21 is a perspective view of an engaged state according to an eighth embodiment of the present invention.

Figure 22 is a longitudinal sectional view of the coupled state according to the eighth embodiment of the present invention.

23 is an exploded perspective view according to a ninth embodiment of the present invention.

24 is a perspective view of a coupled state according to a ninth embodiment of the present invention.

25 is a longitudinal sectional view of the coupled state according to the ninth embodiment of the present invention.

26 is an exploded perspective view according to a tenth embodiment of the present invention.

27 is an exploded perspective view according to an eleventh embodiment of the present invention.

28 is a perspective view of an engaged state according to an eleventh embodiment of the present invention.

29 is a longitudinal sectional view of the coupled state according to the eleventh embodiment of the present invention.

30 is an exploded perspective view according to a twelfth embodiment of the present invention.

31 is a perspective view of a coupled state according to a twelfth embodiment of the present invention.

32 is a longitudinal sectional view of a coupled state according to a twelfth embodiment of the present invention.

33 is an exploded perspective view according to a thirteenth embodiment of the present invention.

34 is a perspective view of a coupled state according to a thirteenth embodiment of the present invention.

35 is a longitudinal sectional view of the engaged state according to the thirteenth embodiment of the present invention.

36 is an exploded perspective view according to a fourteenth embodiment of the present invention.

37 is a perspective view of a coupled state according to a fourteenth embodiment of the present invention.

38 is a longitudinal sectional view of the coupled state according to the fourteenth embodiment of the present invention.

39 is an exploded perspective view according to a fifteenth embodiment of the present invention.

40 is a perspective view of a coupled state according to a fifteenth embodiment of the present invention.

41 is a longitudinal sectional view of the coupled state according to the fifteenth embodiment of the present invention.

42 is an exploded perspective view according to a sixteenth embodiment of the present invention.

43 is a perspective view of a coupled state according to a sixteenth embodiment of the present invention.

44 is a longitudinal sectional view of the engaged state according to the sixteenth embodiment of the present invention.

45 is an exploded perspective view according to a seventeenth embodiment of the present invention.

46 is a perspective view of the engaged state according to the seventeenth embodiment of the present invention.

47 is a longitudinal sectional view of the engaged state according to the seventeenth embodiment of the present invention.

48 is an exploded perspective view according to an eighteenth embodiment of the present invention.

49 is a perspective view of an engaged state according to an eighteenth embodiment of the present invention.

50 is a longitudinal sectional view of the coupled state according to the eighteenth embodiment of the present invention.

51 is an exploded perspective view according to a nineteenth embodiment of the present invention.

52 is a perspective view of a coupled state according to a nineteenth embodiment of the present invention.

53 is a longitudinal sectional view of the engaged state according to the nineteenth embodiment of the present invention.

54 is an exploded perspective view according to a twentieth embodiment of the present invention.

55 is a perspective view of a coupled state according to a twentieth embodiment of the present invention.

56 is a longitudinal sectional view of the engaged state according to the twentieth embodiment of the present invention.

57 is an exploded perspective view according to a twenty-first embodiment of the present invention.

58 is a perspective view of an engaged state according to a twenty-first embodiment of the present invention.

59 is a longitudinal sectional view of the engaged state according to the twenty-first embodiment of the present invention.

60 is an exploded perspective view according to a twenty-second embodiment of the present invention.

61 is a perspective view of a coupled state according to a twenty-second embodiment of the present invention.

62 is a longitudinal cross-sectional view of an engaged state according to a twenty-second embodiment of the present invention.

63 is an exploded perspective view according to a twenty-third embodiment of the present invention.

64 is a perspective view of an engaged state according to a twenty third embodiment of the present invention.

65 is a longitudinal cross-sectional view of an engaged state according to a twenty-third embodiment of the present invention.

66 is an exploded perspective view according to a twenty-fourth embodiment of the present invention.

67 is a perspective view of a coupled state according to a twenty-fourth embodiment of the present invention.

68 is a longitudinal sectional view of the engaged state according to the twenty-fourth embodiment of the present invention.

69 is an exploded perspective view according to a twenty-fifth embodiment of the present invention.

70 is a perspective view of a coupled state according to a twenty fifth embodiment of the present invention.

71 is a longitudinal cross-sectional view of an engaged state according to a twenty fifth embodiment of the present invention.

72 is an exploded perspective view according to a twenty sixth embodiment of the present invention.

73 is a perspective view of a coupled state according to a twenty sixth embodiment of the present invention.

74 is a longitudinal cross-sectional view of an engaged state according to a twenty sixth embodiment of the present invention.

75 is an exploded perspective view according to a twenty-seventh embodiment of the present invention.

76 is a longitudinal sectional view of the engaged state according to the 27th embodiment of the present invention.

77 is an exploded perspective view according to a twenty-eighth embodiment of the present invention.

78 is a perspective view of a coupled state according to a twenty-eighth embodiment of the present invention.

79 is a longitudinal sectional view of the engaged state according to the twenty-eighth embodiment of the present invention.

80 is an exploded perspective view according to a twenty-ninth embodiment of the present invention.

81 is a perspective view of a coupled state according to a twenty-ninth embodiment of the present invention.

82 is a longitudinal cross-sectional view of an engaged state according to a twenty-ninth embodiment of the present invention.

83 is an exploded perspective view according to a thirtieth embodiment of the present invention.

84 is a perspective view of an engaged state according to a thirtieth embodiment of the present invention.

85 is a longitudinal sectional view of the engaged state according to the thirtieth embodiment of the present invention.

86 is an exploded perspective view according to a thirty-first embodiment of the present invention.

87 is a perspective view of an engaged state according to a thirty-first embodiment of the present invention.

88 is a longitudinal cross-sectional view of an engaged state according to a thirty-first embodiment of the present invention.

89 is an exploded perspective view according to a thirty-second embodiment of the present invention.

90 is a perspective view of an engaged state according to a thirty-second embodiment of the present invention.

91 is a longitudinal sectional view of an engaged state according to a thirty-second embodiment of the present invention.

92 is an exploded perspective view according to a thirty-third embodiment of the present invention.

93 is a perspective view of an engaged state according to a thirty-third embodiment of the present invention.

94 is a longitudinal sectional view of the engaged state according to the 33rd embodiment of the present invention.

95 is an exploded perspective view according to a thirty-fourth embodiment of the present invention.

96 is a perspective view of a coupled state according to a thirty-fourth embodiment of the present invention.

97 is a longitudinal cross-sectional view of an engaged state according to a thirty-fourth embodiment of the present invention.

98 is an exploded perspective view according to a thirty-fifth embodiment of the present invention.

99 is a perspective view of an engaged state according to a 35th embodiment of the present invention.

100 is a longitudinal sectional view of the coupled state according to the 35th embodiment of the present invention.

101 is an exploded perspective view according to a thirty-sixth embodiment of the present invention.

102 is a perspective view of an engaged state according to a 36th embodiment of the present invention.

103 is a longitudinal sectional view of the engaged state according to the 36th embodiment of the present invention.

104 is an exploded perspective view according to a thirty-seventh embodiment of the present invention.

105 is a perspective view of an engaged state according to a thirty seventh embodiment of the present invention.

106 is a longitudinal sectional view of the engaged state in accordance with a thirty-seventh embodiment of the present invention;

107 is an exploded perspective view showing a conventional technology.

108 is a perspective view of the engaged state showing the prior art.

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

<Description of Symbols for Main Parts of Drawings>

1, 1a, 1b: threaded bar

11: screw node

2, 2a, 2b, 2c, 2d, 2e: semi-circular slab

20: expansion spring 20a: elastic member

20b: elastic ring 20c: elastic ring

20d: Wave Washer 20e: Elastic

21: female thread portion 22: outer tapered surface

22a: tapered male threaded portion 22b: male threaded protrusion

22c: guide groove 22d: external cross section

23: spring seating groove 24: elastic member seating groove

25: engaging projection 25a: coupling groove portion

26: improvement part 27: match mark

3: solid sleeve

31: female thread portion 32: outer tapered surface

32a: Taper male thread portion 33: Spring seating groove

34: improvement part 35: match mark

4, 4a, 4b, 4c, 4d, 4e, 4f, 4g, 4h, 4i, 4j, 4k, 4m, 4s, 4t, 4u, 4v, 4w,

4x, 4z: cylindrical sleeve

4n, 4p: plate nut

4q: welding sleeve

4r: connecting sleeve

40: Match mark

41: female thread 42: internal coupling jaw

42a: Internal O-ring groove 42b: Fine female thread

42c: tapped hole 42d: coupling spring seating groove

42e: coupling pin seating groove 42f: coupling elastic ring seating groove

42g: combined elastic ring seating groove 42h: combined ring seating groove

42i: combined elastic ring seating groove

43: external coupling jaw

43a: outer o-ring groove 44: grout inlet

45: polygon 46, 46a: improved part

47: Female thread of the joint part 48: Welding improvement part

49, 49a: plate 49b: connecting nut

5, 5a, 5b, 5c, 5d, 5e, 5f, 5g, 5h, 5i, 5z: locknut

51: internal thread 52: inner tapered surface

52a: tapered female threaded portion 52b: female threaded protrusion

53: nut part 54: socket part

55: spline groove 56: improved part

57: internal coupling jaw 57a: internal O-ring groove

57b: fine male threaded portion 57c: missing bump

57d: combined elastic ring seating groove 57e: combined elastic ring seating groove

57f: coupling ring seating groove 57g: coupling elastic ring seating groove

58: outer coupling jaw 58a: outer O-ring groove

59: match mark

6, 6a, 6b, 6c: holding paper socket

61: fine female thread 62: internal O-ring groove

63: internal cross section 64: tapped hole

65: improvement 66: match mark

7, 7a, 7b, 7c, 7d, 7e: internal lock nut

71: male thread portion 72: matching mark

8, 8a, 8b: external lock nut

81: female thread

9, 9a: locking bolt

9b, 9c: intermediate stopper

9d: Elastic O-ring

9e, 9f, 9g: connecting bolt

9h: joint lock nut

9i: stopper

9j: H beam

9k: plate

9m: protective cap

9n: coupling spring

9p: coupling pin

9q: bonded elastic ring

9r: bonded elastic ring

9s: elastic O-ring

9t: coupling ring

9u: bonded elastic ring

91: male thread portion 92: polygonal portion

93: o-ring groove 94: hemisphere

95: wrench groove 96: center hole

97: nail hole

100, 100a, 100b, 100c, 100d, 100e: sleeve

101: female thread 102: improved part

103: fine male thread 104: polygon

105: internal locking jaw 105a: internal female thread

106: External locking jaw

200, 200a, 200b: mating socket

201: end locking jaw 202: middle locking jaw

203: Fine female thread part 204: Polygonal part

300, 300a: projection stopper

301: locking jaw 302: tapered protrusion

303: male thread

400, 400a: Grooved stopper

401: engaging jaw 402: tapered groove groove portion

403: male thread

The present invention relates to a reinforcing bar connector that connects the threaded bar rebar with a female threaded sleeve and connects it in a mechanical manner. More specifically, the present invention relates to a pair of semicircular sleeves having a female threaded part in which a threaded bar of the bar is fastened to an inner surface thereof. Reinforcing the ends of the reinforcing bar, and then connect the reinforcing bar by fastening the socket-shaped lock nut fastened to the reinforcing bar at both ends, or by connecting the socket-shaped lock nuts to both ends of the pair of semi-circular sleeves and screwed into an integrated sleeve By connecting and reinforcing the bar reinforcing bar, the lock nut fastened to the reinforcing bar is completely tightened, thereby restraining a pair of semi-circular sleeves integrally to connect the reinforcing bars, and simultaneously pulling the two bars in both directions to remove the play in the joints. To prevent the slip of the joint by By integrating a large nut to the sleeve by handling as a part it relates to a reinforcement fitting, which greatly improves the management and operability of the part.

In general, the reinforcing steel used as a framework in the construction of reinforced concrete structures is mainly composed of two rows of ribs that are symmetrically over the entire length in the longitudinal direction and the longitudinal direction in order to improve the adhesion stress with the concrete. Since the reinforcing bars are produced in a limited length for transport or work convenience, most of them are connected and used. There are various methods for connecting the deformed reinforcing bars.

The most widely used method is the double joint method, which overlaps the ends of two reinforcing bars and binds them with a binding line.This method is inferior in safety because the joint depends only on the reinforcing force of the reinforcing bars. In the gas pressure welding method, which is pressurized with air, heat deformation occurs at the joints, causing secondary stresses, which makes the joints more vulnerable than the rebar base material.The ribs and nodes are processed in circular shape by upsetting the ends of the two bars or by forging. Threaded joints that connect to female threaded couplers by cutting and rolling the male threads have a problem that external forces are applied to the reinforcing bars so that the joints are different from the rebar base material and are more vulnerable than the base material.

In the regulation on the production of reinforcing bars, in order to prevent them from being easily collapsed even when heat is applied to the reinforced concrete structures, the reinforcing bars are produced by maintaining the material properties similar to those of concrete and thermal expansion. Since the name of the reinforcing bar does not allow the overlapping method for rebar joints of D29 or more (29 mm in diameter), as described above, the reinforcing bar is connected by gas pressure welding or mechanical method. It is a joint method that changes the original material properties of rebar by secondary processing, and inevitably permits this connection method because there is no best joint method that can be connected without changing the original material properties of rebar. to be.

As shown in Figures 107 to 109, by solving the problems of the conventional reinforcing bar method and the need for the best connection method that can be connected while maintaining the original material properties of the rebar, the thread form on the outer surface of the rebar Screw bar reinforcing bars (1, 1a) forming the thread bar (11) of the joint was developed and connected to the sleeve (4z) with a female thread portion 41 to which the screw bar (11) of the bars (1, 1a) is fastened to the inner surface. However, the screw bone of the female threaded portion 41 of the sleeve 4z of the reinforcing bar 1, 1a is fastened so that the pitch of the screw node 11 of the reinforcing bars 1, 1a is long and the shape of the screw is not precise. Since it forms larger than the screw node 11, when the two bars (1, 1a) are fastened with the sleeve (4z), there is a lot of play between the sleeve (4z) and the bars (1, 1a), so the fastening is easy to loosen and slip occurs. The lock nut 5z is fastened to both ends of the sleeve 4z, and the inside of the sleeve 4z is The play is removed by filling the grout material, but it is cumbersome to prepare and fill the grout material separately, and the strength of the grout material is only about 10% of the reinforcing bar, so that it is not securely bound and the pitch of the reinforcing bars (1, 1a) is long. Since the angle of inclination is large, a lot of force is required to fasten the lock nut 5z, and there is a safety problem that the lock nut 5z can be easily released to external vibration.

In addition, since the two lock nuts 5z are not integrally combined with the sleeve 4z and are provided as separate parts, it is difficult to manage the parts and the lock nuts are relatively small. Due to the high risk, the need for reinforcing bar connections that can be easily connected with only one part is being reduced due to the nature of the construction site, which requires the safety and workability of the work, and the cost reduction due to the work speed.

In addition, in connection of prefabricated reinforcing bars, which are already reinforced with threaded bar reinforcement, where reinforcing bars are not individually rotated or flowing in the longitudinal direction, the starting points of the threads at the ends of the two bars which are opposed to each other do not coincide. There is a problem that can not be connected by.

The present invention is to solve the problems in the conventional joints of the threaded bar reinforcement described above, the object is to separate the at least one pair of female threads formed in the inner surface of the threaded bar reinforcement with the threaded section of the threaded bar reinforcement without gaps. Cover the ends of the two rebars with a sleeve, and then securely tighten the outer surface of the sleeve by tightly tightening the socket-shaped locknuts fastened to the threaded bars of the rebars at both ends of the sleeves to securely connect the two reinforcing bars, The clearance is also completely removed. An integrated sleeve is provided to loosen the lock nuts on both ends of the pair of sleeves to secure the threaded bar reinforcing smoothly, and then the ends of the two bars are fastened to the threaded bar of the bar. Lower the outer surface of the sleeve by fully tightening the lock nut By squeezing the reinforcing bars, the gap between the sleeve and the reinforcing bars is removed, and no slip occurs at the joint even when the tensile load is applied, thus preventing the cracking of the concrete from the joint and filling the grout. The connection of reinforcing bars is simplified by eliminating the need for reinforcement, and the cylindrical sleeve and the lock nut are integrated to handle the reinforcing bars more easily and quickly. It is to make it easy and firm to connect the prefabricated rebar network.

The present invention for achieving the object as described above, in the form of a combination of the sleeve and the nut and the socket is separated into a pair of one or more pairs of female threads of the same shape that is fully engaged without a void by fastening the screw node of the rebar on the inner surface. Consists of a pair of lock nuts formed with a screw node of the reinforcing bar and a female thread portion of the reinforcing bar, the pair of one or more sleeves and the lock nut is combined to be integrally fastened to the ends of the two bars and then fastened to the reinforcing bars at both ends of the sleeve By fully tightening a pair of locknuts, the outer surface of one or more pairs of sleeves is strongly pressed to firmly connect the reinforcing bars, and at the same time, they are supported by the threaded bars of the rebar, and the two bars are pulled in both directions to pull the female threads of the sleeves and the screw nodes of the bars. By removing the fine play between the completely to prevent slipping in the joints, The key feature is to securely connect the reinforcing bars and completely remove the play between the sleeves and the reinforcing bars with only one operation of locking the lock nut fastened to the reinforcing bars at both ends of the pair of sleeves surrounding the ends of the two bars.

The present invention has a function of bundling the lock nut and the cylindrical sleeve and the lock nut integrally coupled to both ends of the cylindrical sleeve and the cylindrical sleeve formed with the same female thread portion to which the screw node of the rebar is fastened on the inner surface. An elastic O-ring made of an elastic body with elastic restoring force to rotate and lock a pair of lock nuts fastened to the rebar at both ends of the cylindrical sleeve, and to prevent the lock nut from easily detaching from the cylindrical sleeve during transportation or work. It is composed of a pair of lock nuts integrally coupled to the cylindrical sleeve with an elastic o-ring made of an elastic body, and screwed to the ends of the two reinforcing bars, and a pair of lock nuts fastened to the two bars at both ends of the cylindrical sleeve completely. The two bars are supported by By removing the fine play between the threaded bar of the rebar fastened to the inner surface of the cylindrical sleeve and the female threaded portion of the cylindrical sleeve to prevent slippage of the joint, the sleeve and the lock nut are integrated to make the construction work simple and quick. It is characteristic.

The present invention is composed of two cylindrical sleeves formed with the same female threaded portion to which the screw node of the reinforcing bar is fastened on the inner surface, and a coupling socket for restraining the two cylindrical sleeves integrally so that the reinforcing bars are not rotated in the axial direction. It enables the connection of non-moving pre-assembled rebar network, quick connection work and strong joint.

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

1 to 3 are a perspective view and a cross-sectional view according to a first embodiment of the present invention.

