KR200265991Y1 - steel reinforcement connector - Google Patents

Abstract

The present invention relates to a reinforcing bar connection device, comprising a general reinforcing bar connection device for connecting two reinforcing bars, the deformed reinforcing bar and the rib is formed on the outer peripheral surface at predetermined intervals; A cylindrical member formed in the axial direction so as to cover the ribs of the outer circumferential surface of the deformed reinforcing bar; two clamps each comprising a first clamp and a second clamp disposed at right and left sides; A coupling formed by the first clamp and the second clamp so as to be in close contact with each of the inner circumferential surfaces thereof, and having a cylindrical shape, the coupling comprising a first coupling and a second coupling having male threads formed on the outer circumferential surface thereof in a longitudinal direction thereof; The first coupling and the second coupling are screwed inwardly on the left and right side surfaces thereof, and are formed in a cylindrical shape, and a constant space portion is formed at the center of the inner circumferential surface in the longitudinal direction. The cylindrical connection member is formed to be screwed by the clamp, the coupling and the connecting member to the outside of the two reinforcing bar to be connected to properly maintain the volume of the connection portion, facilitating the casting of concrete and to secure the coating thickness At the same time, there is an effect of reducing the construction cost by increasing the cost of manufacturing parts and simplifying the assembly process.

Description

Reinforcing bar connector {steel reinforcement connector}

The present invention relates to a reinforcing bar connection device, and to a reinforcing bar connection device to extend the length of the reinforcing bar when the length of the reinforcing bar forming the frame during construction work is short.

In general, reinforcing bars are used to reinforce concrete structures when stiffening concrete in construction or civil engineering. For reinforcing bars, large diameter bars are used when the size of the structure is large, and small diameter bars are used when they are small. In addition, various types of rebar are used depending on the purpose of the structure.

Here, since the size (length, diameter) of the reinforcing bar as described above is limited, when the height and size of the structure is large, usually two or more reinforcing bars are subsequently used.

In this case, the conventional reinforcing bar joint uses a double joint method of overlapping two reinforcing bars, and this reinforcing bar joint method is forced to be more than 25 times the reinforcing diameter because the binding force is weak. It is prescribed in the specification.

However, as described above, the reinforcing bars are inexpensive but require a lot of manpower and time due to their dependence on manual work. In the case of installation, the concrete was not properly placed on the reinforcing bar portions, and the overall strength of the structure was lowered.

Thus, the following technology has been filed in order to solve the problems as described above.

First, the prior art is a reinforcing bar connection structure of Korean Patent No. 0240099 (October 25, 1999, registered), has a circumferential jaw at the center and a threaded portion is formed at both sides of the outer diameter, and the inner diameter is at both sides based on the center portion. Intermediate member and cylindrical member formed in a tapered surface of the shape to be expanded to the axial direction divided into two pairs of pressure fixed to the front end of the reinforcing bar to be interconnected, the front end is pressed by both tapered surfaces of the intermediate member The first and second jacks, and the first and second couplers, which press the outer peripheral surface of one side of the first and second jacks, and at the same time the front end portions thereof are fastened to both male threads of the intermediate member, connect the two rebars in the longitudinal direction. In the structure to say,

The first and second jacks are formed by splitting the cylindrical member in the axial direction, and each one is composed of two sets, each of which has a rib groove for accommodating longitudinal ribs and circumferential ribs on the outer circumferential surface of the rebar. And, the outer diameter portion is characterized in that both ends are made of a small diameter portion from the center portion, the center portion is formed of a large diameter portion formed on both sides of the tapered surface corresponding to both tapered surfaces of the intermediate member.

However, in the conventional reinforcing bar connection structure composed of the above structure, many parts such as the intermediate member, taper jack and coupler are assembled on the outer side of the two reinforcing bars to be connected, so that the volume (outer diameter) of this part becomes excessively large, thereby covering the concrete. There was a problem that the thickness is difficult to match.

In other words, the reinforcing bars embedded in concrete should have a coating thickness of 25 mm or more. In the above-described reinforcing bar connection structure, it is difficult to match the cover thickness because the outer diameter of the connecting part is much larger than that of the bar, and many parts are screwed. Due to the assembly relationship, there is also a problem that the workability is significantly reduced with the increase in the cost of manufacturing these parts.

