KR102258801B1 - Reinforced anti-flow type universal coupler - Google Patents

Abstract

The present invention provides a reinforcing bar flow prevention type universal coupler, which is applied with a universal joint structure so that two reinforcing bars can be firmly connected and fixed without flow even when the two reinforcing bars are arranged at alternate angles, and which can accommodate changes in the position or arrangement angle of the reinforcing bars due to external force after the reinforcing bars are connected and fixed without stress concentration or deformation. Therefore, the reinforcing bar connection-fixing stability can be increased.

Description

Reinforced anti-flow type universal coupler

The present invention relates to a rebar flow-preventing universal coupler, and more specifically, even if two reinforcing bars are arranged at an angle, it can be firmly connected without flow and fixed, and the position or arrangement of the rebar by external force after connection-fixation. The present invention relates to a rebar flow prevention universal coupler that can accommodate changes in angles without stress concentration or deformation, thereby increasing rebar connection-fixing stability.

In general, reinforced concrete construction by reinforcement reinforcement is a foundation of reinforced concrete based on the connection between reinforced reinforcement and reinforced couplers by attaching a joint reinforcement to the end of the reinforcement to connect the reinforcement or using a joint method through screw processing. Perform the reinforcement work.

At this time, the reinforcing bar is standardized and produced with a certain length, but since a product of a certain standard is used at the actual construction site, reinforcing bars with a long length are connected to each other when necessary.

As a connection method of such reinforcing bars, there are overlapping joints, welding joints, and mechanical joints.

Lap joint is a method in which reinforcing bars are overlapped with each other in a predetermined length and tied with wire or wire.Since reinforcing bars must be overlapped each time, the reinforcing bar is largely lost and the strength of the overlapping portion is weak, so it is easily separated and has a disadvantage of poor workability. In addition, since the welding joint is cumbersome to construct and heats the welded portion, there is a disadvantage that deformation occurs due to heat or the strength around the welded portion is significantly weakened.

The mechanical joint method is a rebar connection method developed to compensate for the above drawbacks. It is fastened by placing a coupler at the end of the reinforcing bar. It has excellent mechanical properties such as tension, compression, bending, and torsion, and maintains a constant overall length. It has the advantage of enabling precision construction.

As a related art, Korean Patent Publication No. 10-0914049 (articulated coupler for connecting reinforcing bars) has been published.

Korean Registered Patent Publication No. 10-0914049 (articulated coupler for rebar connection) relates to an articulated coupler for reinforcing bar connection that interconnects the ends of reinforcing bars in the construction process of reinforced concrete structures. Looking at, since the end of the reinforcing bar is tapered and threaded to be fastened to the support, the strength of the end of the reinforcing bar is weakened, and when torsional and bending stresses are continuously applied to the reinforcing bars arranged at an angle, the thread may be disconnected. Therefore, the development of technology that improves this is urgent.

[0001] Korean Registered Patent Publication No. 10-0914049 (articulated coupler for reinforcing bar connection) [0002] Korean Utility Model Publication No. 20-0457568 (reinforcing bar connection structure)

In order to solve the problems of the prior art as described above, by applying a universal joint structure, even if two reinforcing bars are arranged at an angle, it can be firmly connected-fixed without flow, and after the connection-fixed, the reinforcing bar is An object of the present invention is to provide a universal coupler that prevents flow of reinforcing bars that can accommodate changes in position or arrangement angle without stress concentration or deformation, thereby increasing rebar connection-fixing stability.

In addition, the present invention provides a structure in which a coupler housing and a ball socket are coupled to each other, and after inserting a reinforcing bar into the coupler housing, the coupler housing and the ball socket are respectively fastened to the coupler to complete the fixing of the reinforcing bar. It is an object of the present invention to provide a universal coupler that prevents the flow of rebars that can be rigidly fixed without flow of rebars.