According to the figure, the semicircular sleeves 2 are constituted by a pair, and the bars 1 and 1a inserted into the sleeves 2 while simultaneously holding and restraining the outer surfaces of the pair of semicircular sleeves 2 are integrated. It consists of a pair of locknuts (5) for removing the play between the sleeve and the sleeve (2) is characterized by a simple and robust connection of the two threaded bars (1, 1a).

The semi-circular sleeve (2) is formed in a semi-cylindrical shape of a length in which a plurality of screw nodes 11 of the reinforcing bars (1, 1a) are fastened while surrounding half of the cross section of the reinforcing bars (1, 1a). A female thread portion 21 is formed to be engaged with the screw node 11 of 1a. The female thread portion 21 is completely engaged with the screw node 11 of the reinforcing bars 1 and 1a to be connected so that there is no gap. It is formed of a female thread equal to the screw node 11 of the reinforcing bar, and can also form a deeper screw bone in the middle of the axial direction to accommodate the bent or protrusion of the ends of the reinforcing bars 1 and 1a. The corners of the inner surface of both ends of the inner edge of the chamfered improved portion 26 is formed so that the leading end of the reinforcing bar is easily screwed in, and the outer surface of the tapered outer taper that the outer diameter decreases toward both ends from the center of the axial direction The surface 22 is formed.

The lock nut 5 has a shape in which the socket extends in the nut in the axial direction, and the outer surface of the nut part 53 having a nut shape is formed in a polygonal cross section so as to be tightened with a tool such as a spanner. The outer surface of the socket portion 54 is made of a plurality of spline grooves 55 grooved in the axial direction to improve the adhesion to the concrete, the inner surface of the nut portion 53 is connected to the screw node 11 of the reinforcing bar The female threaded portion 51 of the same shape is fastened to each other, and the inner surface of the socket portion 54 has a step from the inner surface of the nut portion 53 to increase the inner diameter, and the inner diameter of the semicircular sleeve 2 gradually increases toward the end. A tapered inner tapered surface 52 formed of the same taper as the outer tapered surface 22 is formed, and the inner tapered surface 52 has the same pitch as the screw node 11 of the reinforcing bars 1 and 1a and has the same specification. The same tapered female threaded portion 52a is formed and the screw When tightening, the friction surface with the outer tapered surface 22 of the semi-circular sleeve 2 is reduced so that it rotates smoothly, and an improved portion 56 in which the corner portion of the inner surface of the nut part 53 is chamfered is formed and is reinforced. This allows for smooth threading and facilitates screwing.

In addition, the matching mark 59 is displayed on the outer surface of the socket portion 54 of the lock nut 5, and the matching mark 27 is displayed at the center of the axial direction of the outer surface of the semi-circular sleeve 2, but the two parts are joined. In this case, the threads of the female threads 21 and 51 of the two parts are continuously connected to each other and marked to coincide with each other.

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

The lock nut 5 is fastened to the two threaded bar bars 1 and 1a to be connected with the nut part 53 as the head, and the two bars 1 and 1a are butted together. A pair of semicircular sleeves 2 are covered with the butt portion of (1, 1a) so that the female threaded portions 21 face each other, and the thread of the female threaded portion 21 of the semicircular sleeve 2 and the two reinforcing bars 1, 1a. The nodes 11 are correctly engaged, and then the lock nuts 5 fastened to the two bars at each end of the pair of semi-circular sleeves 2 are fastened in the sleeve direction so that the socket portion 54 is connected to the two bars (1). , Strongly pressing the outer surface of the pair of sleeves 2 facing each other while covering the ends of 1a) to firmly connect the reinforcing bars, and at the same time, the nut part 53 supports the screw nodes of the reinforcing bars so that the two bars are in both ends directions. Slip due to external tensile load by removing the fine play of the joint by towing This prevents cracking in the concrete starting from the joint.

By the way, in the coupling method, even if the pair of semi-circular sleeve (2) to the lock nut (5) is coupled to the integrated semi-circular sleeve (2) by screwing to the reinforcing bar, the effect is the same.

Reinforcing bar connector of the first embodiment of the present invention, a pair of semi-circular sleeve (2) by the operation of fully engaging the lock nut (2) fastened to the screw node 11 of the reinforcement at both ends of the semi-circular sleeve (2) The key is that there is an effect that two actions occur by strongly restraining and connecting the steel bars (1, 1a) fastened by pressing and completely removing the fine play between the semi-circular sleeve (2) and the bars (1, 1a). Characteristic.

Reinforcing bar connector of the first embodiment of the present invention, the female threaded portion 21 of the semi-circular sleeve (2) is formed to be equal to the screw node 11 of the reinforcing bar to be completely engaged without gaps, the interior of the lock nut (5) By forming the tapered surface 52 and the outer tapered surface 22 of the sleeve 2 in the same manner, the lock nuts 5 already fastened to the two rebars at both ends of the semi-circular sleeve 2 are semi-circular sleeve 2, respectively. When tightened in the direction of, the thread of the female threaded portion 51 of the lock nut 5 strongly presses the outer tapered surface 22 of the semi-circular sleeve 2 so that the threaded node 11 of the rebar and the female thread of the semi-circular sleeve 2 are tightened. The part 21 is tightly unevenly coupled and is firmly connected with almost no play, while the nut part 53 of the lock nut 5 pulls the two bars 1 and 1a from the semi-circular sleeve 2 in both directions. Threaded portion 11 of semi-circular sleeve 2 and threaded portion 11 of reinforcing bars 1 and 1a. It also removes very fine clearances to prevent slippage of the joints due to external tension loads.

However, in order to connect the threaded bar reinforcement with a cylindrical sleeve having a conventional female thread, the female threaded portion of the cylindrical sleeve must be formed with a screw bone larger than the threaded bar of the reinforcing bar to be screwed to the reinforcing bar, and even after the coupling is completed, the threaded part of the sleeve and the threaded bar of the bar If there is a large gap between them and the tensile load acts on the joint, it slips in both directions and cracks occur in the concrete.In order to solve this problem, the grout material is filled into the sleeve, and the gap between the female thread of the sleeve and the screw node of the rebar is removed. Although tight bonds are secured, the strength of the grout material is weaker than the reinforcing bars, and thus inevitably becomes incomplete bonds, and the work of filling the grout material separately is cumbersome and takes a long time.

4 to 7 are a perspective view and a cross-sectional view according to a second embodiment of the present invention.

According to the drawings, the basic structure of the second embodiment of the present invention is the same as the first embodiment of the present invention and only some components are added, and the structure of the lock nut 5 is the first embodiment of the present invention. The lock nut 5 is the same as the example, and the semicircular sleeve 2a is formed by the thickness of the expansion spring 20 so that the female threaded portion 21 of the axial center portion of the inner surface of the lock nut 5 can be seated in the coil spring type expansion spring 20. A spring seating groove 23 having a deeply formed female threaded portion 21 is added thereto, and a tapered male threaded portion having a tapered female threaded portion 52a of the lock nut 5 is screwed to the outer tapered surface 22. The addition of 22a is a feature different from the first embodiment of the present invention, in which the tapered male threaded portion 22a of the semicircular sleeve 2a and the tapered female threaded portion 52a of the lock nut 5 are provided. Tighten the pair of semi-circular sleeves 2a with the lock nut 5 Form to integrate.

In addition, the coincidence mark 59 is displayed on the outer surface of the socket portion 54 of the lock nut 5, and the coincidence mark 27 is displayed at the center of the outer surface of the semicircular sleeve 2a in the axial direction. The threads of the female threads 21 and 51 of the two parts are continuously connected to each other and marked to coincide in the same position as one female thread.

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

As shown in FIG. 6, first, the expansion spring 20 is seated in the spring seating grooves 23 of the pair of semi-circular sleeves 2a and the pair of semi-circular sleeves 2a face the female threaded portion 21. Then, the two lockers 5 are loosely fastened to both ends of the pair of semi-circular sleeves 2a, and the pair of semi-circular sleeves 2a are integrated into one part to form one reinforcing bar (1). Fasten the entire length in advance) and then reversely rotate the integrated semicircular sleeve 2a which is fastened to the end face of the one reinforcing bar 1 against the other reinforcing bar 1a. After screwing to the end of the other reinforcing bar (1a), and then fully tightening the lock nuts (5) fastened to each of the two bars at both ends of the semi-circular sleeve (2a), the socket portion 54 of the lock nut (5) Presses a pair of semi-circular sleeves (2a) to restrain the two bars integrally At the same time, the two rebars are pulled in both ends by the nut part 53 to remove the minute play between the sleeve 2a and the rebars 1 and 1a.

The reinforcing bar connector of the second embodiment of the present invention is equally engaged with the screw node 11 of the screw bar reinforcing bars 1 and 1a to which the female threaded portion 21 of the pair of semi-circular sleeves 2a is completely engaged without voids. It is formed, and the expansion spring 20 is installed in the spring seating groove 23 of the semi-circular sleeve 2a so as not to protrude from the bottom surface of the screw bone of the female threaded portion 21, so that the screw nodes 11 of the reinforcing bars 1 and 1a The pair of semi-circular sleeves 2a are overlapped so that the female threaded portions 21 face each other, and then the pair of lock nuts 5 are loosely fastened and integrated at both ends to form the semi-circular sleeves 2a. It is opened in the circumferential direction by the expansion spring 20 seated therein, and the integrated semicircular sleeve 2a can be rotated with a small force to the reinforcing bar with a small force to be screwed, and the lock nut 5 is the semicircular sleeve. At the both ends of (2a), The inner tapered surface 52 of the socket portion 54 of the surface lock nut 5 and the outer tapered surface 22 of the semi-circular sleeve 2a interact with each other to strongly press the semi-circular sleeve 2a in the direction of the center of gravity. The female threaded portion 21 of the sleeve 2a is coupled to the threaded portion 11 of the reinforcing bar without any play, and at the same time, the nut 53 of the lock nut 5 pulls the reinforcing bars in both directions to remove fine play. However, as shown in Fig. 7, the cross section of the threaded section 11 of the rebar is trapezoidal, and the female threaded portion 21 of the pair of semicircular sleeves 2a is also formed in the same trapezoidal cross section so that the semicircular sleeve 2a is locked. Loose screwing with the nut (5) creates a clearance between the threads, which makes it easy to fasten the integrated semi-circular sleeve (2a) to the reinforcing bars (1, 1a), so that the female thread portion 21 of the semi-circular sleeve (2a) It is possible to fasten the screw even if it is formed to be completely in close contact with the screw node 11 of the rebar, which is possible because the sleeve is separated into a pair is the technical core of the present invention.

The reinforcing bar connector of the second embodiment of the present invention is a method of screwing the reinforcing bars 1 and 1a with a semicircular sleeve 2a integrated by the lock nut 5, but also for rotational fastening due to the characteristics of the screw coupling. Since the clearance between the existing threads is completely removed, it is not necessary to fill the grout material to prevent slip and loosening in the conventional connection method of reinforcing bars by a female threaded sleeve, and the fastening is very easy. In general, threaded joints rotate due to the engagement of the threads, so that there is a gap between the threads of the two connecting members so that they can be tightened even with a small force without frictional resistance. The threaded sleeve connecting (1, 1a) is formed more relaxed because the threaded node 11 of the reinforcing bar is not large and precise, resulting in greater play.

Reinforcing bar connector of the second embodiment of the present invention, the cylindrical sleeve is separated into semi-circular shape to form a pair of semi-circular sleeve (2a), the lock nut (5) of the nut portion 53 and the socket portion 54 When the structure is formed, the semi-circular sleeve 2a is separated and loosely applied to the lock nut 5 even if the female threaded portion 21 of the semi-circular sleeve 2a is made to be fully engaged with the threaded node 11 of the reinforcing bar without any voids. Since it is fastened, it is possible to fasten the reinforcing bars by screwing. When the ends of the two bars are fastened, and the lock nut 5 is completely tightened, the semicircular sleeve 2a is secured by the socket part 54 of the lock nut 5. Since the female thread portion 21 and the screw node 11 of the reinforcing bar are completely adhered without voids, slip does not occur even under compression and tensile load, and the fine portion of the lock nut 5 also removes fine clearance, The sleeve hassle like conventional method There is no need to fill the grout material, and the bonding strength is stronger than that of the grout material, and the operation is simple and the speed can be greatly reduced.

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

According to the drawings, the basic structure of the third embodiment of the present invention is the same as the first embodiment of the present invention and only some components are added, and the structure of the pair of semi-circular sleeves 2a is Same as the semicircular sleeve 2a of the second embodiment, and the basic structure of the locknut 5a is the same as that of the locknut 5 of the first embodiment of the present invention, and there is only a tapered female screw portion 52a on the inner surface and the semicircular sleeve Another feature is that the same female threaded projection 52b is formed in two parts symmetrically so that the tapered male threaded portion 22a of (2a) can be screwed together, and the tapered male threaded portion 22a is formed on the outer surface of the semicircular sleeve 2a. Is formed to reduce the friction area with the inner tapered surface 52 of the lock nut 5a, so it is easy to fasten the lock nut 5a at both ends of the semicircular sleeve 2a, and the taper of the semicircular sleeve 2a is Male threaded portion 22a and Locker A female screw projection (5a) (52b) is only formed to integrally have concluded as a pair of semi-circular sleeves (2a) of the lock nut (5a).

Coupling method and effect of the third embodiment of the present invention is the same as the second embodiment of the present invention.

10 to 11 are a perspective view and a cross-sectional view according to a fourth embodiment of the present invention.

According to the drawings, the basic structure of the fourth embodiment of the present invention is the same as the first embodiment of the present invention, and only some components are added, and the structure of the pair of locknuts 5 Same as the locknut 5 of the first embodiment, the basic structure of the pair of semicircular sleeves 2b is the same as that of the semicircular sleeve 2 of the first embodiment of the present invention, and only the transverse amount of the semicircular sleeves 2b. An elastic member seating groove 24 is formed by adding a recess into which an elastic member 20a made of an elastic body is inserted in a cross section, and the lock nut 5 is formed on the outer tapered surfaces 22 on both sides of the semicircular sleeve 2b. Another feature is that the male screw protrusion 22b is added to the tapered female screw portion 52a of the tapered female screw portion 52a so as to be coupled to the tapered female screw portion 52a. The taper of the male screw protrusion 22b and the lock nut 5 of the semicircular sleeve 2b is additionally formed. Female threaded portion 52a is a pair of semi-circle slits When the grooves 2b are formed to be integrated by locking with the lock nut 5, and the tapered female screw portion 52a is formed on almost the entire surface of the inner tapered surface 52 of the pair of lock nuts 5, When screwing the lock nut 5 at both ends of the semi-circular sleeve 2b, the friction area with the outer tapered surface 22 of the pair of semi-circular sleeves 2b is reduced to facilitate screwing, and the lock nut ( 5) is engaged with the semi-circular sleeve 2b integrated with the lock nut 5 with a small force while being opened in the circumferential direction by the elastic member 20a introduced into the pair of semi-circular sleeves 2b integrated with each other. Rotate to screw into rebar.

The coupling method and the effect of the fourth embodiment of the present invention is the same as the second embodiment of the present invention, and the elastic member 20a only performs the action of the coupling spring.

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

According to the drawings, the basic structure of the fifth embodiment of the present invention is the same as the first embodiment of the present invention, and only some components are added, and the structure of the pair of semi-circular sleeves 2b is Same as the semi-circular sleeve 2b of the fourth embodiment, the nut portion 53 of the lock nut 5 of the first embodiment of the present invention is separated into the inside and the outside so that the outer tubular body becomes the holding paper 6. The outer portion of the socket portion 54 and the nut portion 53 is coupled to each other. The inner surface of the nut portion 53 is formed with a fine female thread portion 61 formed of a pitch of a common screw, and the inner surface of the socket portion 54. The width of the screw bone of the tapered female screw portion 52a is wider than that of the semi-circular sleeve 2b, so that there is a margin for mutual fastening, and the inner tube becomes the inner lock nut 7 so that the nut portion ( 53, the same screw thread and the female thread 61 Another feature is that the fine male threaded portion 71 is formed, in which the clamping socket 6 and the inner lock nut 7 are integrally fastened so as to be coupled to both ends of the pair of semi-circular sleeves 2b, Reinforce the pair of semi-circular sleeves 2b integrally by applying an adhesive to the micro female threaded portion 61 of the blotting socket 6 and the micro male threaded portion 71 of the inner lock nut 7. , 1a) in the process of screwing, the inner lock nut (7) is not separated from the holding paper (6) to complete the connection of the two reinforcing bars and then adhesive enough to separate in the process of tightening the holding paper (6) .

Coupling method, working principle and effect of the fifth embodiment of the present invention are as follows.

First, the inner lock nut 7 coated with the adhesive on the fine male threaded portion 71 is fastened to the blotting socket 6 to be coupled to both ends of the pair of semi-circular sleeves 2b, and then integrated. 1) the entire semicircular sleeve 2b integrated in 1) is fastened, and the other semi-circular sleeve 2b fastened to one rebar 1 is rotated against the other bar 1a to be connected. After the reinforcing bar 1a is also fastened, and the pair of blotting sockets 6 are fully engaged, the blotting sockets 6 are no longer centered by the resistance of the outer tapered surface 22 of the semi-circular sleeve 2b. After reaching the limit point that cannot proceed, the retaining socket 6 and the inner lock nut 7 screwed back are retracted in both ends. In this case, the reinforcing bars 1, 1, of the inner lock part 7 of the inner lock nut 7 are retracted. Since the screw node 11 of 1a is engaged, the two bars ( 1 and 1a are also pushed in both ends to remove the fine play between the female threaded portion 21 of the semi-circular sleeve 2b and the screw segment 11 of the two reinforcing bars, and a pair of semi-circular sleeves by the socket portion 54. (2b) is pressed and restrains and connects the rebar. However, the fine female threaded portion 61 and the fine male threaded portion 71 of the holding paper socket 6 and the inner lock nut 7 have a shorter pitch than the threaded portion 11 of the rebar, so that the inclination angle is smaller. 11) the clamping socket 6 can be fastened to the semi-circular sleeve 2b more strongly with a much smaller force than to fasten the lock nut consisting of the female threaded part formed therein, and the tapered female threading part of the clamping socket 6 can be fastened. Since the width of the screw bone 52a is wider than the width of the male threaded portion 22b of the semicircular sleeve 2b, the internal lock nut 7 and the holding paper 6 can be fastened with a small pitch.

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

According to the drawings, the basic structure of the sixth embodiment of the present invention is the same as the first embodiment of the present invention, only some components are added, the basic structure of a pair of semi-circular sleeve (2c) is the present invention Same as the semi-circular sleeve 2 of the first embodiment of the present invention, the female screw portion (by the thickness of the expansion spring 20 so that only the coil spring-like expansion spring 20 can be seated in the axial center portion of the female screw portion 21). A spring seating groove 23 having a depth of 21 is added and formed, and is wider than the tapered female screw portion 52a so as to be engaged with the tapered female screw portion 52a of the blotting socket 6a to the outer tapered surface 22. Another feature is that the male screw protrusion 22b is formed in the form of this small, short male thread.