Second, the prior art is a reinforcing bar connecting structure of Korean Patent No. 220173 (registered on June 18, 1999) in connecting two reinforcing bars in the longitudinal direction, the effective diameter of both ends of the reinforcing bars are large diameter portion Each of the connecting portions are formed in a tapered shape so as to form a jack, and a jack capable of pressing the connection taper surface of one of the rebars as a whole, and the inner diameter portion of the inner diameter portion while the rear portion of the inner diameter presses the tapered surface of the connection of the other reinforcing bars connected to the reinforcing bars. The part is characterized in that the two reinforcing bars are connected by a coupler screwed to the jack.

However, the conventional reinforcing bar connection structure having the above-described configuration has a manufacturing problem in that the connecting part of the reinforcing bar should be formed with a large diameter, and also the two bars are screwed together by the jack and the coupler, thereby increasing the volume of the connecting part. Too large to make the concrete difficult to place, the problem of causing the increase in construction costs due to the increase in cost and the addition of the assembly process along with the difficulty of coating thickness.

Third, the prior art is the reinforcing bar connection device of Korean Utility Model Publication No. 1998-020421 (published on July 15, 1998). The outer surface of the semicircular connection port forms a tapered surface, and a wide space groove is formed in the middle part of the inner surface. Forming a plurality of narrow space grooves on the upper and lower space grooves, the semi-circular connection port is symmetrically closely symmetrically around the up and down reinforcement, and then the inner surface of the tapered surface can be integrally coupled to the inner surface.

However, in the conventional reinforcing bar connection device having the structure as described above, because the connection surface of the semi-circular connector and the outer coupling tapered, a constant thickness must be maintained for the stability of the thin surface, so that the thick surface is inevitably thicker. Not only is it difficult to meet the coating thickness of the specification due to the large volume of the connection part, but the spacing between the reinforcing bar and the reinforcing bar is blocked by the connection part, which causes fine spacing.

In addition, the conventional reinforcing bar connecting device is difficult to hit with a uniform force because the impact surface of the outer assembly is circular at the time of assembly, as well as the contact surface of the semi-circular connector and the outer assembly is circular, so that the large impact force due to the large friction surface There is a problem that the effective combination is difficult to require.

Therefore, the present invention was devised to solve the problems described above, and the joints of the reinforcing bar is simple, but the strength is surely ensured, and the volume of the connection is reduced, so that it is easy to control the coating thickness of the concrete. The purpose of the present invention is to provide a rebar joint device that is easy to assemble and construct.

Reinforcing bar joint according to the present invention for achieving the above object is a conventional reinforcing bar connecting device for connecting two reinforcing bar, the reinforcing bar is formed ribs at predetermined intervals on the outer peripheral surface; A cylindrical member formed in the axial direction so as to cover the ribs of the outer circumferential surface of the deformed reinforcing bar; two clamps each comprising a first clamp and a second clamp disposed at right and left sides; A coupling formed by the first clamp and the second clamp so as to be in close contact with each of the inner circumferential surfaces thereof, and having a cylindrical shape, the coupling comprising a first coupling and a second coupling having male threads formed on the outer circumferential surface thereof in a longitudinal direction thereof; The first coupling and the second coupling are screwed inwardly on the left and right side surfaces thereof, and are formed in a cylindrical shape, and a constant space portion is formed at the center of the inner circumferential surface in the longitudinal direction, and the internal thread on the left and right inner circumferential surfaces based on the space portion. Characterized in that consisting of a cylindrical connecting member formed.

1 is a perspective view showing a rebar joint according to the present invention,

2 is a cross-sectional view showing a reinforcing bar joint according to the present invention,

Figure 3 is an exploded view illustrating the reinforcing bar joint according to the present invention.

Explanation of symbols on the main parts of the drawing

10: deformed steel 12: rib

22: first clamp 22a: first clamp inclined surface

22b: rib groove 24: second clamp

24a: slope of the second clamp 24b: rib groove

32: first coupling 32a: first coupling inclined surface

32b: first coupling male thread 34: second coupling

34a: second coupling inclined surface 34b: second coupling male thread

40 connection member 42 space part

44: Female thread for connecting member

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

1 is a perspective view showing a reinforcing bar joint according to the present invention, Figure 2 is a cross-sectional view showing a reinforcing bar joint according to the present invention, Figure 3 is an exploded view illustrating the reinforcing bar connecting device according to the present invention. .