According to a feature of the present invention for achieving the above object, the reinforcing bar inlet hole on one side and the coupling hole on the other side are formed in a tubular shape connected through an inner passage, and the tapered inner peripheral surface and the coupling hole whose inner diameter is reduced in one direction A pair of coupler housings having a non-tapered inner peripheral surface connected to the same diameter as; A pair of knitting units formed of a plurality of pieces, inserted into the inner passageway of the coupler housing in a state spaced apart from each other in a circular line, and provided with a plurality of locking projections in the longitudinal direction on the inner side thereof; A coupling hole in which one side is inserted into the inner passage and disposed at the other end of the knitting unit to pressurize the knitting unit in close contact, and a hemispherical ball inlet hole is formed on the other side; A pair of ball sockets having a coupling hole insertion hole into which the other side of the coupling hole is inserted, and having a ball seating hole formed to communicate with the ball inlet hole of the coupling hole when combined; A pair of ball units comprising a spherical ball inserted into the ball seating hole and a ball pipe formed to pass through the ball socket from the other end of the ball, and having a male threaded surface formed on an outer circumferential surface thereof; A coupling pipe disposed between the ball units and having female threaded surfaces to which the ball pipes are coupled at both ends of the inner side to connect a pair of the ball pipes; and a pair of couplers arranged to be symmetrical. In a state in which the reinforcing bar is inserted into the housing, the coupler housing induces movement in one direction of the unit unit by a length that is coupled to the coupling hole, and the reinforcing bar is fixed without flow even if two reinforcing bars are disposed at an opposite angle. Reinforcing bar flow prevention universal coupler is the gist of the present invention.

The reinforced flow prevention universal coupler according to the present invention is inserted into the ball pipe of the ball unit to move, and is closely fixed to both ends of the coupling pipe to prevent the flow of the coupling pipe and keep it fixed in place. It is preferable to be a reinforced flow prevention universal coupler, characterized in that it comprises a lock nut to let.

Such a reinforced flow prevention universal coupler according to the present invention is inserted into the inner passage of the coupler housing, is disposed between the knitting unit and the coupling, a pair of imparting an elastic force in the longitudinal direction to the knitting unit It is preferable that it is made of a universal coupler that prevents the flow of reinforced bars, characterized in that it is configured including a spring.

The coupling port of the reinforced flow preventing universal coupler according to the present invention has a first male threaded surface coupled to the first female threaded surface formed on the non-tapered inner circumferential surface of the coupler housing on one side, and the ball is formed on the other side. Characterized in that a second male threaded surface coupled with a second female threaded surface formed on an inner circumferential surface of the socket is formed, the coupling hole is screwed to the inside of the coupler housing and the ball socket, and pressurizes the unit unit It is preferable to use a universal coupler that prevents the flow of reinforcing bars.

The unit unit of the universal coupler for preventing the flow of reinforcing bars according to the present invention is a band ring shape having a rectangular vertical cross-sectional shape having a predetermined thickness and a cut-out portion formed at a set section, so that the unit body is positioned on a circular line. Including; an insertion groove which is formed at the same height as the thickness of the knitting body and into which the knitting body ring is inserted in the circumferential direction on the inner surface of the knitted body ring; is formed, in the knitting body ring fitted into the insertion groove. It is preferable to use a rebar flow prevention universal coupler, characterized in that the plurality of pieces are inserted into the inner passage of the coupler housing while maintaining the same height.

According to the rebar flow preventing universal coupler according to the present invention, there is an effect that the reinforcing bar is formed between the coupler housings arranged to be symmetrically arranged so as to rotate inside the ball socket, and the reinforcing bars arranged at an angle can be combined.

In addition, according to the rebar flow prevention universal coupler according to the present invention, after the rebar is inserted into the coupler housing, the coupler housing and the ball socket are respectively fastened to the coupler to complete the fixing of the rebar, so that it is possible to fix without flow. There is.