In addition, the lock nut 5 of the first embodiment of the present invention is divided into three parts, so that the socket portion 54 is a holding paper socket 6a, and one end of the inner surface to which one end of the inner lock nut 7a is fitted is circular. The inner o-ring groove portion 62 in which the elastic o-ring 20c is mounted is added, and an improvement portion 65 is formed in which the corners of the inner surface on which the inner o-ring groove portion 62 is formed are chamfered to form the inner lock nut 7a. To facilitate the initial introduction of the nut portion 53 is separated into the inside and the outside, the inside is an inner lock nut (7a), the outer surface of one side is in contact with the inner o-ring groove 62 of the holding socket (6a) An inner o-ring groove 57a is formed at the other side, and the other side is formed with a fine male threaded part 71 which is screwed with the outer lock nut 8, and the outside of the nut part 53 becomes the outer lock nut 8. Is a fine female screw portion 81 is screwed to the inner lock nut (7a) is formed This is another characteristic.

The process of integrating and combining the holding paper socket 6a, the inner lock nut 7a, and the outer lock nut 8, in which the lock nuts are separated into three, first, the outer lock nut 8 to the inner lock nut 7a. ), The elastic o-ring 20c is seated in the inner o-ring groove 57a of the inner lock nut 7a, inserted into both ends of the blotting socket 6a, and then coupled to both ends of the pair of semi-circular sleeves 2c. Combine. In this case, the elastic ring (20c) is seated between the inner lock nut (7a) and the holding paper (6a) by using the elastic restoring force of the elastic ring (20c) is coupled to both ends of the pair of semi-circular sleeve (2c) This is to prevent the idling between the two parts even if screwed to the rebar in the state to be accompanied together.

In addition, the coincidence mark 72 is displayed on the outer surface of the inner lock nut 7a, the coincidence mark 66 is displayed on the outer surface of the holding paper socket 6a, and the coincidence mark 27 is located at the center of the axial direction of the outer surface of the semicircular sleeve 2c. When the three parts are joined together, the coincidence mark of the three parts is positioned at the position where the threads of the internal lock nuts 7a and the female threads 21 and 51 of the semi-circular sleeve 2c are continuously connected to form one female thread. Match (72, 66, 27).

The coupling method and the effect of the sixth embodiment of the present invention are as follows.

First, the entire semicircular sleeve 2c integrated into one reinforcing bar 1 is fastened, and the other semi-circular sleeve 2c fastened to one reinforcing bar 1 to the other bar 1a to be connected. Rotate to reverse the other one of the reinforcing bars (1a), and then fully tighten the internal lock nuts (7a) fastened to each of the two bars (1, 1a) to pull the two bars (1, 1a) in both directions Then, when the pair of outer lock nuts 8 are completely tightened, the holding paper 6a reaches the limit point at which the linear taper can no longer be linearly moved by the resistance of the outer tapered surface 22 of the semi-circular sleeve 2c. After that, the inner lock nut 7a screwed to the outer lock nut 8 is retracted in both ends. At this time, the screw nodes of the reinforcing bars 1 and 1a to the female thread part 51 of the inner lock nut 7a. Both bars (1, 1a) are also both ends because the state of (11) is fastened. The fine play between the female threaded portion 21 of the semi-circular sleeve 2b and the screw node 11 of the two bars is removed while pushing in the direction. As such, the fine female screw portion 81 and the fine male screw portion 71 of the outer lock nut 8 and the inner lock nut 7a have a smaller pitch than the screw segment 11 of the rebar, and thus have a smaller inclination angle. The locking nut can be tightened with a smaller force than the locking nut, and the separation of the coupling socket 6a and the external lock nut 8 even if the locking nut 6a is rotated. The frictional resistance between the tapered female threaded portion 52a of the coupling socket 6a and the outer tapered surface 22 of the semi-circular sleeve 2c is reduced because it does not resist and moves slightly in the axial direction. Fastening is easier.

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

According to the drawings, the basic structure of the seventh embodiment of the present invention is the same as the first embodiment of the present invention and only some components are added, and the basic structure of the semi-circular sleeve 2d is the first embodiment of the present invention. Same as the semi-circular sleeve 2 of the example, but as deep as the thickness of the expansion spring 20 so as to seat the expansion spring 20 in the form of a coil spring in the axial center of the female threaded portion 21 of the semi-circular sleeve 2d. The formed spring seating grooves 23 are added to each other, and the guide grooves 22c formed by elongating grooves having a horizontal bottom surface in the axial direction are added to both outer tapered surfaces 22 of the semicircular sleeve 2d. One side is formed on both sides of the transverse direction is formed by the coupling groove (25a) is formed as a groove and the other side is formed by the addition of the protruding coupling protrusion (25).

In addition, the lock nut 5 of the first embodiment of the present invention is separated into two parts, and the socket portion 54 becomes a blotting socket 6b. The inner surface coupled with the inner lock nut 7b is an elastic O-ring 20c. The inner O-ring groove portion 62 is inserted, and the inner surface of the other side is an inner tapered surface 52 without a screw portion, the diameter of which increases toward the end portion, so that the coupling bolt 9 can be fastened to the middle portion in the axial direction. The tab hole 64 is formed to be added, and the nut part 53 is formed as an inner lock nut 7b, which protrudes in the axial direction at one end with a step of decreasing the outer diameter, and an elastic o-ring 20c is formed on the protruding outer surface thereof. It is characterized in that the inner O-ring groove portion 57a is seated.

The process of integrating the immersion socket 6b and the inner lock nut 7b into the pair of semi-circular sleeves 2d by combining the elastic o-ring 20c in the inner o-ring groove 57a of the inner lock nut 7b is first performed. ) Is seated and coupled to the holding paper socket 6b, and the pair of semi-circular sleeves 2d are engaged with the coupling recess 25a and the engaging projection 25 to engage the integrated inner lock notes 7b at both ends. After the holding socket 6b is engaged, the coupling bolt 9 is fastened to the tab hole 64 of the holding socket 6b so that the holding socket 6b and the semi-circular sleeve 2d are combined to facilitate handling and fastening. To facilitate.

In the above, seating the elastic O-ring 20c between the holding paper socket 6b and the inner lock nut 7b is coupled to both ends of the pair of semi-circular sleeves 2d and idling by the elastic restoring force while screwing the reinforcing bars. When locking the inner lock nut (7b) while preventing the rotation is possible, by forming a coupling groove 25a and the engaging projection 25 in a pair of semi-circular sleeve (2d) to facilitate the coupling.

The coupling method and the effect of the seventh embodiment of the present invention are as follows.

First, the entire semicircular sleeve 2d integrated into one reinforcing bar 1 is fastened, and the other semi-circular sleeve 2d fastened to one reinforcing bar 1 to the other bar 1a to be connected. When the other side of the reinforcing bar (1a) is also fastened by rotating the back, and the pair of inner lock nuts (7b) fastened to the two bars respectively at both ends of the semi-circular sleeve (2d), the holding paper socket (6b) While moving linearly in the axial direction, a pair of semi-circular sleeves 2d are pressed to restrain the two bars 1 and 1a integrally, and the two bars are fastened to the female thread part 51 of the inner lock nut 7b. Both (1, 1a) are pulled in both ends to remove minute play between the female threaded portion 21 of the semi-circular sleeve 2d and the screw nodes 11 of the two bars. In this way, by separating the blotting socket 6b and the inner lock nut 7b, when the inner lock nut 7b is fastened, the crushing socket 6b does not rotate together, so that the frictional resistance does not occur, so that the fastening is easy.

20 to 22 are a perspective view and a cross-sectional view according to an eighth embodiment of the present invention.

According to the drawings, the basic structure of the eighth embodiment of the present invention is the same as the seventh embodiment of the present invention and only some components are added, and the basic structure of the semi-circular sleeve 2e is the seventh embodiment of the present invention. The same as the semi-circular sleeve 2d of the example, and is formed by adding an outer multi-sided surface 22d, which is a multi-stage alternately with a gentle inclined surface and a horizontal surface, and protruding engagement projections 25 protruding at both edge portions in the axial direction. And two coupling groove portion 25a of the groove is added to each of the two pairs of semi-circular sleeves (2e) so as not to cross each other in the axial direction by the concave-convex coupling.

The structure of the inner lock nut 7b is the same as the inner lock nut 7b of the seventh embodiment of the present invention, and the basic structure of the blotting socket 6c is the same as that of the blotting socket 6b of the seventh embodiment of the present invention. It is the same feature that only the inner surface of the multi-stage 63 is formed by alternating the inclined surface and the horizontal surface alternately so as to correspond to the outer multi-sided surface 22d of the semi-circular sleeve 2e.

The coupling method and the effect of the eighth embodiment of the present invention are the same as the seventh embodiment of the present invention, except that the outer multi-sided surface 22d of the semi-circular sleeve 2e and the inner multi-sided surface 63 of the blotting socket 6c are provided. Since the inclined surface and the horizontal surface are alternately formed in the axial direction, the inclined surface is reduced by the horizontal surface than the entire surface is in contact with the tapered surface than the entire surface is in contact with one tapered surface as in the seventh embodiment of the present invention. It is possible to move with a small force and to achieve the same holding force.

23 to 25 are a perspective view and a cross-sectional view according to a ninth embodiment of the present invention.

According to the drawings, the basic structure of the ninth embodiment of the present invention is a combination of the components of the sixth and seventh embodiments of the present invention, a pair of semi-circular sleeve (2d) and the holding paper (6b) The structure of is the same as that of the semicircular sleeve 2d and the blotting socket 6b of the seventh embodiment of the present invention, and the structures of the inner lock nut 7a and the outer lock nut 8 are the inner locks of the sixth embodiment of the present invention. It is characterized by the same as the nut 7a and the outer lock nut 8, and the holding paper socket 6b and the inner lock nut 7a and the outer lock nut 8 are integrated by a pair of semicircular sleeves 2d. First, the outer lock nut (8) is fastened to the inner lock nut (7a) and the elastic ring (20c) is seated on the inner ring ring (57a) of the inner lock nut (7a) and inserted into the holding paper socket (6b). Then, the two ends of the semi-circular sleeve (2d) is coupled to the coupling bolt (9) to the tab hole 64 of the holding socket (6b) Do not.

The coupling method and the effect of the ninth embodiment of the present invention are as follows.

First, the entire semicircular sleeve 2d integrated into one reinforcing bar 1 is fastened, and the other semi-circular sleeve 2d fastened to one reinforcing bar 1 to the other bar 1a to be connected. Rotate to reverse the other one of the reinforcing bars (1a), and then fully tighten the inner lock nut (7a) that is fastened to the two bars (1, 1a) at both ends of the semi-circular sleeve (2d) two bars (1) , 1a) is pulled in both ends and then the pair of outer lock nuts 8 are completely tightened, the holding paper 6b is no longer centered by the resistance of the outer tapered surface 22 of the semi-circular sleeve 2d. After reaching the limit point that cannot move in a straight line, the outer lock nut 8 and the inner lock nut 7a screwed back are retracted in both directions. At this time, the reinforcement is reinforced to the female thread part 51 of the inner lock nut 7a. When the screw node 11 of (1, 1a) is in a fastened state While both the Figure two reinforcement (1, 1a) pushed to the both ends of the direction to remove the fine clearance between the female screw portion 21 and the two reinforcement of the screw bar 11 of the semi-circular sleeve (2d). As described above, the fine female threaded portion 81 and the fine male threaded portion 71 of the outer lock nut 8 and the inner lock nut 7a have a shorter pitch than the threaded portion 11 of the reinforcing bar, resulting in a smaller inclination angle. It is possible to tighten more strongly with a smaller force than to fasten one lock nut with the same female threaded portion that is screwed with the node 11.

26 is a perspective view according to a tenth embodiment of the present invention.

According to the drawings, the basic structure of the tenth embodiment of the present invention is the same as the first embodiment of the present invention, and only some components are added, and the structure of the lock nut 5 is the first embodiment of the present invention. The lock nut 5 is the same as the example, and the knitted sleeve 3 has a cylindrical sleeve divided into three sections in the transverse direction, and is formed as three knitted bodies, and the inner surface of each knitted body has a screw node of the reinforcing bars 1 and 1a. A female thread part 31 of the same position to be fastened is formed, and the threaded part of the female thread part 31 is completely engaged with the threaded part 11 of the threaded bar reinforcing bars 1 and 1a to be connected so that there is no gap therebetween. An improved portion 34 having chamfered edges at both ends of the inner surface in the axial direction is formed to allow reinforcing bars to be smoothly introduced, and an expansion spring 20 having a coil spring shape is seated at an axial center of the female thread portion 31. Extension springs (2 Spring seating grooves 33 are formed with grooves that are as deep as the thickness of 0), and the outer surface of the knitted sleeve 3 is a tapered surface whose diameter decreases from the center in the axial direction toward both ends thereof. The tapered male threaded portion 32a is formed on the outer tapered surface 32 with the tapered female threaded portion 52a of the lock nut 5 being formed. By having three pieces, when connecting the reinforcing bar with a large diameter, the steel bar is squeezed in three directions to form a close coupling with the bar.

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

First, the expansion spring 20 is seated in the spring seating grooves 33 of the three sleeved sleeves 3, and a pair of lock nuts 5 are loosely fastened to both ends of the three sleeved sleeves 3, respectively. By fastening the entire knitted sleeve 3 integrated into one reinforcing bar 1, and then the other reinforcing flat sleeve 3 which is fastened to the other reinforcing bar 1a and fastened to one reinforcing bar 1 in advance. Rotate to reverse the other end of the rebar (1a) by screwing to the other end, then the pair of lock nuts (5) fastened to the two reinforcing bars (1, 1a) at both ends of the knitted sleeve (3) As a result, the socket part 54 of the lock nut 5 strongly presses the three piece-shaped sleeves 3 so that the threaded portions 11 of the female threaded parts 31 and the reinforcing bars 1 and 1a of the piece-shaped sleeve 3 can be pressed. ) Is combined with irregularities without play, the two reinforcing bars (1, 1a) are integrally constrained and connected, and at the same time two iron by the nut part 53 FIG remove fine clearance between (1, 1a) by the traction in the direction across the piece body sleeve (3) and two reinforcement (1, 1a).

27 to 29 are a perspective view and a cross-sectional view according to an eleventh embodiment of the present invention.

According to the figure, it is composed of one cylindrical sleeve (4b) and a pair of lock nuts (5c) and an elastic o-ring (20c) made of an elastic body that integrally combines the two parts, screw-bar reinforcement (1, 1a) The screw fastening method is characterized by simple and solid connection.

The cylindrical sleeve 4b is in the form of a cylinder, the inner surface of which is formed a female threaded portion 41 of the same pitch and specification that is fastened to the threaded joints of the reinforcing bars 1 and 1a, and is provided with a step on both ends in the axial direction. The inner coupling jaw 42 is formed with an inner groove of a circular groove having a larger inner diameter than the screw bone of the portion 41, and the inner o-ring groove portion into which the circular elastic o-ring 20c made of an elastic body is fitted on the inner surface of the inner coupling jaw 42. A 42a is formed and an inner surface edge of the end of the inner coupling jaw 42 is chamfered so that an improvement portion 46 is formed so that the inner coupling jaw 57 of the lock nut 5c to be described below is easily introduced. A polygon 45 having a polygonal cross section is formed at the center of the axial direction of the outer surface so as to be fastened with a tool such as a spanner, and a grout injection hole 44 is formed at the center of the axial direction.

The lock nut 5c is in the form of a nut, and the inner surface of the lock nut 5c has a female thread part 51 having the same pitch and the same size so that the threaded nodes 11 of the reinforcing bars 1 and 1a are fastened, and have one end in the axial direction. An inner oval groove 42a of the inner coupling jaw 42 of the cylindrical sleeve 4b is formed when the inner coupling jaw 57 is formed on the outer surface of the cylindrical sleeve 4b when the inner coupling jaw 57 is formed to have a step in the axial direction and the outer diameter thereof becomes smaller. Improved part 56 is formed with an inner o-ring groove 57a formed of circular grooves in a matching position so that an elastic circular o-ring 20c having elasticity is fitted, and an inner surface edge of the opposite side of the inner coupling jaw 57 is chamfered. ) Is formed so that the rebar is smoothly drawn in to be screwed in and the outer surface is formed into a polygonal cross section so that it can be tightened with a tool such as a spanner.

In addition, the coincidence mark 59 is displayed on the outer surface of the lock nut 5c, and the coincidence mark 40 is displayed on the outer surface of both ends of the cylindrical sleeve 4 in the axial direction. The threads of 41 and 51 are connected so that they can be matched in the same position as one female thread.

The elastic o-ring 20c is fitted into the inner o-ring groove 42a of the cylindrical sleeve 4b and the inner o-ring groove 57a of the lock nut 5c in the form of a circular band made of an elastic body, and is an eleventh embodiment of the present invention. The three essential functions of forming the first, which is tightly coupled by the elastic restoring force, the cylindrical sleeve (4b) and the lock nut (5c) is united in one piece, and secondly, the cylindrical sleeve ( 4b) and the lock nut 5c are combined to form a single part and screwed to the reinforcing bars 1 and 1a while the cylindrical sleeve 4b and the lock nut 5c are combined together and rotated together. After the screw is fastened to the rebars 1 and 1a and the pair of lock nuts 5b is fastened with a tool, only the lock nuts 5b can be rotated. Sleeve (4b) and Locker The (5c) act to prevent the release from each other.

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

First, the inner coupling jaw 57 of the pair of lock nuts 5c is inserted into the inner coupling jaw 42 at both ends of the cylindrical sleeve 4b, and the coupling marks 59 and 40 are matched to each other. The whole of the integral cylindrical sleeve 4b is pre-fastened to one reinforcing bar 1, and then the other one of the reinforcing bars 1a is faced and the cylindrical sleeve 4b pre-fastened to one of the reinforcing bars 1 is rotated again. After screwing into one reinforcing bar 1a, the two locks 1 and 1a are pulled in both ends directions by fully tightening the lock nut 5c with a tool, and between the cylindrical sleeve 4 and the two reinforcing bars 1 and 1a. The gap between the inner surface of the cylindrical sleeve 4b and the reinforcing bars 1 and 1a is removed by filling the grout inlet and filling the grout inlet.

In this way, the pair of lock nuts 5c are integrally coupled to the cylindrical sleeve 4b by the elastic restoring force of the elastic O-ring 20c, thereby simplifying the management of the parts and making one piece of screw connecting the rebars. It can be connected by only one, which makes the work simple and fast, reducing the construction cost.

30 to 32 are a perspective view and a cross-sectional view according to a twelfth embodiment of the present invention.

