KR101224542B1 - A reinforcing bar connector - Google Patents

Abstract

PURPOSE: A connector for a reinforcing bar is provided to easily and simply assemble reinforcing bars to each other and to prevent the assembled reinforcing bars from being separated from the connector. CONSTITUTION: A connector for a reinforcing bar comprises a casing(10), a reinforcing bar binding cap(20), and fastening bolts(30). The casing comprises a side wall(11) and a support wall(12). The side wall has reinforcing bar and binding cap housing grooves for receiving reinforcing bars(5) and binding caps therein. The support wall closes the inner center portion of the side wall. The reinforcing bar binding cap is received in a second inner diameter(R2) of the casing and has a third inner diameter(R3). The fastening bolts are fastened to a bolt fastening hole of the casing and a bolt housing groove of the reinforcing bar binding cap.

Description

Connector for reinforcing bar {A REINFORCING BAR CONNECTOR}

The present invention relates to a connector for reinforcing bar connection, and more particularly, to a connector for reinforcing bar connection that interconnects a plurality of reinforcing bars used in construction of reinforced concrete structures, etc. in a mechanical structure.

Reinforced concrete structure is a structure in which the reinforcing steel reinforcement in the concrete interior, it is widely used in various construction and civil engineering as an advantage of easy construction and high durability. Reinforcing bars used in reinforced concrete structures are generally cut and produced to a certain unit length in a manufacturing plant for the convenience of fabrication and transportation. As described above, reinforcing bars manufactured to a certain unit length have to be connected in a horizontal or vertical direction during construction of reinforced concrete structures, and various connection methods for connecting the rebars have been developed and used.

Conventional overlap joints or welded joints are mainly used as a method of connecting reinforcing bars. Recently, mechanical joints using a coupler (also called a "connector") are mainly used.

As a representative example of a mechanical joint apparatus using such a coupler, the "one-touch rebar connecting device" disclosed in Patent Publication No. 10-2002-0038291, Patent Document 1, and the Patent Registration Publication No. 10- And the "rebar coupling device" disclosed in 0725527.

As can be seen in Patent Literatures 1 and 2, a mechanical joint device using a conventional coupler is connected to both ends of the reinforcing bars using a coupler provided with a pressure provision means for increasing the pressure applied to the outer diameter of the reinforcing bar accommodated inside the coupler. There is a way to come. By the way, the mechanical joint using a conventional coupler is very complicated in the construction of the coupler is not only inconvenient to manufacture and assembly, but also the interference fit method by rotating or pressing the reinforcing bar into the interior of the coupler is usually provided to narrow the inner diameter to go into the interior. Since it must be accommodated in the connection process of the rebar using a coupler, there was a problem that requires excessive time and effort to the worker.

In addition, a mechanical joint using a conventional coupler has an additional support structure that blocks or alleviates the coupling force between the coupler and the reinforcing bar when the coupling force between the coupler and the steel is impaired when an impact occurs due to reinforcement and tensile load applied to the coupler. There is a problem that does not prevent the inhibition of the bond strength.

KR 10-2000-0068439 A KR 10-0725527 B1

Therefore, the technical problem to be solved by the present invention is to solve the above problems

The connector is very simple to manufacture and assemble, and it is very easy and simple to connect with rebars, so the rebar connection efficiency is excellent, and even if the reinforcing bars and connectors are impacted by tensile load, etc. The present invention provides a connector for reinforcing bar connections that can prevent a deterioration or separation of a coupling force between a connector and a connector.

The connector for reinforcing bar connection according to the present invention for solving the above problems receives a plurality of reinforcing bars from the end in the longitudinal direction, respectively, a part of the inner circumference is in contact with a part of the side of the reinforcement by pressing when receiving the reinforcing bars The casing has a first inner diameter, and the other part of the inner circumference is formed to have a second inner diameter whose inner diameter is larger than the first inner diameter, and at least one bolt fastening hole penetrating the outside and the second inner diameter is formed. The third inner diameter is received and coupled to the second inner diameter of the casing and the inner circumference has a third inner diameter in contact with a portion of the other side of the reinforcement by pressurizing when receiving the reinforcing of the reinforcing bar, the outer circumference portion of the bolt receiving hole corresponding to the bolt fastening hole in a predetermined position A reinforcing bar binding cap having a groove formed therein, and fastened to the bolt fastening hole and the bolt receiving groove so that the reinforcing bar and the casing And a fastening bolt to provide a binding force by the pressing between the reinforcement binding cap.