As shown in these drawings, the reinforcing bar joint according to the present invention is a conventional reinforcing bar connecting device to connect the two reinforcing bar, the reinforcing bar 10 is formed with ribs 12 at predetermined intervals on the outer peripheral surface; The cylindrical member is divided in the axial direction so as to cover the ribs 12 on the outer circumferential surface of the deformed reinforcing bar 10, and the first clamp 22 and the second clamp 24, which are arranged on the left and right sides in a pair of two, are formed. A clamp consisting of;

The first clamp 22 and the second clamp 24 are inserted so as to be firmly in close contact with the inner circumferential surface, respectively, made of a cylinder, the first coupling 32 and the male screw 36 formed on the outer circumferential surface in the longitudinal direction; A coupling consisting of a second coupling 34;

The first coupling 32 and the second coupling 34 are screwed inwards on the left and right sides thereof, are made of a cylinder, and a constant space portion 42 is formed at the center of the inner circumferential surface in the longitudinal direction, and the space thereof. It is composed of a cylindrical connecting member 40 formed with a female screw 44 on the left and right inner peripheral surface on the basis of the portion 42.

Here, the clamp is composed of the first clamp 22 and the second clamp 24, the first and second clamp inclined surface (22a, 24a) is formed on the outer peripheral surface at a predetermined angle from one end to the other end On these inner circumferential surfaces, rib grooves 22b and 24b are formed to correspond to the ribs 12 of the deformed bar 10.

That is, the clamps are formed by dividing the cylindrical member in the axial direction, and each of the two clamps is formed of a pair of the first clamp 22 and the second clamp 24, and the inner diameter portion thereof has a deformed reinforcing bar ( Rib grooves 22b and 24b for receiving ribs 12 formed in the longitudinal direction and the circumferential direction are respectively formed in the outer circumferential portion of 10), and these rib grooves 22b and 24b are formed of the first clamp and the second clamp. The number of rib grooves 22b and 24b also varies depending on the length of the grooves 22 and 24, and the number of rib grooves 22b and 24b is not limited. The cross-sectional shape of the rib grooves 22b and 24b is not limited to a specific shape. Note that no.

The outer circumferential surfaces of the first clamp 22 and the second clamp 24 extend from one side end to the other end in order to be inserted into the inclined surfaces 32a and 34a of the inner circumferential surfaces of the couplings 32 and 34 corresponding thereto. The first and second clamp inclined surfaces 22a and 24a are formed at a predetermined angle.

The first clamp 22 and the second clamp in the state in which the deformed reinforcing bar 10 is inserted in order to firmly pass the deformed reinforcing bar 10 inserted into the inner circumferential surfaces of the first clamp 22 and the second clamp 24. (24) is fitted to the first coupling 32 and the second coupling 34, respectively, the deformed reinforcing bar 10 is inserted into the first clamp 22 and the second clamp 24, Since the first clamp 22 and the second clamp 24 have a cross-sectional shape in which the first coupling 32 and the second coupling 34 are held, ultimately, the first clamp having the deformed reinforcing bar 10 inserted therein ( The opening 22 and the second clamp 24 are allowed to be received at the inclined surfaces 22a and 24a of the first coupling 32 and the second coupling 34 to prevent the opening of the second clamp 24 from spreading outward.

As described above, when the first clamp 22 and the second clamp 24 are coupled to the outer circumference of the deformed reinforcing bar 10, the first clamp 22 between the ribs 12 formed in the deformed reinforcing bar 10. ) And the rib grooves 22b and 24b of the second clamp 24 are coupled to the first clamp 22, the second clamp and the deformed reinforcing bar 10 to be firmly adhered to each other, so that the deformed reinforcing bar 10 may be formed. The escape from the first clamp 22 and the second clamp 24 never occurs.

In addition, the coupling 30 is formed of a cylindrical member of the first coupling 32 and the second coupling 34, corresponding to the first and second clamp inclined surfaces (22a, 24a) inserted into the inner peripheral surface In the cross-sectional shape, the first and second coupling inclined surfaces 32a and 34a are formed at predetermined angles from one end to the other end, and the male screw 36 is formed on the outer peripheral surface thereof.