According to the drawings, the basic structure of the twelfth embodiment of the present invention is the same as that of the eleventh embodiment of the present invention, and only some components are different, and the axial direction of one end of the lock nut 5b in the axial direction is different. Another feature is that the inner coupling jaw 57 is formed to reduce the outer diameter with a step, and the fall prevention jaw 57c is formed at the end of the inner coupling jaw 57 slightly larger, the shaft of the cylindrical sleeve (4a) The inner coupling jaw 42 having a circular groove is formed with an inner diameter larger than the screw valley of the female screw portion 41 while having a step at both ends in the direction, and penetrates the inner coupling jaw 42 to the inside, and has a female threaded tap hole. (42c) is formed to couple the lock nut (5b) to the cylindrical sleeve (4a) and then tighten the coupling bolt (9a) to the tab hole (42c) to prevent falling out, the elasticity of the eleventh embodiment of the present invention Do the same as the O-ring 20c Having a circular elastic ring 20b having elasticity, it is preliminarily settled on the inner surface of the inner coupling jaw 42 of the cylindrical sleeve 4a, and the lock nut 5b is coupled to the cylindrical sleeve 4a by the coupling bolt ( By the elastic restoring force of the 9a) and the elastic ring 20b, the sleeve 4a and the lock nut 5b are bound together in one state, and the light force is the same as that of the elastic o-ring 20c of the eleventh embodiment of the present invention. The cylindrical sleeve 4a and the lock nut 5b rotate together with each other during screwing to the rebars 1 and 1a by preventing rotation, and after the screwing is completed to the two bars 1 and 1a, a pair of lock nuts ( When 5b) is fastened with a tool, only the lock nut 5b is rotated alone.

The coupling method and the effect of the twelfth embodiment of the present invention are as follows.

First, the coincidence marks 40 and 59 are coincident with each other by inserting the inner engaging jaws 57 of the pair of lock nuts 5b into the inner engaging jaws 42 at both ends of the cylindrical sleeve 4a. The coupling bolt 9a to the tab hole 42c of the lock nut, but the tip of the locking bolt 5b of the lock nut 5b does not come into close contact with the inner engaging jaw 57 of the lock nut 5b. Is combined to prevent jamming, and then the entirety of the integral cylindrical sleeve 4a is pre-fastened to one reinforcing bar 1, and then the other rebar 1a is abutted and the cylindrical sleeve pre-fastened to one reinforcing bar 1 ( 4a) is rotated in reverse to the other reinforcing bar 1a, and then the lock nuts 5b respectively screwed to the two bars 1 and 1a at both ends of the cylindrical sleeve 4a with a tool are completely fastened. By pulling the two rebars 1, 1a in both ends, the cylindrical sleeve 4a and the two rebars 1, 1a The clearance is removed and the grout inlet is filled with grout material to remove voids between the inner surface of the cylindrical sleeve 4 and the reinforcing bars 1 and 1a.

In this way, the cylindrical sleeve 4a and the pair of lock nuts 5b are integrally coupled and integrated by the elastic restoring force of the coupling bolt 9a and the elastic ring 20b, so that parts are easily managed and the rebar is screwed. In connection, only one part can be connected and connected, so the work is simple and fast, which reduces the construction cost.

33 to 35 are a perspective view and a cross-sectional view according to a thirteenth embodiment of the present invention.

According to the drawings, the basic structure of the thirteenth embodiment of the present invention is the same as that of the eleventh embodiment of the present invention, and only some components are different, and the structure of the lock nut 5c is the same as that of the eleventh embodiment of the present invention. Same as the lock nut 5c, the tab having a female thread while penetrating therein to a position corresponding to the inner o-ring groove portion 57a of the lock nut 5c of the inner coupling jaw 42 of the cylindrical sleeve 4c. A hole 42c is added to insert an almost spherical elastic body 20e therein, and then tighten the coupling bolt 9a to finely adjust the tightening to couple the cylindrical sleeve 4c to the lock nut 5c. Characterized in that it can adjust the tightening force of the state, the coupling method and the effect is the same as the eleventh embodiment of the present invention.

36 to 38 are a perspective view and a cross-sectional view according to a fourteenth embodiment of the present invention.

According to the drawings, the basic structure of the fourteenth embodiment of the present invention is the same as that of the eleventh embodiment of the present invention, and only some components are different, and the outer surface of the end portion of the inner coupling jaw 57 of the lock nut 5d is different. A fine male screw portion 57b is formed, and a fine female screw portion 42b having the same pitch as the fine male screw portion 57b of the lock nut 5d is formed on the inner surface of the end of the inner coupling jaw 42 of the cylindrical sleeve 4d. And a circular elastic ring 20b made of an elastic body is installed on the inner surface of the inner coupling jaw 42 of the cylindrical sleeve 4d, and then a pair of lock nuts 5d are formed at both ends of the cylindrical sleeve 4d. When coupled by screw fastening is another feature that can be rotated while being integrally coupled by the elastic restoring force of the elastic ring (20b), the coupling method and the effect is the same as the eleventh embodiment of the present invention.

39 to 41 are a perspective view and a cross-sectional view according to a fifteenth embodiment of the present invention.

According to the figure, the structure of the cylindrical sleeve 4d and the lock nut 5d of the fifteenth embodiment of the present invention is the same as that of the fourteenth embodiment of the present invention, and is elastic to perform the same action as the elastic ring 20b. Another feature is that the wave washer (20d) having a seated on the inner engaging jaw (57) of the lock nut (5d), and then screwed to the inner engaging jaw (42) of the cylindrical sleeve (4d), Coupling method and effect is the same as the fifteenth embodiment of the present invention.

42 to 44 are a perspective view and a cross-sectional view according to a sixteenth embodiment of the present invention.

According to the drawings, the basic structure of the sixteenth embodiment of the present invention is the same as that of the eleventh embodiment of the present invention, and only some components are different, and the outer diameter of the cylindrical sleeve 4e is stepped on both ends and is small. The outer coupling jaw 43 is formed, and the outer o-ring groove portion 43a is formed as a circular groove in which the elastic o-ring 20c is fitted, and the lock nut 5e has one end in the axial direction. An outer engaging jaw 58 having a stepped inner diameter is formed to have a step, and an inner diameter thereof is formed to fit to an outer surface of the outer engaging jaw 43 of the cylindrical sleeve 4e, and an inner surface of the outer engaging jaw 58. The outer o-ring groove portion 58a is formed at the position facing the outer o-ring groove portion 43a of the cylindrical sleeve 4e when fully inserted into the cylindrical sleeve 4e, and the outer o-ring groove portion 58a is fitted. Improvements with Chamfered Inside Edges (56) Another feature is that the elastic o-ring 20c is smoothly inserted into the cylindrical sleeve 4e fitted to the outer coupling jaw 43, and the cylindrical sleeve 4e and the lock nut are formed by the elastic restoring force of the elastic o-ring 20c. (5e) is combined.

Coupling method and effect of the sixteenth embodiment of the present invention is the same as the eleventh embodiment of the present invention.

45 to 47 are a perspective view and a cross-sectional view according to a seventeenth embodiment of the present invention.

According to the drawings, the basic structure of the seventeenth embodiment of the present invention is the same as the eleventh embodiment of the present invention, and only some components are different, and the structure of the cylindrical sleeve 4b is the same as that of the eleventh embodiment of the present invention. Same as the cylindrical sleeve 4b, only the lock nut is separated into an inner part and an outer part so that the inner part is an inner lock nut 7c and a male screw part 71 is formed on the outer surface and the middle of the outer surface of the inner coupling jaw 57. An inner o-ring groove 57a formed of a circular groove is formed in the circular elastic o-ring 20c, and an external component is formed with an external screw nut 8a on the inner surface of the female screw portion 81 to form the inner lock nut. Another feature is the fastening to the male screw portion 71 of 7c to be integrated.

In addition, the matching mark 72 is displayed on the outer surface of the inner lock nut 7c, and the matching marks 27 are displayed on both ends of the outer side of the cylindrical sleeve 4b in the axial direction. The threads of (41, 51) continue to be connected to each other so that they are matched in position to become one female threaded portion.

The coupling method and the effect of the seventeenth embodiment of the present invention are as follows.

First, the outer lock nut 8a is fastened to the inner lock nut 7c, and the elastic o-ring 20c is seated on the inner o-ring groove 57a of the inner lock nut 7c to be coupled to both ends of the cylindrical sleeve 4b. After integrating, the entire cylindrical sleeve 4b integrated into one reinforcing bar 1 is fastened, and the integral cylindrical sleeve fastened to one reinforcing bar 1 against the other bar 1a to be connected. Rotate (4b) counterclockwise to fasten the other reinforcing bars (1a), and then completely tighten the internal lock nuts (7c) that are fastened to the threaded bars of the bars at both ends of the cylindrical sleeve (4b) so that the two bars are in both directions. When the outer lock nut 8a is tightened, the inner lock nut 7c retreats in both ends. At this time, the screws of the reinforcing bars 1 and 1a are screwed into the female threaded part 51 of the inner lock nut 7c. Since the bar 11 is in a fastened state, both the bars 1 and 1a are also The inner surface of the cylindrical sleeve 4b is removed by filling the grout material in the grout inlet 44 by removing the minute play between the female threaded portion 41 of the cylindrical sleeve 4b and the threaded portions 11 of the two bars while pushing in both directions. And remove the gap between the reinforcing bars (1, 1a). As described above, the female thread portion 81 and the male thread portion 71 of the outer lock nut 8a and the inner lock nut 7c have a smaller pitch than the threaded node 11 of the rebar, so that the inclination angle of the thread is smaller, so that the female thread portion is formed on the inner surface. Tighter with a smaller force than with a single locknut and prevents easy loosening.

48 to 50 are a perspective view and a cross-sectional view according to an eighteenth embodiment of the present invention.

According to the drawings, the basic structure of the eighteenth embodiment of the present invention is the same as the eleventh embodiment of the present invention, and some components are different to connect two reinforcing bars (1, 1b) of different diameter, cylindrical sleeve The basic structure of (4f) is the same as the cylindrical sleeve (4d) of the fourteenth embodiment of the present invention, except that the inner lock nuts (7d, 7e) are formed in the form of two diameters different in diameter on both sides in the axial direction Another feature is that the fine female screw portion 42b to which the fine male screw portion 57b is screwed is added.

In the structure of the inner lock nut 7e coupled to the large diameter portion of the cylindrical sleeve 4f, the fine male screw portion 57b is added to the outer end surface of the inner lock nut 7c of the seventeenth embodiment of the present invention. The outer lock nut 8a is formed and has the same structure as the outer lock nut 8a of the seventeenth embodiment of the present invention, and has a structure of the inner lock nut 7d that is coupled to a small diameter of the cylindrical sleeve 4f. Is the same as the inner lock nut 7e, except that the diameter is small and the structure of the outer lock nut 8b is also the same as the outer lock nut 8a, except that the diameter is small.

 Coupling method and effect of the eighteenth embodiment of the present invention is as follows.

First, the outer lock nuts 8a and 8b are screwed to the inner lock nuts 7e and 7d, and the elastic ring 20b is seated on the bottom of the inner coupling jaw 42 of the cylindrical sleeve 4f and integrated. The two inner lock nuts 7e and 7d and the outer lock nuts 8a and 8b are fastened to both ends of the cylindrical sleeve 4f, respectively, and are coupled to each other, and then the cylindrical sleeve 4f integrated into one large diameter reinforcing bar 1. ), The small diameter reinforcing bar 1b is fastened to the integrated cylindrical sleeve 4f, and the inner lock nuts 7e, which are screwed to the two bars 1 and 1b at both ends of the cylindrical sleeve 4f, respectively. 7d) is completely tightened and the two rebars 1 and 1b are pulled in both ends, and then the outer lock nuts 8a and 8b are tightened so that the inner lock nuts 7e and 7d retreat in both directions. The two bar rebars are in the state where the screw nodes 11 of the rebars 1 and 1b are fastened to the female thread part 51 of the 7e and 7d. (1, 1b) is also pushed in both ends, removing the fine play between the female threaded portion 41 of the cylindrical sleeve (4f) and the screw node 11 of the two reinforcing bars (1, 1b) to the grout inlet 44 The grout material is filled to remove voids between the inner surface of the cylindrical sleeve 4f and the bars 1 and 1b. As described above, the female thread portion 81 and the male thread portion 71 of the outer lock nuts 8a and 8b and the inner lock nuts 7e and 7d have a smaller pitch than the threaded node 11 of the rebar, so that the inclination angle is small. The portion 41 can be tightened more powerfully with a smaller force than to fasten one locknut formed and prevents easy loosening.

51 to 53 are a perspective view and a cross-sectional view according to a nineteenth embodiment of the present invention.

According to the drawings, the basic structure of the nineteenth embodiment of the present invention is the same as the eleventh embodiment of the present invention, only some of the components are different, the middle portion of the inner coupling jaw (57) of the lock nut (5c) An inner o-ring groove portion 57a formed of a circular groove is formed so that both ends of the elastic coupling spring 9n are fitted to this portion, and the coupling spring 9n is inserted into both ends of the cylindrical sleeve 4s. Another feature is that the coupling spring seating groove (42d) made of a through hole is formed.

The coupling spring 9n has an arc-shaped spring shape, the inner diameter of which is the same as the outer diameter of the cylindrical sleeve 4s, and both ends thereof are formed in a ring shape, and the middle spring is bent in a small arc shape to form a coupling spring seating groove of the cylindrical sleeve 4s. It is formed to be wider when it is seated on the 42d and to increase elasticity. The lock nut 5c is introduced into the cylindrical sleeve 4s, and then both ends of the coupling spring seating groove 42d of the cylindrical sleeve 4s are inserted. The cylindrical portion is inserted into the inner o-ring groove 57a of the lock nut 5c while the ring portion penetrates to couple the cylindrical sleeve 4s and the lock nut 5c to each other, and at the same time, the cylindrical sleeve integrated by the elastic restoring force of the coupling spring 9n 4s) and the lock nut (5c) is another feature that is additionally provided to be fastened to the reinforcing bar while rotating together.

Coupling method and effect of the 19th embodiment of the present invention are as follows.

First, the lock nut 5c is inserted into both ends of the cylindrical sleeve 4s, and the coupling spring 9n is inserted and fixed in the coupling spring seating groove 42d of the sleeve 4s, and then the entire integrated cylindrical sleeve 4s is fixed. Pre-fastened to one reinforcing bar (1), and then the other rebar (1a), and then screwed to the other rebar (1a) by rotating the cylindrical sleeve (4s) pre-fastened to one rebar (1) Next, the lock nut 5c is completely tightened with a tool to pull the two reinforcing bars 1 and 1a in both ends to remove the play between the cylindrical sleeve 4s and the two reinforcing bars 1 and 1a and grout inlet 44. The grout material is filled to remove voids between the inner surface of the cylindrical sleeve 4s and the bars 1 and 1a.

54 and 56 are a perspective view and a cross-sectional view according to a twentieth embodiment of the present invention.

According to the drawings, the basic structure of the twentieth embodiment of the present invention is the same as that of the eleventh embodiment of the present invention, and only some components are different, and the circular shape is formed on the outer surface of the inner coupling jaw 57 of the lock nut 5c. An inner o-ring groove 57a is formed as a recess of the coupling pin 9p, and the coupling pin seating groove 42e penetrates inside so that the coupling pin 9p is fitted to both ends of the cylindrical sleeve 4t. It is another feature that is formed. The coupling pin 9p is formed of an elastic body in the form of a rod. The lock nut 5c is inserted into the cylindrical sleeve 4t, and then the coupling pin 9p into the coupling pin seating groove 42e of the cylindrical sleeve 4t. The cylindrical sleeve 4t and the lock nut 5c are coupled to each other, and at the same time, the cylindrical sleeve 4t and the lock nut 5c integrated by the elastic restoring force of the coupling pin 9p are fastened to the reinforcing bars together with the rotation. It is another feature provided further.

Coupling method and effect of the 20th embodiment of the present invention is as follows.

First, the lock nut 5c is inserted into both ends of the cylindrical sleeve 4t, and the coupling pin 9p is fixed to the coupling pin seating groove 42e of the sleeve 4t to fix the sleeve 4t and the lock nut 5c. After the coincidence marks 40 and 59 are matched, the entire integral cylindrical sleeve 4t is pre-fastened to one reinforcing bar 1, and then the other reinforcing bar 1a is opposed to one of the reinforcing bars 1 in advance. Rotate the fastened cylindrical sleeve 4t to the other one of the rebars 1a, and then tighten the lock nut 5c with a tool to pull the two rebars 1 and 1a in both directions. The clearance between 4t and the two rebars 1 and 1a is removed and the grout inlet 44 is filled with grout material to remove voids between the inner surface of the cylindrical sleeve 4t and the bars 1 and 1a.

57 to 59 are a perspective view and a cross-sectional view according to a twenty-first embodiment of the present invention.

According to the drawings, the basic structure of the twenty-first embodiment of the present invention is the same as the eleventh embodiment of the present invention, only some of the components are different, the coupling consisting of a circular groove on one end of the outer surface of the lock nut (5f) An elastic ring seating groove 57d is formed so that the bead of the coupling elastic ring 9q is fitted, and a coupling elastic ring seating groove 42f formed of circular grooves is formed on both outer surfaces of the cylindrical sleeve 4u to form an elastic ring ( Another feature is that the beads of 9q) are fitted.

The elastic ring (9q) is in the form of a circular band, both ends of the axial direction relative to the plurality of incisions to give elasticity to act like a spring and the incisions on both sides are formed in two rows of beads protruding in the direction of the center Another feature is that the coupling elastic ring seating groove 57d of the lock nut 5f and the coupling elastic ring seating groove 42f of the sleeve 4u are additionally provided to join the two parts. As follows.

First, the bead of the coupling elastic ring 9q is inserted into the coupling elastic ring seating groove 42f at both ends of the cylindrical sleeve 4u, and the lock nut 5f is inserted into the coupling elastic ring seating groove 57d. (9q) by inserting and fixing the beads and matching the mark (40, 59) of the sleeve (4u) and the lock nut (5f), then the whole of the integrated cylindrical sleeve (4u) in advance in one reinforcing bar (1) After tightening, the other one of the rebars 1a is joined together, the cylindrical sleeve 4u pre-fastened to one of the rebars 1 is reversed, and the other one of the rebars 1a is also screwed to the lock nut 5f. ) By pulling the two rebars 1 and 1a in both ends to remove the play between the cylindrical sleeve 4u and the two rebars 1 and 1a and filling the grout inlet 44 with the grout material. Remove the voids between the inner surface of 4u and the reinforcing bars 1 and 1a.

60 to 62 are a perspective view and a cross-sectional view according to a twenty-second embodiment of the present invention.