The casing may include a side wall on which the bolt fastening hole is formed, and a support wall closing and closing the inside of the central portion of the side wall to limit and support a receiving depth of the reinforcing bar and the reinforcing bar binding cap.

The fastening bolt further comprises a locking protrusion formed at the end, the reinforcing bar binding cap is provided such that the width is smaller than the diameter of the bolt receiving groove, one end is connected to the bolt receiving groove along the longitudinal direction, The projection may further include at least one bolt engaging groove formed to engage the sliding receiving engagement in the longitudinal direction.

The reinforcing bar binding cap may further include a depth checking means for checking a depth accommodated in the casing.

The fastening bolt may further include a depth checking means for checking a depth accommodated in the casing.

The casing may further include a first departure preventing protrusion in the first inner diameter.

The reinforcing bar binding cap may further include a second departure preventing protrusion formed on the third inner diameter.

According to the connector for rebar connection according to the present invention as described above, the configuration is very simple and easy to manufacture and assembly, as well as the connection work with rebar is very easy and simple, the reinforcing bar work efficiency is excellent, Even if an impact is applied to the connector by a tensile load or the like, it has an additional coupling force inhibiting structure, which has an advantageous effect of preventing the bonding force from being inhibited or separated from the reinforcing bar and the connector.

1 is a state diagram connecting two rebars using a connector for rebar connection according to an embodiment of the present invention,
2 is a plan view of a casing which is a main part of a connector for rebar connection according to an embodiment of the present invention;
3 is an internal perspective view of FIG. 1;
4 is a cross-sectional view taken along the line IV-VI of FIG. 3;
5 is an exploded perspective view of FIG. 3;
6 is a cross-sectional view of the casing cut along the line VI-VI of FIG.
7 is a cross-sectional view of the reinforcing bar binding cap shown along the line VII-VII of FIG.
8 is a plan view of the reinforcing bar binding cap shown in FIG.
9 is a state in which the reinforcing bar binding cap is partially accommodated into the casing of the reinforcing bar connector according to an embodiment of the present invention;
10 is a cross-sectional view taken along the line VII-VII of FIG. 9,
11 is a state in which the connecting bolt is partially accommodated in the casing and the reinforcing bar binding cap of FIG.
12 is a cross-sectional view taken along the line II-XIII of FIG. 11;
13 is a front view showing the positional relationship between the reinforcing bar binding cap and the connecting bolt of FIG. 11;
14 is a state in which the reinforcing bar binding cap accommodating the connecting bolt of FIG. 12 is completely accommodated into the casing;
15 is a front view showing a changed positional relationship between the reinforcing bar binding cap and the connecting bolt of FIG. 14 compared to FIG. 13;
FIG. 16 is a state diagram in which reinforcing bars are received into the casing of FIG. 14;
17 is a cross-sectional view taken along the line VII-VII of FIG. 16, and
18 is a plan view of the reinforcing bar binding cap of the connector for rebar connection according to another embodiment of the present invention.

Specific details of embodiments of the present invention are included in the detailed description and the drawings.

Advantages and features of the present invention, and methods of achieving the same will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

Like reference numerals refer to like elements throughout. Embodiments described herein will be described with reference to ideal state diagrams, plan views, perspective views, and cross-sectional views of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the connector for connecting reinforcing bar according to an embodiment of the present invention and a method of coupling the reinforcing bar using the same.

First, the reinforcing bar connector according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 8.

1 is a state in which two reinforcing bars are connected using a reinforcing bar connector according to an embodiment of the present invention, FIG. 2 is a plan view of a casing which is a main part of the connector for reinforcing bar connection according to an embodiment of the present invention. 3 is an internal perspective view of FIG. 1, FIG. 4 is a cross-sectional view cut along the line IV-VI of FIG. 3, FIG. 5 is an exploded perspective view of FIG. 3, and FIG. 6 is a casing cut along the line VI-VI of FIG. 5. 7 is a cross-sectional view of the reinforcing bar binding cap shown along the line VII-VII of FIG. 5, and FIG. 8 is a plan view of the reinforcing bar binding cap shown in FIG. 5.