1 is a cross-sectional view showing the overall configuration of the present inventors reinforced flow prevention universal coupling.
2 is a cross-sectional view of a state in which the reinforcing bars of the present inventors rebar flow prevention universal coupling are disposed at different angles.
Figure 3 is a cross-sectional view of a coupler housing of the present invention rebar flow prevention universal coupling.
Figure 4 is a perspective view of a piece of the present invention rebar flow prevention universal coupling.
Figure 5 is a cross-sectional view of the unit unit of the present invention rebar flow prevention universal coupling.
Figure 6 is a side view of the present invention of the reinforcing bar flow-preventing universal coupling uniche ring.
Figure 7 is a cross-sectional view of the coupling of the present invention rebar flow prevention universal coupling.
8 is a cross-sectional view of the ball socket of the present inventors reinforced flow prevention universal coupling.
9 is a side view showing the ball unit of the present inventors reinforced flow prevention universal coupling.
10 is a cross-sectional view of the coupling pipe of the present invention rebar flow prevention universal coupling.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Meanwhile, in the drawings and detailed description, the general universal coupler has been simplified or omitted for configuration and operation that can be easily recognized by those in the field. In particular, in the illustration and detailed description of the drawings, detailed descriptions and illustrations of specific technical configurations and actions of elements not directly related to the technical features of the present invention are omitted, and only the technical configurations related to the present invention are briefly illustrated or described. I did.

1 and 2, the present inventors reinforced flow prevention universal coupler 1000 is largely a coupler housing 100, a unit unit 200, a coupling unit 300, a ball socket 400, a ball unit 500 ), it is configured to include a coupling pipe (600).

As shown in Figure 2, the present inventors reinforced flow prevention universal coupler 1000 is formed so that the ball 510 of the ball unit 500 is rotatable inside a pair of ball sockets 400 arranged to be symmetrical Even if two reinforcing bars are arranged at opposite angles, the reinforcing bars can be firmly fixed without flow without stress concentration or deformation.

Referring to FIG. 3, the coupler housing 100 has a tubular shape, and a reinforcing bar inflow hole 110 is formed on one side of the coupler housing, and a coupling hole 120 is formed on the other side to be connected through an inner passage.

At this time, the reinforcement inflow hole 110 is a hole through which reinforcement is introduced, and is preferably formed in a size corresponding to the outer diameter of the reinforcement P.

In addition, the coupler housing 100 has a tapered inner circumferential surface 130 having a smaller inner diameter in the direction of the reinforcing bar inlet hole 110 on one side, and a non-tapered inner circumferential surface 140 having the same diameter as the coupling hole 120 on the other side. Is formed.

A first female threaded surface 11 may be formed on the non-tapered inner circumferential surface 140 so as to be coupled with the coupling hole 300, and a first male threaded surface 12 is formed on the outer circumferential surface of the coupling hole 300. It is formed to be coupled to the coupler housing 100 and the coupling unit 300.

At this time, the first female threaded surface 11 is formed only in the section that is coupled to the coupling hole 300 on the non-tapered inner peripheral surface 140 of the coupler housing 100 to limit the fastening distance.

In addition, the coupler housing 100 may have a coupling guide surface having a polygonal shape on one side of the outer circumferential surface. By performing the tightening operation, it is possible to more firmly fasten the reinforcing bar inserted into the coupler housing 100. Here, the coupling guidance surface is preferably made of a hexagonal shape, and a safety guidance surface made of a flat or curved surface may be formed at the corners of the coupling guidance surface.

This safety guide surface serves to prevent the operator from getting injured by the edge of the sharp coupling guide surface when the coupler housing 100 and the coupler 300 are coupled.

Referring to FIGS. 4 and 5, the knitting unit 200 is made of a plurality of knitting bodies 210, and is inserted and disposed inside a pair of coupler housings 100, respectively.

In this case, the knitting unit 200 is inserted into the inner passage through the coupling hole 120 of the coupler housing 100 in a state in which a plurality of pieces 210 are spaced apart in a circular line.

And, the piece unit 200 is provided with a plurality of locking protrusions 211 in the longitudinal direction on the inner surface, and serves to fix while in close contact with the outer circumferential surface of the reinforcing bar (P).

The locking protrusion 211 is formed inclined in the direction of the coupling hole 120 on the other side opposite to the direction in which the reinforcing bar (P) is introduced, and is in close contact with the reinforcing bar (P), thereby preventing the sliding of the reinforcing bar (P) and preventing friction. Can be improved.

In order to firmly grip the reinforcing bar (P) while achieving a balance, it is preferable that the four knitting units 210 form one knitting unit 200.

In addition, when the coupling unit 200 is coupled to the coupler housing 100, the inner circumferential surface of the unit 200 is tapered so that one side of the coupling unit 300 presses the other side of the unit 200 to move in one direction. It is formed longer than (130), and is preferably formed shorter than the length of the inner passage.