According to the drawings, the basic structure of the twenty-second embodiment of the present invention is the same as that of the eleventh embodiment of the present invention, and only some components are different, and the female screw portion 51 is formed on the inner surface of one end of the lock nut 5g. A circular groove having an inner diameter larger than that of the screw bone is formed, and a coupling elastic ring seating groove 57e formed of a circular groove is formed at the bottom thereof, and an inner diameter larger than the internal thread portion 41 is formed on both inner surfaces of the cylindrical sleeve 4v. A groove is formed, and a coupling elastic ring seating groove (42g) formed of a circular groove is formed on the bottom, and a round band is formed on both ends of the axial direction based on the central portion in the axial direction to give elasticity to act like a spring and to The incision is formed in two rows of beads projecting in the circumferential direction and is fitted into the coupling elastic ring seating groove 57e of the lock nut 5g and the coupling elastic ring seating groove 42g of the sleeve 4v to join the two parts.Another feature is that the bonding elastic ring 9r is further provided.

In order to couple the lock nut 5g to the sleeve 4v, the bead of the coupling elastic ring 9r is inserted into the coupling elastic ring seating groove 42g at both ends of the sleeve 4v, and the lock nut 5g is engaged. ) And insert the beads of the coupling elastic ring (9r) into the coupling elastic ring seating groove (57e) and then match the matching marks (40, 59) of the sleeve (4v) and the lock nut (5g).

The coupling method and the effect of the twenty-second embodiment of the present invention are the same as the eleventh embodiment of the present invention.

63 to 65 are a perspective view and a cross-sectional view according to a twenty third embodiment of the present invention.

According to the drawings, the basic structure of the twenty-third embodiment of the present invention is the same as that of the eleventh embodiment of the present invention, and only some of the components are different, and the coupling consists of a circular groove on one end of the outer surface of the lock nut 5h. Ring seating grooves 57f are formed, and coupling ring seating grooves 42h are formed on outer surfaces of both ends of the cylindrical sleeve 4w, and coupling ring seating grooves 57f and 42h of the lock nut 5h and the sleeve 4w. The elastic o-ring (9s) consisting of a circular elastic body fitted into each of the) and a circular band form a bead protruding in the circumferential direction is formed in two rows, the coupling ring seating groove (57f) of the lock nut (5h) on the inner surface of the bead and Another feature is that the elastic ring (9s) is fitted to the coupling ring seating groove (42h) of the sleeve (4w) is further provided with a coupling ring (9t) for coupling the two parts.

The locking nut 5h is coupled to both ends of the sleeve 4w by first inserting the elastic o-ring 9s into the coupling ring seating grooves 42h and 57f of the sleeve 4w and the lock nut 5h, respectively. When the coupling ring 9t is coupled to both ends of the sleeve 4w, and then the lock nut 5h is inserted, the elastic o-ring 9s is fitted into the bead of the coupling ring 9t, and the sleeve 4w and the lock nut 5h are inserted. Are integrally combined.

Coupling method and effect of the twenty-third embodiment of the present invention is the same as the eleventh embodiment of the present invention.

66 to 68 are a perspective view and a cross-sectional view according to a twenty-fourth embodiment of the present invention.

According to the drawings, the basic structure of the twenty-fourth embodiment of the present invention is the same as the eleventh embodiment of the present invention, and only some components are different, and the circular groove is formed at one end of the outer surface of the lock nut 5i. A coupling elastic ring seating groove 57g is formed, and a coupling elastic ring seating groove 42i formed of circular grooves is formed on both outer surfaces of the cylindrical sleeve 4x, and is formed of an elastic body in the form of a circular band and has both ends in the axial direction. The projection is bent vertically in the direction of the center of gravity to fit into the engaging elastic ring seating groove (57g) of the lock nut (5i) and the engaging elastic ring seating groove (42i) of the sleeve (4x) to couple the two parts integrally. Another feature is that the coupling ring 9u made of an elastic body is further provided.

In order to couple the lock nut 5i to the sleeve 4x, first insert the coupling rings 9u at both ends of the sleeve 4x and insert the lock nut 5i into the coupling elastic ring seating groove 57g. The protrusion of the coupling ring 9u is fitted to engage the cylindrical sleeve 4x and the lock nut 5i.

Coupling method and effect of the twenty-fourth embodiment of the present invention is the same as the eleventh embodiment of the present invention.

69 to 71 are a perspective view and a cross-sectional view according to a twenty-fifth embodiment of the present invention.

According to the drawings, the basic structure of the twenty-fifth embodiment of the present invention is the same as that of the eleventh embodiment of the present invention, and only some components are different, and the female screw portion 41 is provided with steps on both ends of the cylindrical sleeve 4. An inner coupling jaw 42 having a circular groove is formed with an inner diameter greater than that of the screw bone, and the inner edge of the end is chamfered so that an improvement portion 46 is formed, and thus the inner coupling jaw 57 of the lock nut 5b described later. ) Is formed to be easily drawn in.

The lock nut 5b has an inner engaging jaw 57 having a stepped in the axial direction on the outer surface of one end in the axial direction and smaller in outer diameter, and has an inner engaging jaw 42 of the cylindrical sleeve 4 formed at an end thereof. The fall prevention jaw 57c is formed to have an outer diameter slightly larger to fit the inner surface so that the cylindrical sleeve 4 and the lock nut 5b are combined to be integrated into a single part, thereby screwing the reinforcing bars 1 and 1a. While the cylindrical sleeve 4 and the lock nut 5b are combined together in one rotation, screwing is completed on the two rebars 1 and 1a, and then a pair of lock nuts 5b is fastened with a tool. Only 5b should be rotated.

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

First, the inner coupling jaw 57 of the pair of lock nuts 5b is inserted into the inner coupling jaw 42 at both ends of the cylindrical sleeve 4 to be interfitted, and the matching marks 59 and 40 are coincident with each other. Next, the entire integral cylindrical sleeve 4 is pre-fastened to one reinforcing bar 1, and then the other one rebar 1a is opposed, and the cylindrical sleeve 4 pre-fastened to one reinforcing bar 1 is reversed. Screw the other bar 1a, and then tighten the lock nut 5b with a tool to pull the two bars 1 and 1a in both directions to pull the cylindrical sleeve 4 and the two bars 1 and 1a. The gap between the gaps) is removed and the grout inlet is filled with grout material to remove voids between the inner surface of the cylindrical sleeve 4 and the reinforcing bars 1 and 1a.

In this way, the pair of lock nuts 5b are integrally coupled to the cylindrical sleeve 4 by integrating them into one piece, thereby simplifying the management of parts and connecting the rebar with only one part. Simple and fast speed reduces construction costs.

72 to 74 are a perspective view and a cross-sectional view according to a twenty-sixth embodiment of the present invention.

According to the figure, the basic structure of the twenty-sixth embodiment of the present invention is the same as that of the eleventh embodiment of the present invention, and is composed of a cylindrical sleeve 4g and an intermediate stopper 9b.

The cylindrical sleeve 4g has a cylindrical shape, and an inner surface of the cylindrical sleeve 4g is formed with a female thread part 41 of the same pitch and size that is screwed with the threaded node 11 of the reinforcing bars 1 and 1a. The chamfered improvement part 46 is formed so that the reinforcing bars 1 and 1a can be easily drawn in and fastened, and the polygon 45 having a polygonal cross section so as to be fastened to a central portion in the axial direction of the outer surface can be fastened with a tool such as a spanner. Is formed, and the grout injection hole 44 which is a hole penetrated inside is formed in the center of the axial direction.

The intermediate stopper 9b has a male thread portion 91 which is the same as the threaded portion 11 of the reinforcing bar on the outer surface in the form of a short boltless wrench bolt, and both sides in the axial direction are the hemispherical portion 94 in the form of a convex lens. Wrench grooves 95 are formed on one side of which the wrench is fitted.

Coupling method and the effect according to the configuration of the twenty sixth embodiment of the present invention is as follows.

First, the intermediate stopper 9b is fastened to reach the center of the inner portion of the cylindrical sleeve 4g, and one side of the cylindrical sleeve 4g is fastened to one reinforcing bar 1, and the other one of the reinforcing bars 1a is cylindrical. (4g) is fastened to the other side, but the tip of the reinforcing bar contacts only the apex of the hemispherical part 94 of the intermediate stopper 9b to fasten the reinforcing bars 1 and 1a, and the frictional resistance becomes small. Since the fastening of the reinforcing bars 1 and 1a is stopped by the resistance of the stopper 9b and the rebars 1 and 1a are pushed in both directions, the same action as the fastening of the lock nut to both ends occurs. Remove the fine play between the female threaded portion 21 and the screw node 11 of the two reinforcing bars (1, 1a) and fill the grout inlet 44 in the grout inlet 44 to reinforce the inner surface and the reinforcing bars (1, 1a) of the cylindrical sleeve (4g) Remove the gap between). As such, the twentieth embodiment of the present invention eliminates the clearance of the reinforcing bars 1 and 1a fastened to the cylindrical sleeve 4g without separately tightening the locknut, thereby reducing the number of parts and making the connection work easier.

75 to 76 are a perspective view and a cross-sectional view according to a twenty-seventh embodiment of the present invention.

According to the drawings, the structure of the twenty-seventh embodiment of the present invention is the same as that of the twenty-sixth embodiment of the present invention, and the basic structure of the cylindrical sleeve 4h is the same as the cylindrical sleeve 4g of the twenty-sixth embodiment of the present invention However, another feature is that a circular groove is additionally formed in the center direction by being connected to the improvement parts 46 at both ends of the cylindrical sleeve 4h, so that the initial retracting of the reinforcing bars is easier, and the outer surface of the intermediate stopper 9c is provided. Another feature is that the horizontal O-ring groove 93 is formed without the external thread and the elastic o-ring 9d is inserted therein to prevent the elastic o-ring 9d from being inserted by the elastic restoring force after being inserted into the cylindrical sleeve 4h. The method and the effect are the same as in the 26th embodiment of the present invention.

77 to 79 are a perspective view and a cross-sectional view according to a twenty-eighth embodiment of the present invention.

The structure of the twenty-eighth embodiment of the present invention is the same as the basic structure of the eleventh embodiment of the present invention, and additionally provided with a connecting bolt (9e) to be applied when the two bars to be connected can not be rotated It is characterized by connecting two pre-fastened cylindrical two sleeves 4i and 4j.

According to the figure, one end of the cylindrical sleeves 4i and 4j has the same structure as the end of the cylindrical sleeve 4b of the eighteenth embodiment of the present invention and is coupled to one side of the cylindrical sleeves 4i and 4j. 7c and the outer lock nut 8a and the elastic o-ring 20c have the same structure as the inner lock nut 7c and the outer lock nut 8a and the elastic o-ring 20c of the seventeenth embodiment of the present invention. On the other side, a female female thread 47 having a female thread is formed on the inner side, and a connection bolt 9e of a stud bolt shape is screwed in. The female female thread 47 of one cylindrical sleeve 4i is a right screw and the other is screwed. The joint female thread 47 of one cylindrical sleeve 4j is formed with a left hand thread and the axial center of the connecting bolt 9e connecting the two cylindrical sleeves 4i and 4j can be tightened with a tool such as a spanner. A corner 92 is formed and the two sides 92 are formed on both sides of the corner 92. The threaded part 91 is formed, one side of which is formed of a right screw and the other side of which is formed of a left buckle, so that only the connecting bolt 9e can be screwed and connected without rotating the cylindrical sleeves 4i and 4j to which the rebar is fastened. do.

Coupling method and effect of the 28th embodiment of the present invention are as follows.

Fasten the outer lock nut (8a) to the inner lock nut (7c), seat the elastic O-ring (20c) and fasten the outer lock nut (8a) to each one of the two cylindrical sleeves (4i, 4j) and then First, one reinforcing bar 1 is fastened to one integrated cylindrical sleeve 4i and the inner lock nut 7c is completely tightened, and then the outer lock nut 8a is tightened to reinforce the bar 1 and the cylindrical sleeve 4i. Remove the play between the two to fully engage, fasten the other reinforcing bar (1a) to the other integral cylindrical sleeve (4j) and fully tighten the inner lock nut (7c) and then the outer lock nut (8a) Tighten and remove the play between the reinforcing bar 1a and the cylindrical sleeve 4j, and then fully engage. Then, when the connecting bolt 9e is screwed while rotating to the right, the two cylindrical sleeves 4i and 4j are pulled and connected at the same time. .

80 to 82 are a perspective view and a cross-sectional view according to a twenty-ninth embodiment of the present invention.

The structure of the twenty-ninth embodiment of the present invention is the same as that of the eleventh embodiment of the present invention, and at least one of the two reinforcing bars (1, 1a) to be connected can be applied when rotation is possible and distance adjustment is not required. It is characterized in that the connecting bolt (9f) is further provided so as to connect the two cylindrical sleeve (4k) pre-fastened rebar.

According to the figure, one end of the cylindrical sleeve 4k has the same structure as that of the end of the cylindrical sleeve 4b of the eleventh embodiment of the present invention, and the lock nut 5c and the elastic member are coupled to one end of the cylindrical sleeve 4k. The structure of the o-ring 20c is also the same as that of the lock nut 5c and the elastic o-ring 20c of the eleventh embodiment of the present invention, and the other end of the o-ring 20c is formed with a female thread 47 having a female thread on the inner side thereof. Another feature is that the short connection bolt (9f) of the stud bolt type is formed is formed on the outer surface of the male screw portion 91 is fastened.

Coupling method and effect of the 29th embodiment of the present invention are as follows.

The elastic o-ring 20c is inserted into the lock nut 5c, and each end is joined to one end of the sleeve 4k. First, one reinforcing bar 1 is fastened to one cylindrical sleeve 4k and the lock nut 5c. ) To fully engage by removing the play between the reinforcing bar 1 and the cylindrical sleeve 4k, fastening the other bar 1a to the other cylindrical sleeve 4k and tightening the lock nut 5c. Fully engaged with the clearance between the rebar 1a and the cylindrical sleeve 4k, the fastening bolt 9f is fastened to one cylindrical sleeve 4k, and then the other cylindrical sleeve to which the rebar 1a is coupled. (4k) to the connecting bolt (9f).

83 to 85 are a perspective view and a cross-sectional view according to a thirtieth embodiment of the present invention.

The structure of the thirtieth embodiment of the present invention has the same basic structure as that of the eleventh embodiment of the present invention, and at least one of the two reinforcing bars to be connected is rotatable and applicable when the distance between the tips of the two reinforcing bars is required. As a connecting bolt (9g) and a pair of joint locknut (9h) and cylindrical to remove the play between the cylindrical sleeve (4m) and the connecting bolt (9g) connecting the two cylindrical sleeve (4m) fastened to the rebar Another feature is that the stopper 9i is further provided to remove the play between the sleeve 4m and the reinforcing bars 1 and 1a.

The cylindrical sleeve 4m has a female thread portion 41 of the same pitch and size to which the screw nodes 11 of the reinforcing bars 1 and 1a connected to the inner surface are fastened, and is formed about half of the axial length, and is joined to the remaining inner surface. The sub female thread 47 is formed to fasten the long connecting bolt 9g in the form of a stud bolt. Both cylindrical sleeves 4m are formed with the right screw, and the outer surface of the connecting bolt 9g connecting the two cylindrical sleeves 4m. The male thread part 91 which consists of a right screw in the whole is formed. When the stopper 9i of the short boltless bolt type having the same function as the lock nut is fastened to the inside of the joint female thread 47 of the cylindrical sleeve 4m, and the reinforcing bars 1 and 1a are fastened, the tip is in close contact. Reinforcing bars (1, 1a) is pushed to both ends while the clearance between the reinforcing bars (1, 1a) and the cylindrical sleeve (4m) is firmly coupled.

Coupling method and effect of the thirtieth embodiment of the present invention are as follows.

First, the stopper 9i is fastened to the joint female threads 47 of the two cylindrical sleeves 4m, and the joint lock nuts 9h are fastened to both ends of the connecting bolt 9g, respectively. Fasten to one cylindrical sleeve (4m), fasten the other reinforcing bar (1a) to the other cylindrical sleeve (4m), and then connect the connecting bolt (9g) with a cylindrical sleeve with one bar (1) 4m), and the cylindrical sleeve (4m) to which the other reinforcing bar (1a) is coupled to the connecting bolt (9g) to fully tighten the joint lock nut (9h), the cylindrical sleeve (4m) and connecting bolt The clearance between (9g) is removed.

86 to 88 are a perspective view and a sectional view according to a thirty-first embodiment of the present invention.

The structure of the thirty-first embodiment of the present invention has the same basic structure as that of the eleventh embodiment of the present invention, and the end of the rebar vertically in the conventional manner by fastening to the distal end of the reinforcement fixed to the center of the column reinforcement. The present invention relates to a fixing steel that has the same function as a bent fixing wire, and is characterized in that the lock nut (5c) is coupled to the plate nut (4n) and fastened to the end of the reinforcing bar.

According to the drawing, the plate nut 4n has a structure of a flange nut, in which a connection nut 49b is integrally formed on a circular plate 49, and an end portion of the connection nut 49b that is fastened to the lock nut 5c. Is the same as the end of the cylindrical sleeve 4b of the eleventh embodiment of the present invention, the inner surface is axially penetrated to form a female threaded portion 41 to which the screw node 11 of the rebar is fastened, the outer surface is the same as the spanner The cross section is formed in a polygonal shape so as to be fastened with a tool, and the lock nut 5c has the same structure as the lock nut 5c of the eleventh embodiment of the present invention.

The coupling method and the effect of the thirty-first embodiment of the present invention are as follows.

The lock nut 5c with the elastic o-ring 20c fitted to the inner o-ring groove 57a of the plate nut 4n is integrated to integrate the plate nut 4n and the lock nut 5c, and the integrated plate nut 4n. ) Is fastened to the end of the reinforcing bar (1) and the lock nut (5c) is completely fastened to remove the play with the reinforcing bar (1) to combine firmly.

89 to 91 are a perspective view and a cross-sectional view according to a thirty-second embodiment of the present invention.

According to the drawings, the structure of the thirty-second embodiment of the present invention is the same as the basic structure fastened to the reinforcing bar with the eleventh embodiment of the present invention, and its use is the same as that of the thirty-first embodiment of the present invention, and the plate nut 4p Is the same as the thirty-first embodiment of the present invention, except that the inside of the plate 49a is blocked, and the inner lock nut 7c and the outer lock nut 8a and the elastic o-ring 20c are made of the present invention. The inner lock nut 7c, the outer lock nut 8a and the elastic o-ring 20c of the seventeenth embodiment are the same.

Coupling method and effect of the thirty-second embodiment of the present invention are as follows.

Tighten the plate lock nut by fastening the external lock nut 8a to the inner lock nut 7c and the elastic o ring 20c into the inner o-ring groove portion 57a of the inner lock nut 7c. (4p), and then to the end of the reinforcing bar (1), and fully tighten the inner lock nut (7c) to pull the reinforcing bar (1), and then fully tighten the outer lock nut (8a) plate nuts (4p) While the play between the reinforcement (1) is removed and firmly coupled.