The reason why the inclined surfaces 32a and 34a are formed on the inner circumferential surfaces of the first coupling 32 and the second coupling 34 in this manner is that the first clamp 22 and the second clamp 24 are coupled thereto. At the same time, the male screw 36 is formed on the outer circumferential surface thereof so as to facilitate screwing to the connection member 40 coupled thereto.

On the other hand, the connecting member 40 is made of a cylindrical shape, a space portion 42 is formed in the center of the inner circumferential surface, the female screw 44 is formed on the inner circumferential surface of the left and right sides based on the space portion 42.

The reason for forming the space portion 42 in the connecting member 40 as described above is to accommodate the deformed reinforcing bar 10 smoothly regardless of irregular breakage of the deformed reinforcing bar 10 occupying the space 42. The following is for the female screw 44 is to connect the male screw (32b, 34b) of the first coupling 32 and the second coupling 34 coupled to it by screwing to connect firmly.

It describes the connection process of the reinforcing bar joint according to the present invention made of a configuration as described above.

When connecting the deformed reinforcing bar 10 connected to the deformed reinforcing bar 10 installed in concrete with reinforcing bars, the outer circumferential surface of each deformed bar 10 is connected to the first clamp 22 and the second clamp 24. It wraps and wraps the ribs 12 of the respective deformed bars 10 in engagement with the rib grooves 22b and 24b of the first clamp 22 and the second clamp 24.

After that, the first clamp 22 and the second clamp 24 are forcibly inserted into the inner circumferential surfaces of the first coupling 32 and the second coupling 34 by using the inclined surfaces thereof. And it is possible to prevent the deformed reinforcing bar 10 fixed to the second clamp 24 to open and at the same time there is an effect that firmly in close contact with it.

In addition, the first coupling 32 and the second coupling 34 surrounding each of the deformed reinforcing bars 10 are centered on the connecting member 40. The coupling 34 is connected, but when both male screws (32b, 34b) are turned in a tubular manner, if the screw is firmly screwed with the female screw 44 formed on the left and right sides of the inner circumferential surface of the connecting member 40, The joint with the deformed steel bars 10 to be connected with the deformed steel bars 10 is completed.

As described above, the reinforcing bar coupling device according to the present invention is screwed by the clamp, the coupling and the connecting member to the outside of the two deformed reinforcing bars to properly maintain the volume of the connection site, to facilitate the casting of concrete In addition, it is possible to secure the coating thickness and reduce the construction cost by increasing the cost and simplifying the assembly process according to the parts manufacturing.

Claims (4)

In a conventional reinforcing bar connecting the two bars, A deformed steel bar having ribs formed at predetermined intervals on an outer circumferential surface thereof; A cylindrical member formed in the axial direction so as to cover the ribs of the outer circumferential surface of the deformed reinforcing bar; two clamps each comprising a first clamp and a second clamp disposed at right and left sides; A coupling formed by the first clamp and the second clamp so as to be in close contact with each of the inner circumferential surfaces thereof, and having a cylindrical shape, the coupling comprising a first coupling and a second coupling having male threads formed on the outer circumferential surface thereof in a longitudinal direction thereof; The first coupling and the second coupling are screwed inwardly on the left and right side surfaces thereof, and are formed in a cylindrical shape, and a constant space portion is formed at the center of the inner circumferential surface in the longitudinal direction, and the internal thread on the left and right inner circumferential surfaces based on the space portion. Reinforcing bar connecting device, characterized in that consisting of a cylindrical connecting member formed. The method of claim 1, wherein the clamp comprises a first clamp and a second clamp, the reinforcing bar is characterized in that the inclined surface is formed at a predetermined angle from one end to the other end on these outer peripheral surface. The method of claim 1, wherein the clamp is made of a first clamp and the second clamp, the reinforcing bar is characterized in that the rib groove is formed on the inner peripheral surface to correspond to the rib of the deformed reinforcing bar. The method of claim 1, wherein the coupling is made of a first coupling and a second coupling, the cross-sectional shape corresponding to the clamps are inserted into these inner peripheral surface is formed inclined surface at a predetermined angle from one end to the other end Reinforcing bar fittings characterized in.