Here, the knitted body 210 may further have a knitted ring insertion groove 212 having a set height h in the circumferential direction on the inner surface thereof.

At this time, it is preferable that the knitted ring insertion groove 212 is formed to have the same height as the thickness of the knitted ring 220 so that the knitted ring 220 is fitted and fixed to the knitted body 210.

In addition, the flat body 210 may be formed of an expanded surface 213, an expansion groove 214, a horizontal surface 215, and a contact surface 216.

First, the expanded surface 213 is disposed to abut against the tapered inner peripheral surface 130 of the coupler housing 100.

In addition, when the coupler housing 100 and the coupler 300 are coupled, the expansion facet 213 smoothly moves in the direction of the reinforcing bar inflow hole 110 along the tapered inner peripheral surface 130 so that the locking protrusion 211 is reinforced (P). ) Can be fixed by tightly engaging the outer circumferential surface.

In the expansion groove 214, a groove of a predetermined thickness is formed along the outer circumferential surface of the expansion surface 213.

In this case, a plurality of expansion grooves 214 may be formed on the expansion surface 213, and the inner wall of the groove may be formed to be inclined.

The horizontal plane 215 is formed with a constant outer diameter extending from the other end of the expanded plane 213.

The horizontal plane 215 may reduce frictional force generated when the expanded plane 213 is inserted along the tapered inner circumferential surface 130.

The contact surface body 216 is a surface in contact with a pressing member such as a spring 800 that may be disposed on one side of the coupler 300 or between the contact surface body 216 and the coupler 300, and the contact surface body 216 ) By the pressing force of the coupling hole 300, the expansion surface 213 can be moved in the direction of the reinforcing bar inlet hole 110 along the tapered inner circumferential surface 130.

Referring to FIG. 7, the coupler 300 is disposed between the coupler housing 100 and the ball socket 400, has a cylindrical shape, and one side is coupled to the coupler housing 100.

At this time, the first male threaded surface 12 formed on one outer circumferential surface of the coupling hole 300 is combined with the first female threaded surface 11 formed on the non-tapered inner circumferential surface 140 of the coupler housing 100 While being disposed at the other end of the unit 200, the unit 200 is pressed in close contact.

In addition, a second male threaded surface 22 coupled to the ball socket 400 may be formed on the other side of the coupling hole 300.

At this time, a non-screwed surface may be formed between the first male threaded surface 12 and the second male threaded surface 22, which may be provided in the center of the outer circumferential surface of the coupling hole 300.

This non-screwed surface allows the operator to identify the coupling length of both sides when coupling the coupler housing 100 and the ball socket 400, so that the coupling length with the reinforcing bar (P) can be adjusted, and the operation proceeds. You can easily check the situation.

In addition, a hemispherical ball inflow hole 310 is formed on the other side of the coupling hole 300, and one side of the ball unit 500 is disposed inside the ball inflow hole 310.

That is, based on the non-screwed surface of the coupling unit 300, one side is made of a closed surface so as to press the other end of the unit unit 200, the other side is opened and the ball unit 500 is disposed. It is desirable.

8, the ball socket 400 is provided with a coupling hole insertion hole 410 into which the other side of the coupling hole 300 is inserted, so that the ball socket 400 communicates with the ball inlet hole 310 of the coupling hole 300 when combined. The ball seating hole 420 is formed.

Therefore, when the ball socket 400 is completely fastened to the coupling hole 300, it is coupled to abut the other end of the coupler housing 100, and a spherical space is formed inside, so that one side of the ball unit 500 is disposed. I can.

At this time, the diameter of the other end of the ball inlet hole 310 of the coupling hole 300 and the diameter of one end of the ball seating hole 420 of the ball socket 400 are preferably formed to be the same.

In addition, a second female threaded surface 21 that is fastened to the second male threaded surface 22 of the engaging hole 300 is provided inside the coupling hole insertion hole 410 so that the fastening length can be adjusted.

At this time, the second male threaded surface 22 of the coupling hole 300 is preferably formed to have the same length as the second female threaded surface.