92 to 94 are a perspective view and a cross-sectional view according to a thirty-third embodiment of the present invention.

According to the drawings, the structure of the thirty-third embodiment of the present invention is the same as the basic structure fastened to the reinforcing bar with the eleventh embodiment of the present invention, the lock nut (5c) is coupled to one end of the welding sleeve (4q) H Another feature is that it is attached to the beam 9j by welding.

The basic structure of the welding sleeve (4q) is the same as the cylindrical sleeve (4t) of the twentieth embodiment of the present invention, the inner surface is axially penetrated female thread portion 41 is fastened to the screw node 11 of the rebar It is formed, the structure of the end that is fastened to the lock nut (5c) is the same as the end of the cylindrical sleeve (4t) of the twentieth embodiment of the present invention and the corners of the opposite end is chamfered to improve the weld 48 to form a weld The lock nut 5c has the same structure as the lock nut 5c of the twentieth embodiment of the present invention.

The coupling method and the effect of the thirty-third embodiment of the present invention are as follows.

First, the lock nut 5c is introduced into the welding sleeve 4q, and the coupling pin 9p is inserted into the coupling pin seating groove 42e of the welding sleeve 4q to be integrally coupled and welded to the H beam 9j. Next, the reinforcing bar 1 is completely screwed into the welding sleeve 4q, but the end portion is tightened until it is in close contact with the H beam 9j, and the lock nut 5c fastened to the reinforcing bar 1 is welded to the welding sleeve ( When the rebar (1) is completely tightened to 4q), the clearance between the welding sleeve (4q) and the rebar (1) is eliminated and is firmly connected.The welding is easier than welding the rebar directly to the H beam (9j). The weld is hardened.

95 to 97 are perspective views and cross-sectional views according to a thirty-fourth embodiment of the present invention.

According to the drawings, the structure of the thirty-fourth embodiment of the present invention is the same as the basic structure fastened to the reinforcing bar with the eleventh embodiment of the present invention, reinforced concrete construction is carried out step by step to the reinforcement to formwork for the construction of the next process Regarding the fixing sleeve 4r for fixing, the connecting sleeve 4r has a plate 9k coupled to one end thereof and the other end thereof is the same as the end of the cylindrical sleeve 4b of the seventeenth embodiment of the present invention. 7c and the outer lock nut 8a and the elastic o-ring 20c also have the same structure as the inner lock nut 7c and the outer lock nut 8a and the elastic o-ring 20c of the seventeenth embodiment of the present invention.

The plate 9k has a central hole 96 formed in a diameter at which the connecting sleeve 4r is fitted and coupled to a central portion thereof, and a nail hole 97 is formed to fix and fix nails at four corners. In the central through hole 96 of the plate 9k, a bolt-shaped protective cap 9m for preventing inflow of mortar or foreign matter is further provided and fastened.

Coupling method and effect of the thirty-fourth embodiment of the present invention are as follows.

Fasten the outer lock nut (8a) to the inner lock nut (7c), seat the elastic o-ring (20c) in the inner o-ring groove portion (57a) of the inner lock nut (7c), insert into the connecting sleeve (4r), The integrated connecting sleeve 4r is screwed to the reinforcing bar 1, and the inner lock nut 7c which is screwed to the reinforcing bar 1 at one end of the connecting sleeve 4r is completely fastened to the reinforcing bar 1 and The connection sleeve 4r is firmly connected with no play, and then closely attached to the formwork, thereby nailing the nail hole 97 of the plate 9k or fastening the screw.

98 to 100 are perspective views and cross-sectional views according to a thirty-fifth embodiment of the present invention.

According to the drawings, the two sleeves (100, 100a) and the two sleeves (100, 100a) are provided with a reinforcing connector consisting of a coupling socket (200) fastening the two sleeves (100, 100a) by integrally constrained, ) Is integrated by screwing the two rebars (1, 1a), respectively, and then connecting the two rebars (1, 1a) by combining the two sleeves (100, 100a) with a coupling socket (200).

One sleeve 100 has a cylindrical shape is formed with a female thread portion 101 of the same in which the screw node 11 of the rebar is fastened to the inner surface, the other sleeve 100a is a cylindrical shape screw thread of the rebar on the inner surface A female portion 101 of the same angle to which the 11 is fastened is formed, and a polygonal portion 104 having a polygonal cross section is formed so as to be fastened with a tool on one end of the outer surface, and a male screw on the outer surface connected to the polygonal portion 104. A micro male screw portion 103 is formed, and the coupling socket 200 is screwed with the other sleeve 100a while surrounding the one sleeve 100, and an inner surface of one end portion is in a circular center direction. End engaging jaw 201 is formed to protrude into the engagement with one end surface of the one sleeve 100 and a fine female screw portion 203 is formed on the inner surface is the fine male screw portion of the other sleeve (100a) 103) is screwed.

Looking at the fastening method and the principle of operation according to the configuration of the thirty-fifth embodiment of the present invention, the coupling socket 200 is previously fitted to one reinforcing bar (1a), one sleeve (100) in one reinforcing bar (1a) To fasten but the front end of the reinforcing bar (1a) is fastened so as to protrude beyond the end of the sleeve 100, the other reinforcing bar 1 is also fastened so that the front end protrudes more than the end of the sleeve (100a), then rebar (1a) When the coupling socket 200 pre-inserted into the other sleeve 100a is fastened to the other sleeve 100a, the end faces of the two rebars face each other, and a gap is generated between the two sleeves 100 and 100a, so that the two sleeves as the coupling socket 200 is tightened. By moving (100, 100a) in the opposite center direction of the two rebars (1, 1a), there is a difference between the threaded section (11) of the two rebars (1, 1a) and the female threaded portion (101) of the two sleeves (100, 100a). The voids are removed to effect the same action as locking the locknuts across the sleeve.

Rebar joint method as the 35th embodiment of the present invention as described above is a joint method that can be connected to each other prefabricated reinforcing bar network reinforcement with screw bar reinforcement, each of the reinforcing bar reinforced with the reinforcing bar is fixed without being rotated The connection is possible when the reinforcing bars are not moved in the axial direction. When the rebars are connected to each other, the starting points of the screw nodes 11 are different from each other when the bars are connected to each other. Possible reinforcement method.

101 to 103 are a perspective view and a sectional view according to a 36th embodiment of the present invention.

According to the drawings, the structure of the thirty sixth embodiment of the present invention is the same as that of the thirty-fifth embodiment of the present invention, and only two sleeves 100b and 100c and a coupling socket 200a and two sleeves 100b to which components are added. Is inserted into the distal end of the inside of the 100c to control the insertion limit of the reinforcing bars (1, 1a) and is provided with a projection type stopper 300 and groove type stopper 400 to remove the play, such as lock nuts Is another feature.

The one sleeve (100b) is formed on the inner surface of the inner threaded portion (101) is fastened to the screw node 11 of the reinforcing bar is formed and the inner engaging jaw 105 protruding in the direction of the center in one end surface of the inner surface is formed And engaging with the engaging jaw 301 of the projection type stopper 300, which will be described later, the outer surface has a step in the center of the axial direction and the inner engaging jaw 105, the direction of the outer engaging jaw 105 is formed in a large diameter and the opposite direction is small A 106 is formed and engaged with the intermediate catching jaw 202 of the coupling socket 200a which will be described later.

The other sleeve 100c has an internal female portion 101 of the same angle to which the screw node 11 of the reinforcing bar is fastened to an inner surface thereof, and an inner locking jaw 105 protruding in the center direction from one end surface of the inner surface thereof is formed. It is formed and engaged with the engaging jaw 401 of the recessed stopper 400 to be described later, the outer surface is formed with a fine male threaded portion 103 is screwed with the fine female threaded portion 203 of the coupling socket 200a to be described later.

The engaging socket 200a has an end catching jaw 201 having one end protruding in the direction of the center of gravity and is engaged with one end face of the sleeve 100b and has a step on the inner surface thereof, and an intermediate catching jaw 202 having an increased inner diameter. A micro female screw portion which is formed and extends to a large inner diameter of the intermediate catching jaw 202 and is connected to the micro male screw portion 103 of the sleeve 100c from an intermediate portion in the axial direction to a tip portion thereof in parallel with the parallel surface; 203 is formed.

The protruding stopper 300 has a short round bar shape and the outer surface has a locking jaw 301 that engages with the inner locking jaw 105 of the sleeve 100b, and the outer diameter is formed in different stages, but the surface having a large outer diameter has a sleeve. The outer diameter is slightly smaller than the thread of the female thread portion 101 of 100b, and the tapered protrusion 302 protruding in the axial direction in contact with the tip of the reinforcing bar and tapered in the other side is formed later. The tapered groove groove 402 of the groove stopper 400 is easily inserted while being guided.

The groove-shaped stopper 400 has a short round bar shape and the outer surface has a locking jaw 301 that engages with the inner locking jaw 105 of the sleeve 100c, and the outer diameter is formed in different stages, but has a large outer diameter. The outer diameter is slightly smaller than the thread of the female thread portion 101 of the sleeve 100c, and the tapered groove portion 402 is formed in one axial direction in contact with the tip of the reinforcing bar 1 and the other side is formed in a tapered groove. Is formed to guide the tapered protrusion 302 of the projection stopper 300 to be easily inserted.

Looking at the fastening method and the operating principle according to the configuration of the thirty sixth embodiment of the present invention as follows.

After inserting the engaging socket (200a) into the reinforcing bar (1a) in advance, and inserting the projection type stopper 300 in the inside of one sleeve (100b), the tapered projection 302 is inserted into the head to the tapered projection (302) When protruding from the tip of the sleeve 100b and then completely screwing the sleeve 100b to the rebar 1a, the tip of the rebar is stopped by the resistance of the protruding stopper 300 and the screw of the rebar 1 is stopped. The play between the node 11 and the female threaded portion 101 of the sleeve 100b is removed.

Similarly, insert the recessed stopper 400 in the other sleeve 100c, but insert the tapered recess 402 at the head so that the tapered recess 402 slightly protrudes from the end of the sleeve 100c, and then rebar ( When the sleeve 100c is completely screwed into 1), the tip of the rebar is stopped by the resistance of the recessed stopper 400, and the screw node 11 of the rebar 1a and the female thread part of the sleeve 100b ( The play between 101 is removed.

Then, the two reinforcing bars (1a, 1) united with the two sleeves (100b, 100c) but the tapered projection 302 of the projection stopper 300 of the tapered groove 402 of the grooved stopper 400 It is easily guided and guided. Then, when the coupling socket 200a is wrapped around one sleeve 100b and screwed onto the other sleeve 100c and completely tightened, the gap between the tip portions of the two sleeves 100b and 100c is spaced. Because of this, when the play is removed, the two reinforcing bars 1 and 1a are firmly connected.

Since the joint of the joint of the rebar of the 36th embodiment of the present invention is already assembled with a reinforcing bar network, the connection is performed when the individual rebars are not moved even in the axial direction without rotation for screw fastening. Make it possible.

104 and 105 are a perspective view and a cross-sectional view according to a thirty-seventh embodiment of the present invention.

According to the figure, the structure of the thirty-seventh embodiment of the present invention is the same as that of the thirty-fifth embodiment of the present invention, and only two sleeves 100d and 100e and a coupling socket 200b and two sleeves 100d to which components are added are , 100e) is inserted into the tip of the inside to control the insertion limit of the reinforcing bar and the projection type stopper (300a) and the groove type stopper (400a) to act to remove the play, such as locknut is another feature.

The one sleeve (100d) is formed on the inner surface of the protrusion female stopper (300a) which will be described later to form a female thread portion 101 of the same angle is fastened to the inner threaded portion (11) of the rebar It is screwed with the male screw part 303.

The other sleeve 100e has a recessed female stopper 101 formed on the inner surface of which a threaded portion 11 of the reinforcing bar is fastened, and an inner female threaded portion 105a formed on one side of the inner surface. Screw threaded to the external thread portion 403 of (400a), the outer surface is formed with a fine male threaded portion 103 is screwed with the fine female threaded portion 203 of the coupling socket (200b) to be described later.

The coupling socket 200b is formed with an end catching jaw 201 in which one end thereof protrudes in the direction of the center, and engages with the end surface of the sleeve 100d, and the inner threaded portion 103 of the sleeve 100e with the fine male thread 103 of the sleeve 100e. The fine female screw portion 203 is formed to be screwed.

The protruding stopper (300a) is a boltless wrench bolt form the outer surface of the male screw portion 303 is screwed to the internal female thread portion (105a) of the sleeve (100d) and one side in the axial direction of the reinforcing bar (1a) A tapered protrusion 302 protruding in a tapered shape is formed in contact with the front end and is guided by a tapered recess 402 of the recessed stopper 400a to be described later.

The recessed stopper 400a has a flat headless bolt shape, the outer surface of which has a male thread portion 403, which is screwed to the inner female thread portion 105a of the sleeve 100e, and one side of the grooved stopper in the axial direction of the rebar 1. A tapered groove portion 402 formed of a tapered groove is formed in contact with the front end portion, and the tapered protrusion portion 302 of the protrusion stopper 300a is inserted therein.

Looking at the fastening method and the principle of action according to the configuration of the thirty-seventh embodiment of the present invention as follows.

The coupling socket 200b is pre-inserted into the rebar 1a, and then the protrusion type stopper 300a is fastened to the internal female thread portion 105a of one sleeve 100d, but the opposite side of the tapered protrusion 302 is fastened first. When the tapered protrusion 302 protrudes from the front end of the sleeve 100d, and then fully screws the sleeve 100d onto the rebar 1a, the front end of the bar 1a is formed by the resistance of the protruding stopper 300a. As the fastening is stopped, the play between the screw segment 11 of the rebar 1a and the female thread portion 101 of the sleeve 100d is removed.

Likewise, fasten the groove-shaped stopper 400a to the other sleeve 100e, but fasten the opposite side of the tapered groove groove 402 first, and then completely screw the sleeve 100e to the rebar 1 when the rebar (1). The stop of the tip is stopped by the resistance of the groove-type stopper 400a, and the play between the screw node 11 of the reinforcing bar 1 and the female thread 101 of the sleeve 100e is removed.

Then, the two reinforcing bars (1a, 1) united with the two sleeves (100d, 100e) but the tapered projection 302 of the projection stopper 300 of the tapered groove portion 402 of the grooved stopper 400 It is easily guided and coupled, and then screwing the coupling socket 200b to one sleeve 100e while completely tightening it to the other sleeve 100e to completely tighten the threaded bar-shaped two bars 1 and 1a. It is connected firmly without play.

Since the reinforcing bar of the 37th embodiment of the present invention is already assembled with a reinforcing bar network, it is possible to connect when the individual bars are not moved in the axial direction without rotation for screwing. do.

In the above embodiment of the present invention, in addition to the female thread formed on the inner surface of the sleeve and the lock nut fastened to the screw node 11 of the reinforcing bar, the cylindrical sleeve, lock nut, blotting socket, inner lock nut, outer lock nut, small formed in the connection bolt The common thread of the pitch can be variously formed by more than one or two rows of screws, and the lock nut or the blotting socket, the inner lock nut, and the outer lock are joined to both ends of the semi-circular sleeve, the cylindrical sleeve, or the flat sleeve. Nuts can be combined with each other as long as they are compatible structures that can be combined with each other, and any number of combinations can be combined. Reinforcing bar connectors consisting of all combinations are included in the scope of the present invention. In other words, the lock nut coupled to both ends of the semi-circular sleeve can be replaced by a compatible structure, and can be combined in various combinations.A combination consisting of the blotting socket and the inner lock nut coupled to both ends of the semi-circular sleeve, and the blotting socket and the inner lock nut. It can be combined in various combinations by replacing with a compatible structure of the combination consisting of and the outer lock nut, and can be combined by combining various combinations by replacing the lock nut coupled to both ends of the cylindrical sleeve, cylindrical sleeve It can be combined in various combinations by substituting a compatible structure among the combination consisting of an inner lock nut and an outer lock nut coupled to both ends of the.

While the present invention has been described with reference to various preferred embodiments, the present invention is not limited to the embodiments as described above, and those skilled in the art to which the present invention pertains within the technical scope of the present invention. Various modifications can be made but the technical idea is the same as that of the present invention.

As described above, according to the threaded sleeve for the joint of the threaded bar reinforcement according to the present invention, even if the female threaded portion of the semi-circular sleeve exactly matches the threaded node of the reinforcing bar, there is no void after joining, screwing is possible. Loosen the socket-type locknuts on both ends of the pair of semi-circular sleeves and screw them into the rebar. When the locknuts are completely tightened, the socket part of the locknut strongly presses the pair of sleeves to firmly reinforce the rebar. At the same time, the nut part of the lock nut pulls both rebars to remove both fine clearances between the female threaded part of the sleeve and the threaded bar of the reinforcing bar, thus eliminating the need for filling grout material inside the sleeve. Fast, and the joints are stronger.

And according to the threaded sleeve for the joint of the threaded bar reinforcement according to the present invention, by integrating the cylindrical sleeve and the lock nut with elastic restoring force by the elastic O-ring made of an elastic body, and treating it as a single part, the fall of small parts such as the lock nut It prevents safety accidents due to accidents and makes it easy and quick to connect rebars with only one part.

In addition, according to the threaded sleeve for the joint of the threaded bar reinforcement according to the present invention, even when the starting point of the screw nodes of the two bars that are opposed to each other when connecting the pre-assembled reinforcing bar network can be connected.

Claims (60)

In a threaded sleeve for connecting threaded reinforcing bars, a pair of semicircular sleeves and a pair of semicircular sleeves are formed on the inner surface of which a female thread portion 21 is formed to which the threaded nodes 11 of the bars 1 and 1a are fastened. Threaded sleeve for the joint of the threaded bar reinforcement, characterized in that it comprises a coupling means for constraining. The nut part 53 according to claim 1, wherein the coupling means for restraining the pair of semi-circular sleeves has a nut shape and an internal thread part 51 having a threaded part 11 of the bars 1 and 1a fastened to the inner surface thereof. Threaded sleeve for the joint of the screw node reinforcement, characterized in that the socket portion 54 made of a socket shape is composed of a pair of lock nuts connected in the axial direction. The outer surface of the semicircular sleeve 2 is formed with an outer taper surface 22 made of a taper whose outer diameter decreases from the center in the axial direction toward both ends, and the inner surface of the socket portion 54 of the lock nut is formed. Threaded sleeve for the joint of the threaded bar reinforcement, characterized in that the inner tapered surface 52 is formed of a tapered taper from the inner surface of the nut portion 53 to the inner diameter is gradually increased toward the end while the inner diameter is increased. 4. The tapered female thread portion 52a of claim 3, wherein the tapered female thread portion 52a is flush with the threaded portion 11 of the reinforcing bars 1 and 1a connected to the inner tapered surface 52 of the socket portion 54 of the lock nut 5. Threaded sleeve for the joint of threaded bar reinforcement, characterized in that it is formed. The method according to claim 3, wherein a spring seating groove (23) is formed in the axial center of the female screw portion (21) of the semicircular sleeve (2a) to seat the expansion spring (20) in the form of a coil spring and to the outer tapered surface (22). A tapered male threaded portion 22a is formed to be screwed to the tapered female threaded portion 52a of the lock nut 5, and the tapered male threaded portion of the semicircular sleeve 2a is formed on the inner tapered surface 52 of the locknut 5a. A threaded sleeve for a joint of a threaded reinforcing bar, characterized in that a female threaded protrusion (52b) is engaged with the 22a). 5. The method according to claim 4, wherein the elastic member seating grooves 24 are formed at both end surfaces in the transverse direction of the semi-circular sleeve 2b so that the elastic member 20a is inserted and the taper of the lock nut 5 is formed on the outer tapered surface 22. Threaded sleeve for the joint of the screw node reinforcement, characterized in that the male screw projection (22b) of the same relationship to the female threaded portion (52a) is formed. 5. The method according to claim 4, wherein a spring seating groove (23) is formed in the central portion of the semi-circular sleeve (2a) in the axial direction of the female thread portion (21a), so that the expansion spring (20) in the form of a coil spring is seated, A threaded sleeve for the joint of reinforcing threaded joints, characterized in that a tapered male threaded portion (22a) of equal width is screwed to the tapered female threaded portion (52a) of the lock nut (5). The outer surface of the nut part 53 of the lock nut is formed in a polygonal cross section and is formed in an axial direction according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7. An improved portion 56 is formed by chamfering the inner edge of the end portion, and the outer surface of the socket portion 54 is formed with a plurality of slotted spline grooves 55 long in the axial direction, and the outer surface of the semicircular sleeve and the outer surface of the lock nut. Match marks (27, 59) in the axial direction, and the female thread portion 21 of the semi-circular sleeve is equal to the female thread so as to be completely engaged with the screw node (11) of the reinforcing bars (1, 1a) to be unevenly coupled without gaps Threaded sleeve for the joint of the screw node reinforcement, characterized in that formed by. In the threaded sleeve connecting the threaded bar reinforcement, A female thread portion 21 is formed on the inner surface to which the screw nodes 11 of the reinforcing bars 1 and 1a are fastened, and an outer tapered surface 22 formed of a taper on the outer surface of which the outer diameter decreases toward both ends from the center in the axial direction is formed. A pair of semicircular sleeves; And An inner lock nut on which an internal thread portion 51 is formed on which an internal thread part 11 of the reinforcing bars 1 and 1a is fastened; And A holding socket having an inner tapered surface 52 having a larger diameter toward an end portion thereof on an inner surface thereof; Threaded sleeve for the joint of the screw node reinforcement, characterized in that consisting of. 10. The male screw projection portion (22b) is formed on the outer tapered surface (22) of the semi-circular sleeve (2b), and the fine male screw portion (71) is formed on the outer surface of the inner lock nut (7) with a pitch of ordinary screws. The inner surface of the presser socket 6 is formed with a fine female threaded portion 61 formed of a pitch of a common screw, and is screwed with the fine male threaded portion 71 of the inner lock nut 7, and one side of the outer surface has a cross section. Threaded sleeve for the joint of the threaded bar reinforcement, characterized in that a plurality of grooves are formed in a plurality of grooves splined groove 55 is formed in the axial direction. 10. The method according to claim 9, wherein the spring seating groove 23 is formed in the female threaded portion 21 of the semi-circular sleeve (2d) so that the expansion spring 20 is seated and the bottom surface is axially on both sides of the outer tapered surface (22). Guide grooves 22c having grooves are formed horizontally, and coupling grooves 25a on one side of which are formed as grooves are formed on both end surfaces of the transverse direction, and the other side of which is formed with a projection protrusion 25, An inner o-ring groove 62 is formed at one end of the inner surface to allow the elastic o-ring 20c to be seated, and a tab hole 64 is formed at the center of the axial direction so that the coupling bolt 9 is fastened to the inner lock nut 7b. Threaded sleeve for the joint of the screw bar reinforcement, characterized in that the inner diameter is projected in the axial direction with a stepped to reduce the outer diameter at one end is formed on the protruding outer surface groove (57a). 10. The outer surface of claim 9, wherein a spring seating groove 23 is formed in the female thread portion 21 of the semi-circular sleeve 2e so that the expansion spring 20 is seated and the slope and the horizontal surface are alternately arranged on the outer surface. 22d and the guide groove 22c grooved in the bottom surface horizontally in the axial direction is formed, and the engaging projection portion 25a and the concave groove 25a which are formed in the grooves are formed on both end surfaces in the transverse direction. A pair of semi-circular sleeves 2e are mutually unevenly coupled to each other, and an inner multi-sided surface 63 corresponding to the outer multi-sided surface 22d of the semi-circular sleeve 2e is formed on the inner surface of the blotting socket 6c. An inner o-ring groove 62 is formed at one end to allow the elastic o-ring 20c to be seated, and a tab hole 64 is formed at the center of the axial direction so that the coupling bolt 9 is fastened to one end of the inner lock nut 7b. It protrudes in the axial direction with the step of reducing the outer diameter, and the inner o-ring groove 57a is formed on the protruded outer surface thereof. Threaded sleeve for screw joints of reinforcement bars, characterized in that. In the threaded sleeve connecting the threaded bar reinforcement, An internal thread portion 21 is formed on the inner surface of which the screw nodes 11 of the reinforcing bars 1 and 1a are fastened, and a spring seating groove 23 is formed in the female thread portion 21 so that the expansion spring 20 is seated. A pair of semi-circular sleeves formed on the outer surface with an outer tapered surface 22 formed of a taper whose outer diameter decreases from the center in the axial direction toward both ends; And A female threaded portion 51 is formed on the inner surface to which the screw nodes 11 of the reinforcing bars 1 and 1a are fastened, and an inner O-ring groove portion 57a and the male threaded portion 71 on which the elastic O-ring 20c is seated are connected to the outer surface. Internal lock nuts (7a) formed; And An outer lock nut (8) having an internal thread portion (81) formed on an inner surface thereof and screwed to the inner lock nut (7a); And A holding socket formed with an inner o-ring groove 62 at one end of an inner surface thereof, and having an inner taper surface 52 formed of a taper having an elastic o-ring 20c seated thereon and having a larger diameter toward the end thereof; Threaded sleeve for the joint of the screw node reinforcement, characterized in that consisting of. 15. The screw node of the reinforcing bars 1 and 1a according to claim 13, wherein the male threaded projections 22b are formed on the outer tapered surfaces 22 on both sides of the semicircular sleeve 2c, and are connected to the inner surface of the gripping socket 6a. 11) The same pitch and the same taper female thread part 52a is formed, and the improvement part 65 which is chamfered is formed in the corner of the inner surface in which the inner o-ring groove part 62 was formed, and the groove is long in an axial direction on the outer surface. Threaded sleeve for the joint of the screw node reinforcement, characterized in that a number of spline grooves 55 are formed. 14. A guide groove (22c) is formed in the outer tapered surface (22) of the semi-circular sleeve (2d), the guide groove (22c) of which the bottom surface is horizontal in the axial direction, and one side is formed as the groove on both sides in the transverse direction. The coupling groove 25a is formed and the other side is formed with a protruding coupling protrusion 25, and a tab hole 64 is formed at the center of the axial direction of the holding socket 6b so that the coupling bolt 9 is fastened. Characterized by a threaded sleeve for the joint of rebar bars. The method according to claim 9 or 10 or 11 or 12 or 13 or 13 or 14 or 15, the female threaded portion 21 of the semi-circular sleeve (2b, 2c, 2d, 2e) is connected Improvements formed by female threads of the same angle with the threaded joints 11 of the reinforcing bars, which are completely engaged with the threaded joints 11 of the rebars 1 and 1a, and are connected so as to be unevenly coupled without gaps, and chamfered at the corners of the inner surfaces of both ends in the axial direction. A portion 26 is formed, and an improved portion 56 is chamfered at an inner edge of the inner lock nuts 7, 7a, and 7b, and is axially formed on the outer surface of the holding sockets 6a, 6b, and 6c. A plurality of long grooved spline grooves 55 are formed, and the coincidence mark 27 is displayed on the outer surface of the semicircular sleeves 2b, 2c, 2d, and 2e and coincides with the outer surface of the inner lock nuts 7, 7a, and 7b. Mark 73 is displayed and the joint of the screw node reinforcement, characterized in that the matching mark 66 is displayed on the outer surface of the holding paper (6a, 6b, 6c) A threaded sleeve. In the threaded sleeve connecting the threaded bar reinforcement, The cylindrical sleeve is divided into three parts. The inner surface is formed with the same female thread part 31 to which the screw nodes of the reinforcing bars 1 and 1a are fastened, and the outer surface is tapered to decrease in diameter from the center in the axial direction to both ends. A flat sleeve formed with an outer taper surface 32 formed of; And Socket portion formed with an inner tapered surface 52 consisting of a nut portion 53 formed with the same female thread portion 31 to which the screw nodes of reinforcing bars 1 and 1a are fastened on the inner surface, and a taper whose inner diameter increases toward both ends on the inner surface. A pair of lock nuts, each of which is formed in a form in which 54 is connected in an axial direction; Threaded sleeve for the joint of threaded bar reinforcement, characterized in that consisting of. 18. The female thread part 31 according to claim 17, wherein the female thread part 31 of the knitted sleeve 3 is completely engaged with the threaded part 11 of the threaded bar reinforcing bars 1 and 1a to which the female threaded part 31 is connected, and is unevenly coupled without voids. Spring mounting groove 33 is formed in the center of the axial direction, and the expansion spring 20 is seated, and the same number of taper number that is screwed with the tapered female screw portion 52a of the lock nut 5 on the outer tapered surface 32 A threaded portion 32a is formed, a tapered female threaded portion 52a is formed on the inner surface of the socket portion 54 of the lock nut 5, and a coincidence mark on the outer surface of the knitted sleeve 3 and the lock nut 5 35, 59, characterized in that the threaded sleeve for the joint of the threaded bar reinforcement. In the threaded sleeve connecting the threaded bar reinforcement, A cylindrical sleeve on which an internal thread portion 41 to which screw threads of reinforcing bars 1 and 1a are fastened is formed; And A pair of lock nuts on which an internal thread portion 51 is formed to which screw threads of reinforcing bars 1 and 1a are fastened; And Coupling means for integrally tying the pair of lock nuts to both ends of the cylindrical sleeve in an axial direction; Threaded sleeve for the joint of the screw node reinforcement comprising a. 20. The inner engaging jaw 42 having a circular groove is formed with an inner diameter larger than the screw valley of the female threaded portion 41 while providing steps at both ends in the axial direction of the cylindrical sleeve, and having one end in the axial direction of the lock nut. Threaded sleeve for the joint of the threaded bar reinforcement, characterized in that the inner engaging jaw (57) is formed in the outer outer surface is stepped in the axial direction and the outer diameter is reduced to the inner engaging jaw (42) of the cylindrical sleeve. The inner surface edge of the inner engaging jaw 42 of the cylindrical sleeve 4 is chamfered to form an improved portion 46, and at the end of the inner engaging jaw 57 of the lock nut 5b. An anti-dropping jaw 57c having an outer diameter slightly larger is formed so as to be fitted to the inner surface of the inner engaging jaw 42 of the sleeve 4, and the lock nut 5b is formed into the inner engaging jaw 42 of the cylindrical sleeve 4. Threaded sleeve for the joint of threaded bar reinforcement, characterized in that it is configured to be integrated into the cylindrical sleeve (4) and the lock nut (5b) in one piece. The inner surface of the inner engaging jaw 42 of the cylindrical sleeve 4a is formed by the tab hole 42c formed in the inner engaging jaw 42 of the cylindrical sleeve 4a to fasten the engaging bolt 9a. A circular elastic ring 20b having an elastic restoring force is seated thereon to fix the lock nut 5b, and an anti-dropping jaw 57c is formed at the end of the inner coupling jaw 57 of the lock nut 5b to slightly increase its outer diameter. Threaded sleeve for the joint of threaded bar reinforcement, characterized in that it is configured to be prevented from being pulled out of the cylindrical sleeve (4a) while being caught at the distal end of the coupling bolt (9a). 21. The circular ore ring (20c) is fitted to the outer surface of the inner engaging jaw (57) of the lock nut (5c) so that the circular elastic o-ring (20c) is fitted into the cylindrical sleeve (4b). The inner o-ring groove portion 42a into which the circular elastic o-ring 20c is fitted is formed on the inner surface of the inner coupling jaw 42 of the inner side, and is coupled to the cylindrical sleeve 4b by the elastic restoring force of the elastic o-ring 20c. Threaded sleeve for the joint of the screw node reinforcement, characterized in that the lock nut (5c) is configured to be fixed. 21. The inner ring ring portion (57a) is formed in a circular groove on the outer surface of the inner engaging jaw (57) of the lock nut (5c), and is formed inside the inner engaging jaw (42) of the cylindrical sleeve (4c). And a through-hole tab hole 42c is formed therein to insert an almost spherical elastic body 20e and fasten the coupling bolt 9a to tighten the clamping force of the cylindrical sleeve 4c and the lock nut 5c. Threaded sleeve for seam of threaded bar reinforcement, characterized in that it is configured to be adjustable. 21. The lock according to claim 20, wherein a fine male threaded portion (57b) is formed on the outer surface of the end of the inner engaging jaw (57) of the lock nut (5d) and the inner surface of the end of the inner engaging jaw (42) of the cylindrical sleeve (4d). A fine female threaded portion 42b of the same pitch as the fine male threaded portion 57b of the nut 5d is formed, and a circular elastic ring 20b is provided on the inner surface of the inner coupling jaw 42 of the cylindrical sleeve 4d. When the lock nut 5d is fastened and coupled, the lock nut 5c fastened to the cylindrical sleeve 4d by the elastic restoring force of the elastic ring 20b is fixed. Threaded sleeves. The lock nut (5d) is formed on the outer surface of the end of the inner engaging jaw (57d) of the lock nut (5d) and the lock nut on the inner surface of the end of the inner engaging jaw (42) of the cylindrical sleeve (4d). A fine female threaded portion 42b of the same pitch as the fine male threaded portion 57b of 5d is formed, and the wave washer 20d is fitted to the inner coupling jaw 57 of the lock nut 5d, and a cylindrical sleeve ( When the lock nut 5d is fastened to and coupled to the lock nut 5d, the joint of the screw node reinforcing bar is characterized in that the lock nut 5d fastened to the cylindrical sleeve 4d is fixed by the elastic restoring force of the wave washer 20d. Threaded sleeves. 21. The inner o-ring groove portion 57a is formed on the outer surface of the inner coupling jaw 57 of the lock nut 5c, and the coupling springs 9n are formed at both ends of the cylindrical sleeve 4s. A coupling spring seating groove (42d) to be fitted is formed, and the locking spring (5c) is introduced into both ends of the cylindrical sleeve (4s) with a coupling spring (9n) bent in the form of an arc spring. Threaded sleeve for the joint of the rebar reinforcement, characterized in that it is installed in the coupling spring seating groove (42d) of 4s) to be integrally coupled to the cylindrical sleeve (4s) and the lock nut (5c). The inner o-ring groove portion 57a formed of a circular groove is formed on the outer surface of the inner coupling jaw 57 of the lock nut 5c, and coupling pins 9p are formed at both ends of the cylindrical sleeve 4t. A coupling pin seating groove 42e to be fitted is formed, and the locking pin 5c is introduced into both ends of the cylindrical sleeve 4t with a coupling pin 9p made of a rod-shaped elastic body, and then the cylindrical sleeve 4t. Threaded sleeve for the joint of the screw node reinforcement, characterized in that the coupling pin (9p) is inserted into the coupling pin seating groove (42e) of the) to integrally combine the cylindrical sleeve (4t) and the lock nut (5c). A coupling elastic ring seating groove (57d) is formed on the outer surface of the lock nut (5f), and a circular elastic groove (57d) is formed on both sides of the cylindrical sleeve (4u). (42f) is formed, and both ends of the axial direction in the form of a belt is cut in many ways to give elasticity and the incisions on both sides is provided with an elastic ring (9q) formed of two rows of beads protruding in the direction of the center Screw thread for reinforcing the joints of the screw node, characterized in that it is fitted to the coupling elastic ring seating groove (57d) of the lock nut (5f) and the coupling elastic ring seating groove (42f) of the sleeve (4u) Death sleeve. A groove according to claim 20, wherein a groove is formed in an inner surface of one end of the lock nut (5g), and a coupling elastic ring seating groove (57e) formed of a circular groove is formed in the bottom surface thereof, and grooves are formed on both inner surfaces of the cylindrical sleeve (4v). Is formed and a coupling elastic ring seating groove (42g) formed of a circular groove on the bottom thereof is formed, and both ends are incised with respect to the center of the axial direction in the form of a circular band to impart elasticity and the circumferential direction to the incisions on both sides Beads protruding into the coupling elastic ring (9r) is formed in two lines are inserted into the coupling elastic ring seating groove (57e) of the lock nut (5g) and the coupling elastic ring seating groove (42g) of the sleeve (4v) Threaded sleeve for seam of threaded bar reinforcement, characterized in that it is configured to join parts. 