In addition, an engaging portion may be formed on the inside of the ball socket 400 so that the ball unit 500 is not separated by being caught in the inner side.

The locking part is formed to catch a part of the inner surface of the ball 510 of the ball unit 500, but may be formed to rotate at a wide angle inside the ball socket 400.

Referring to FIG. 9, the ball unit 500 includes a spherical ball 510 and a pipe-shaped ball pipe 520 formed horizontally from the other end of the ball 510.

The ball 510 is inserted into the ball seating hole 420, and when the coupling hole 300 and the ball socket 400 are combined, one side is disposed in the ball inlet hole 310, and the other side is disposed in the ball seating hole 420 do.

At this time, one side of the ball 510 may be formed as a flat surface, and one side of the ball inflow hole 310 may also be formed as a flat surface.

In addition, the ball pipe 520 is formed with a male threaded surface 32 on the outer circumferential surface, and the coupling pipe 600 is coupled to the other side.

At this time, the male threaded surface 32 of the ball pipe 520 is formed on the entire outer circumferential surface, so that the fastening distance of the coupling pipe 600 can be adjusted.

Referring to FIG. 10, the coupling pipe 600 has a hollow cylindrical shape, and is disposed between a pair of ball units 500 arranged to be symmetrical on both sides, and the ball pipes 520 are respectively coupled to both inner ends. .

At this time, a female threaded surface (is formed on the inner surface of the coupling pipe 600 and the ball pipe 520 is screwed together, so that the coupling distance between the coupling pipe 600 and the ball pipe 520) can be adjusted.

In addition, the female threaded surface 31 formed on the inner surface of the coupling pipe 600 is formed only by a predetermined distance from the end, and a pipe passage 610 in which the thread is not processed may be formed.

At this time, the diameter of the pipe passage 610 may be formed larger than the inner diameter of the coupling pipe 600 on which the female threaded surface 31 is formed.

And, as shown in Figures 1 and 2, the present invention reinforced flow prevention universal coupler 1000, may be configured to include a pair of lock nuts 700.

Lock nuts 700 are disposed at both side ends of the coupling pipe 600, it is possible to firmly fix the coupling of the ball pipe 520 and the coupling pipe 600.

In this case, the degree of coupling of the coupling pipe 600 may be adjusted according to the position at which the lock nut 700 is coupled to the ball pipe 520.

In addition, the outer diameter of the lock nut 700 is formed larger than the outer diameter of the coupling pipe 600, it is preferable to support and fix the entire both side ends of the coupling pipe (600).

And, the present inventors reinforced flow prevention universal coupler 1000, is disposed between the unit 200 and the coupling unit 300, and includes a spring 800 for imparting an elastic force in the longitudinal direction to the unit unit 200 It can be configured.

The spring 800 is disposed on the non-tapered inner circumferential surface 140 side of the coupler housing 100, and the outer diameter of the spring 800 is preferably formed to be less than the diameter of the non-tapered inner circumferential surface 140. In addition, it is preferable that the outer diameter of the spring 800 is formed to be greater than the diameter of the tapered inner circumferential surface 130 to press the other end of the knitting unit 200 in the non-tapered inner circumferential surface 140 section.

Meanwhile, as shown in FIGS. 4 to 6, the knitting unit 200 may include a knitting ring 220 that guides the knitting body 210 to be positioned on a circular line.

At this time, on the inner surface of the knitted body 210, a knitted ring insertion groove 212 is formed in the circumferential direction, and the knitted ring 220 is inserted, and a plurality of pieces (the pieces of the knitted body maintain the same height) by the inserted knitted ring 220 And is inserted into the inner passage of the coupler housing 100.

The knitted ring 220 is inserted into the knitted ring insertion groove 212 and guides a plurality of knitted bodies 210 constituting the knitted unit 200 to be positioned on a circular line.

At this time, the knitted ring 220 is made of an elastic material having a friendly (優弧) shape having a cut-out portion 221 cut in the set section.

Here, the knitted ring 220 may be made of a metal material or a resin material having elasticity.

In addition, the knitting ring 220 is formed in a band ring shape having a rectangular vertical cross-sectional shape, and the upper and lower thickness of the knitting ring 220 is formed at the same height as the knitting ring insertion groove 212 formed in the knitting body 210, so that the knitting body ( 210) and the knitting ring 220 can be fitted.

Meanwhile, the diameter of the piece ring 220 can be adjusted by the cutout 221.

First, before the coupling unit 300 is coupled to the coupler housing 100, the knitting unit 200 may be disposed on the non-tapered inner peripheral surface 140.

And, when the coupling unit 300 is completely combined with the coupler housing 100 so that one side of the coupling unit 300 presses the other side of the knitting unit 200, the knitting unit 200 is formed due to the knitting unit ring 220. The piece 210 may be simultaneously inserted in the direction of the reinforcing bar inflow hole 110.

At this time, the outer diameter of the knitted unit 200 before being inserted into the tapered inner circumferential surface 130 may be formed larger than the outer diameter after being inserted into the tapered inner circumferential surface 130.

As described above, a rebar flow-preventing universal coupler according to an embodiment of the present invention has been shown according to the above description and drawings, but this is only an example and various changes within the scope not departing from the technical idea of the present invention And it will be appreciated by those of ordinary skill in the art that changes are possible.

11: 1st female threaded surface
12: first male threaded surface
21: 2nd female threaded surface
22: 2nd male threaded surface
31: female threaded surface
32: male threaded surface
100: coupler housing
110: rebar inflow hole
120: coupling hole
130: taper inner surface
140: if non-tapered
200: single unit
210: single body
211: locking protrusion
212: Pleated chain ring insertion groove
213: dihedral
214: expansion groove
215: horizontal plane
216: contact surface
220: knitting ring
221: incision
300: coupling
310: Ball inflow hole
400: ball socket
410: coupling hole insertion hole
420: ball seating hole
500: ball unit
510: ball
520: ball pipe
600: combined pipe
610: pipe passage
700: lock nut
800: spring
1000: Rebar flow prevention universal coupler
P: rebar

Claims (5)

The reinforcing bar inflow hole 110 on one side and the coupling hole 120 on the other side are formed in a tube shape connected through an inner passage, and the tapered inner circumferential surface 130 and the coupling hole 120 having a smaller inner diameter in one direction are the same A pair of coupler housings 100 having a non-tapered inner peripheral surface 140 connected in diameter;
A pair consisting of a plurality of pieces 210, inserted into the inner passage of the coupler housing 100 in a state spaced apart from each other in a circular line, and equipped with a plurality of locking protrusions 211 in the longitudinal direction on the inner side The unit of the unit 200;
As a cylindrical shape, one side is inserted into the inner passage and disposed at the other end of the knitting unit 200 to intimately press the knitting unit 200, and a hemispherical ball inflow hole 310 is formed on the other side. Coupler 300;
As long as the coupling hole insertion hole 410 into which the other side of the coupling hole 300 is inserted is provided, and a ball seating hole 420 formed so as to communicate with the ball inlet hole 310 of the coupling hole 300 when combined is formed A pair of ball sockets 400;
A spherical ball 510 inserted into the ball seating hole 420; And, formed to penetrate the ball socket 400 from the other end of the ball 510, and a male threaded surface 32 is formed on the outer circumferential surface A pair of ball units 500 made of a ball pipe 520;
A coupling pipe 600 that is disposed between the ball units 500 and has female threaded surfaces 31 to which the ball pipes 520 are coupled at both inner ends to connect the pair of ball pipes 520 ;
A lock that is inserted into the ball pipe 520 of the ball unit 500 and is moved, and is closely fixed to both ends of the coupling pipe 600 to prevent the flow of the coupling pipe 600 and keep it fixed in the correct position. Nut 700;
A pair of springs inserted into the inner passage of the coupler housing 100 and disposed between the knitting unit 200 and the coupling unit 300 to impart an elastic force in the longitudinal direction to the knitting unit 200 ( 800); consists of, including,
In a state in which a reinforcing bar is inserted into a pair of coupler housings 100 arranged to be symmetrical, the coupler housing 100 is guided to move in one direction of the flat body unit 200 by the length that is coupled to the coupling unit 300 Reinforcing bar flow prevention universal coupler, characterized in that fixing the reinforcing bar without flow even if two reinforcing bars are arranged at an opposite angle.
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