21. The coupling ring seating groove (57f) is formed on the outer surface of the lock nut (5h) is formed of a circular groove, the coupling ring seating grooves (42h) are formed on the outer surface of both ends of the cylindrical sleeve (4w), A coupling ring seating groove of the lock nut (5h) and the sleeve (4w) having an elastic o-ring (9s) made of a circular elastic body and a coupling ring (9t) formed in two rows of beads protruding in the circumferential direction in the form of a circular band. A screw knot characterized in that the elastic o-rings 9s are seated on the 57f and 42h, respectively, and the elastic o-rings 9s are fitted to the beads of the coupling ring 9t to engage the sleeve 4w and the lock nut 5h. Threaded sleeves for reinforcing bars. A coupling elastic ring seating groove (57g) is formed on the outer surface of the lock nut (5i), and a circular elastic groove seating groove (57g) is formed on both sides of the cylindrical sleeve (4x). (42i) is formed, the coupling ring (9u) of the lock nut (5i) is provided with a coupling ring (9u) is formed in the form of a belt, both ends in the axial direction is bent vertically in the direction of the center of the lock nut (5i) and Threaded sleeve for the joint of the screw node reinforcement, characterized in that it is fitted in the coupling elastic ring seating groove (42i) of the sleeve (4x) and configured to couple the two parts integrally. Claims 20 or 21 or 22 or 23 or 23 or 24 or 25 or 26 or 27 or 27 or 28 or 29 or 30 or 30 or 31 or 32 The polygonal section 45 having a polygonal cross section is formed at the center of the axial direction of the outer surface of the cylindrical sleeves 4, 4a, 4b, 4c, 4d, 4s, 4t, 4u, 4v, 4w, 4x. The grout injection hole 44 which is a hole penetrated in the center of the direction is formed, and the coincidence mark 40 is formed at both ends of the outer surface, and the outer surface of the lock nuts 5b, 5c, 5d, 5f, 5g, 5h, 5i. This polygon is formed in the cross-section, the inner portion of the inner coupling jaw 57 is formed with an improved portion 56 is chamfered, and a matching mark 59 is formed on the outer surface of the threaded joint for screw joints sleeve. In the threaded sleeve connecting the threaded bar reinforcement, The inner surface of the cylindrical sleeve is formed with a female threaded portion 41 is fastened to the screw node of the reinforcing bars (1, 1a) and the outer engaging jaw 43 is formed to have a step diameter at both ends in the axial direction of the outer surface is reduced; And A pair of lock nuts having one end in the axial direction and an outer engaging jaw 58 having an increased inner diameter thereon; Threaded sleeve for the joint of threaded bar reinforcement, characterized in that consisting of. 35. The outer o-ring groove portion 43a having a circular groove is formed on the outer surface of the outer engagement jaw 43 of the cylindrical sleeve 4e so that the elastic o-ring 20c is fitted and the outer engagement of the lock nut 5e. An outer o-ring groove 58a is formed on the inner surface of the jaw 58, and an improvement part 56 is formed in which the corners of the inner surface of the outer coupling jaw 58 are chamfered, and a cylindrical shape is formed by the elastic restoring force of the elastic o-ring 20c. The lock nut 5e is integrally fixed to the sleeve 4e, and the matching marks 40 and 59 are displayed on the outer surfaces of the cylindrical sleeve 4e and the lock nut 5e. Threaded sleeve. In the threaded sleeve connecting the threaded bar reinforcement, The inner surface is formed with a female threaded portion 41 which is fastened to the screw nodes of the reinforcing bars 1 and 1a, and has a step at both ends in the axial direction, and an inner coupling jaw having a circular groove with a larger inner diameter than the threaded bone of the female threaded portion 41 ( A cylindrical sleeve 4b having a 42 formed therein and an inner o-ring groove 42a into which a circular elastic o-ring 20c is fitted; And An inner engaging jaw 57 is formed on the outer surface with a step in the axial direction and the outer diameter is reduced, and an external threaded portion 71 is formed on the outer surface thereof, and an inner o-ring groove 57a formed of a circular groove is formed on the outer surface of the end. An inner lock nut 7c into which the elastic o-ring 20c is fitted; And An outer lock nut 8a formed on an inner surface of the outer lock nut 8a to be integrally fastened to the male screw part 71 of the inner lock nut 7c; Threaded sleeve for the joint of threaded bar reinforcement, characterized in that consisting of. In the threaded sleeve connecting the threaded bar reinforcement, The diameter of both sides in the axial direction is different, and the inner surface is formed with a female threaded portion 41 fastened to the threaded portions of the reinforcing bars 1 and 1a, and has a step diameter at both ends in the axial direction and is larger than the screw bone of the female threaded portion 41. A cylindrical sleeve 4f in which an inner coupling jaw 42 is formed in a groove shape so that a circular elastic ring 20b is seated and a fine female screw portion 42b is formed at an end of the inner coupling jaw 42; And An inner engaging jaw 57 is formed on the outer surface with a step in the axial direction and the outer diameter is reduced, and an external thread portion 71 is formed on the outer surface thereof, and is fastened to the micro female threaded portion 42b of the cylindrical sleeve 4f at an end thereof. An internal lock nut (7e) coupled to a large diameter of the cylindrical sleeve (4f) and an internal lock nut (7d) coupled to a small diameter of the cylindrical sleeve (4f) as the fine male screw portion (57b) is formed; And A female screw portion 81 is formed on the inner surface and fastened to the external lock nut 8a and the external thread portion 71 of the internal lock nut 7d which are integrally coupled to the external thread portion 71 of the internal lock nut 7e. External lock nut (8b) to be integrated; Threaded sleeve for the joint of the threaded bar reinforcement, characterized in that for connecting two bars of different diameters (1, 1b) consisting of. 38. The grout inlet according to claim 36 or 37, wherein a polygonal cross section 45 is formed in the axial center of the outer surface of the cylindrical sleeves 4b and 4f in a polygonal cross section and is a hole penetrated inward in the center of the axial direction. (44) is formed, the outer surface of the inner lock nuts (7e, 7d) is formed in the cross-section of the polygon and the improved portion 56 is formed with the chamfered inner surface edge of the inner coupling jaw 57, the cylindrical sleeve (4b) , 4f) and a threaded sleeve for the joint of the screw node reinforcement, characterized in that the mark (40, 73) is displayed on the outer surface of the inner lock nuts (7e, 7d). In the threaded sleeve connecting the threaded bar reinforcement, A cylindrical sleeve having an internal threaded portion 41 fastened to an inner surface of the reinforcing bars 1 and 1a; And An intermediate stopper introduced into an axial middle portion of the inside of the cylindrical sleeve; Threaded sleeve for the joint of threaded bar reinforcement, characterized in that consisting of. 40. The threaded joint (11) of claim 39, wherein the inner surface edges of both ends of the cylindrical sleeve (4g) are chamfered to form an improvement portion (46), and the intermediate stopper (9b) is in the form of a short solid bolt. That is, the same male screw portion 91 is formed, and both sides of the axial direction are formed with a hemispherical portion 94 having a convex lens shape, and a wrench groove 95 for forming a wrench on one side of the hemisphere portion 94 is formed. Characterized by a threaded sleeve for the joint of rebar bars. 40. The method according to claim 39, wherein the inner surface edges of both ends of the cylindrical sleeve 4h are chamfered to form an improvement portion 46, and a circular groove is formed in contact with the improvement portion 46 in the direction of the center so that initial reinforcement of the reinforcing bar is performed. To facilitate easier, both sides of the intermediate stopper (9c) in the axial direction is formed with a convex lens-shaped hemispherical portion 94 is formed with a wrench groove (95) in which the wrench is fitted on one side of the hemispherical portion (94) Circular o-ring groove (93) is formed on the outer surface of the threaded sleeve for the joint of the screw node reinforcement, characterized in that the elastic O-ring (9d) is seated. 42. A polygonal section 45 having a polygonal cross section is formed in an axial center of an outer surface of the cylindrical sleeves 4g, 4h, and penetrating therein. Threaded sleeve for the joint of the screw node reinforcement, characterized in that the grout injection hole 44 is formed. In the threaded sleeve connecting the threaded bar reinforcement, A pair of cylindrical sleeves on which one side of the inner surface is formed with a female threaded portion 41 engaged with the screw node of the reinforcing bars 1 and 1a, and the other side of the inner surface is formed with a female threaded portion 47; And A connection bolt having a stud bolt shape to connect the pair of cylindrical sleeves to be connected; Threaded sleeve for the joint of threaded bar reinforcement, characterized in that consisting of. 45. The female thread 47 of one cylindrical sleeve 4i is formed with a right hand thread and the female thread 47 of the other cylindrical sleeve 4j is formed with a left hand thread. An inner engaging jaw 42 is formed in the shape of a hollow groove having an inner diameter larger than the screw valley of the female threaded portion 41 while having a step at one end in the axial direction of 4j) to form a circular inner o-ring groove 42a on the inner surface thereof. And a circular elastic o-ring 20c is fitted, and a polygonal portion 92 is formed at an axial center of the connecting bolt 9e connecting the two cylindrical sleeves 4i and 4j, and both sides of the polygonal portion 92 are formed. The male screw portion 91 of the one side is formed with the right screw and the other side is formed with the left screw, the inner coupling jaw (57) with the step of reducing the outer diameter in the axial direction on the outer surface of one end of the axial direction in the form of a nut ) Is formed to form a male screw portion 71 on the outer surface, and a circular yaw on the outer surface. The inner o-ring groove 57a is formed so that the inner lock nut 7c into which the elastic o-ring 20c is fitted is added, and is screwed to the male screw portion 71 of the inner lock nut 7c in the form of a nut. An outer lock nut (8a) is formed in the inner surface of the female threaded portion 81 is added to the threaded sleeve for the joint of the screw node reinforcement, characterized in that the configuration. The inner coupling jaw 42 is formed in the form of a groove in which a circular groove of an inner diameter larger than the screw bone of the female thread part 41 is formed while providing a step at one end in the axial direction of the pair of cylindrical sleeves 4k. A circular inner o-ring groove 42a is formed on the inner surface to fit the circular elastic o-ring 20c, and a male screw portion 91 is formed on the outer surface of the connecting bolt 9f connecting the two cylindrical sleeves 4k. , In the form of a nut, an inner engaging jaw 57 is formed on the outer surface of the end portion in the axial direction in the axial direction to reduce the outer diameter, and an inner o-ring groove 57a formed of a circular groove is formed on the outer surface thereof. Threaded sleeve for the joint of the screw node reinforcement, characterized in that the lock nut (5c) is fitted is coupled to the inner coupling jaw 42 of the pair of cylindrical sleeve (4k) is fitted. 45. The connecting bolt (4) according to claim 43, further comprising a stopper (9i) in the form of a short boltless wrench bolt to fasten to the joint female thread (47) of the pair of cylindrical sleeves (4m), and to connect the two cylindrical sleeves (4m). The threaded sleeve for the joint of the screw node reinforcement, characterized in that the male screw portion (91) is formed on the outer surface of the 9g) and configured to add a pair of joint lock nut (9h) formed with the female thread. In the threaded sleeve to be fastened to the threaded bar rebar, Connecting nut (49b) is integrally formed to the circular plate 49, the center of which penetrates in the form of a flange nut, and the inner thread portion (41) through which the inner thread is penetrated in the axial direction is fastened. A plate nut having an inner coupling jaw 42 formed with a circular groove having an inner diameter greater than that of the female threaded portion 41 while having a step at one end in the axial direction; And Threaded sleeve for the joint of the screw node reinforcement, characterized in that consisting of a lock nut is formed on the outer surface of the end portion in the axial direction in the form of a nut in the axial direction and the inner engaging jaw 57 is reduced. 48. The circular o-ring groove portion (57a) formed of a circular groove is formed on the inner surface of the inner coupling jaw (57) of the lock nut (5c) to fit the circular elastic o-ring (20c), and the plate nut (4n). An inner o-ring groove 42a into which the elastic o-ring 20c is fitted is formed on the inner surface of the inner coupling jaw 42 of the inner coupling jaw 42, and the plate nut 4n and the lock nut are formed by the elastic restoring force of the elastic o-ring 20c. Threaded sleeve for seam of threaded reinforcing bar, characterized in that 5c) is configured to be fixed. In the threaded sleeve to be fastened to the threaded bar rebar, Connecting nut 49b is integrally formed to the circular plate 49a in which the center part is blocked in the form of a flange nut, and an internal thread part 41 is formed on the inner surface to which the screw node 11 of the reinforcing bar is fastened. The inner engagement ring 42 having a circular groove is formed with an inner diameter larger than the screw bone of the female threaded portion 41 while having a step at one end thereof, and an inner o-ring groove portion 57a formed with a circular groove is formed on the inner surface thereof so as to have a circular elasticity. A plate nut 4p into which the O-ring 20c is fitted; And An inner coupling jaw 57 having a stepped in the axial direction and having a smaller outer diameter in the form of a nut is formed, and an inner o-ring groove 57a formed of a male screw portion 71 and a circular groove is formed on the outer surface thereof. An inner lock nut 7c into which 20c) is fitted; And An outer lock nut (8a) having a female shape (81) formed on an inner surface as a nut shape and fastened to and integrated with the male screw portion (71) of the inner lock nut (7c); Threaded sleeve for the joint of threaded bar reinforcement, characterized in that consisting of. In the threaded sleeve to be fastened to the threaded bar rebar, As a cylindrical shape, an internal thread portion 41 is formed on the inner surface to which the screw node 11 of the reinforcing bar is fastened, and a coupling pin seating groove 42e penetrates inside at one end thereof, and an outer edge of the other end is chamfered to improve welding. A welding sleeve 4q in which 48 is formed; And In the form of a nut, an inner engaging jaw 57 is formed on the outer surface of one end of the shaft in the axial direction and the outer diameter thereof becomes smaller, and an inner o-ring groove 57a formed of a circular groove is formed on the outer surface thereof. 9p) a lock nut 5c on which it is seated; Threaded sleeve for the joint of threaded bar reinforcement, characterized in that consisting of. In the threaded sleeve to be fastened to the threaded bar rebar, A cylindrical shape is formed in the inner surface of the internal thread portion 41 is fastened to the screw node 11 of the reinforcing bar is formed in a circular groove of the inner diameter larger than the screw bone of the female threaded portion 41 with a step in the axial direction A coupling sleeve 4r having a coupling jaw 42 formed therein and an inner o-ring groove 42a formed on an inner surface thereof, on which an elastic o-ring 20c is seated, and a plate 9k coupled to the other end thereof; And An inner coupling jaw 57 is formed in the form of a long nut with a step in the axial direction and the outer diameter thereof is reduced, and an inner o-ring groove 57a formed of a male screw portion 71 and a circular groove is formed on the outer surface thereof. An inner lock nut 7c into which 20c is fitted; And An outer lock nut (8a) having a female shape (81) formed on an inner surface as a nut shape and fastened to and integrated with the male screw portion (71) of the inner lock nut (7c); Threaded sleeve for the joint of threaded bar reinforcement, characterized in that consisting of. The center hole 96 is formed at the center of the plate 9k, and nail holes 97 are formed to fix and fix the dies at four corners, and the center hole of the plate 9k. 96) is provided with a bolt-shaped protective cap (9m) for preventing the inflow of mortar or foreign matter is provided with a threaded sleeve for the joint of the screw bar reinforcement, characterized in that it is configured to be fastened. 52. The outer surface of the plate nuts 4n, 4p and the connecting sleeve 4r is formed in a polygonal cross section, and the locknuts according to claim 47 or 48 or 49 or 50 or 51. The outer surface of 5c has a cross section formed in a polygonal shape, the outer surface of which the tool of the inner lock nut 7c is fastened is formed in a cross section in a polygonal shape, and the outer surface of the outer lock nut 8a has a cross section in a polygonal shape, and a plate Match marks 40 are displayed on the outer surfaces of the nuts 4n and 4p and the connecting sleeve 4r, and match marks 53 and 79 are displayed on the outer surfaces of the lock nut 5c and the inner lock nut 7c. Characterized by a threaded sleeve for the joint of rebar bars. In the threaded sleeve connecting the threaded bar reinforcement, One sleeve 100 is formed with a female thread portion 101 is fastened to the inner screw thread 11 of the rebar; And Another sleeve (100a) is formed on the inner surface of the female threaded portion 101 is fastened to the screw node 11 of the reinforcing bar and the fine male threaded portion 103 is formed on the outer surface; And The inner surface of one end portion is formed with an end catching jaw 201 protruding in the direction of the center of the circle is engaged with one end surface of the one sleeve 100 and the fine female screw portion 203 is formed on the inner surface of the other sleeve Coupling socket 200 is formed to be screwed with the fine male screw portion 103 of (100a); Threaded sleeve for the joint of the screw node reinforcement, characterized in that consisting of. 55. The method of claim 54, wherein the inner engaging jaw 105 protruding in the center direction on one side end surface of the inner surface of one sleeve (100b) is formed and the outer engaging jaw 106 is formed on the outer surface, the other sleeve An inner locking jaw 105 protruding in the direction of the center of gravity is formed on one end surface of the inner surface of the inner surface 100c, and an intermediate locking jaw 202 is formed in the inner surface of the coupling socket 200a to increase the inner diameter. Engaging with the outer engaging jaw 106 of one sleeve (100b), the engaging projection 301 is formed on the outer surface in the form of a short round bar engaging the engaging jaw 105 of the sleeve (100b) and one side in the axial direction A tapered protrusion 302 is formed in contact with the front end of the silver rebar and the tapered shape of the other side thereof is formed to form a protrusion stopper 300 installed inside the sleeve 100b, and the sleeve is formed on the outer surface in a short round bar shape. The catching jaw 301 that engages with the internal catching jaw 105 of 100c is In the axial direction, one side of the screw node reinforcement is characterized in that the groove-shaped stopper 400 is formed in contact with the front end of the reinforcement (1) and the other side is formed with a tapered groove portion 402 made of a tapered groove Threaded sleeves for seams. 55. The internal female thread portion 105a according to claim 54, wherein an internal female thread portion 105a is formed at one end surface of the inner surface of one sleeve 100d, and an internal female thread portion at one end surface of one side surface of the inner surface of the other sleeve 100e. (105a) is formed, the outer surface in the form of a boltless wrench bolt is formed with a male thread portion 303 is screwed to the internal female thread portion (105a) of the sleeve (100d) and one side in the axial direction is the tip of the reinforcing bar (1a) And a tapered protrusion 302 protruding in a tapered shape on the other side thereof is formed with a protrusion stopper 300a installed on the inner surface of the one sleeve 100d, and has an external thread in the form of a solid bolt. 403 is formed and screwed to the internal female thread portion 105a of the sleeve 100e, the tapered groove portion 402 of which one side is in contact with the tip of the reinforcing bar 1 in the axial direction and the other side is formed with a tapered groove. Grooved stopper (400a) is formed Threaded sleeve for the joint of the threaded reinforcing bar, characterized in that. 57. The outer surface of the end catching jaw 201 of the engaging sockets 200, 200a, 200b is formed of a polygonal section 204 having a polygonal cross section, and the sleeve 100a, Threaded sleeve for the joint of the screw node reinforcement, characterized in that the polygonal section 104 having a polygonal cross section is formed at one end of (100c, 100e). 57. A threaded sleeve according to claim 54 or 55 or 56, wherein the entire outer surface of the engagement socket (200, 200a, 200b) is formed in a polygonal cross section. A cylindrical sleeve and threaded sleeve for the joint of threaded bar reinforcement, characterized in that a small pitch common thread formed in the lock nut and the presser socket and the inner lock nut and the outer lock nut and the connecting bolt is formed by more than one row of screws. The lock nut coupled to both ends of the semi-circular sleeve is replaced with a compatible structure and combined into various combinations.A combination consisting of a blotting socket and an inner lock nut coupled to both ends of the semi-circular sleeve, and a blotting socket, an inner lock nut and an external lock nut. Replace the lock nut coupled to both ends of the cylindrical sleeve by combining with the compatible structure, and replace the lock nut coupled to the various structure by replacing with a compatible structure, and the inner lock nut and the outer lock coupled to both ends of the cylindrical sleeve Threaded sleeve for the joints of the screw node reinforcement, characterized in that the combination of the combination consisting of nuts replaced by a compatible structure in various combinations.

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