As shown in FIGS. 1 to 8, the connector 1 for rebar connection according to an embodiment of the present invention includes a casing 10, a rebar binding cap 20, and a fastening bolt 30.

The casing 10 is provided with a cylindrical shape as a whole by mechanical processing after casting using a metal material having a predetermined strength, and receives and fixes the reinforcing bars 5 and the reinforcing bar cap 20 from both ends in the longitudinal direction, respectively. The reinforcing bar and the binding cap receiving groove 14 include a side wall 11 formed therein and a supporting wall 12 closing the inner central portion of the side wall 11.

As shown in FIG. 6, the side wall 11 is in contact with the side half of the reinforcing bar 5 accommodated by the pressurization of the fastening bolt 30 when receiving and coupling the reinforcing bar 5 as shown in FIG. 6. A second inner diameter larger than the first inner diameter R1 so as to secure a space for accommodating the reinforcing bar 20 to be described later; It is provided to have (R2).

The separation preventing protrusion 16 is formed obliquely at a predetermined angle in the receiving coupling direction of the reinforcing bar 5, so that the receiving bar does not interfere with the coupling when receiving the reinforcing bar 5, but the receiving reinforcing bar 5 is received by a tensile load or the like. In the case of moving in the direction opposite to the receiving engagement direction, by restricting the movement, the coupling force with the reinforcing bar 5 of the connector 1 is increased and the separation of the reinforcing bar 5 is prevented.

Meanwhile, as shown in FIGS. 2 and 6, a portion of the central portion of the sidewall 11 is formed with a bolt fastening hole 18 having a thread formed therein and vertically penetrating the outside and the second inner diameter R2.

The support wall 12 is provided in the direction perpendicular to the inside of the center from the side wall so as to close the inside of the center of the side wall 11. The support wall 12 limits the receiving depths of the two reinforcing bars 5 and the reinforcing bar binding caps 20, respectively, which are received to be opposed to each other along the longitudinal direction of the reinforcing bar and the binding cap receiving grooves 14, and (5, 20). ) And serves as a rib to increase the strength of the casing 10 itself.

Reinforcing bar binding cap 20 is provided as a semi-cylindrical shape as a whole through mechanical processing after casting using a metal material having a predetermined strength, as shown in Figure 5 and 7, the second inner diameter (R2) of the casing (10) The third inner diameter (R3) is received and coupled to the other side, contacting the other side half of the reinforcing bar (5) received by the pressing of the fastening bolt 30 when the receiving connection of the reinforcing bar (5) is formed and the departure prevention projections (26) It is provided with a body portion 21 having a).

The anti-separation protrusion 26 is also formed obliquely at a predetermined angle in the receiving engagement direction of the reinforcing bar 5, so that the rebar 5 does not interfere with the receiving when the rebar 5 is received. In the case of moving in the direction opposite to the receiving engagement direction, by restricting the movement, the coupling force with the reinforcing bar 5 of the connector 1 together with the anti-separation protrusion 16 of the casing 10 is increased and the rebar 5 is separated. To prevent.

Meanwhile, as shown in FIG. 8, a bolt receiving groove 22 having a diameter D1 corresponding to the bolt fastening hole 18 is formed at an outer circumferential predetermined position of the body portion 21, and one end of the bolt receiving groove is formed. The bolt engaging groove 24 having a width W1 smaller than the diameter D1 of the bolt receiving groove 22 extends along the lengthwise direction opposite to the support wall 12 and the other end thereof is connected to the 22. It is.

In addition, one end of the body portion 21 is provided with a depth checking means (T1), such as a scale, a projection or a depression as shown in Figure 5 is the body portion 21 accommodated in the reinforcing bars and binding cap receiving groove 14 The reception depth of the operator can be easily checked.

The fastening bolt 30 is provided to have a locking projection 34 having the same diameter as the thread naturally at the end by forming the body locking groove 33 through the front end of the thread 32 through processing.

The fastening bolt 30 is accommodated in the bolt fastening hole 18 and the bolt receiving groove 22 to a predetermined depth, the sliding receiving coupled to the locking projection 34 to be caught in the bolt locking groove 24, and then fully fastened to bind the rebar. The cap 20 is pressed in the direction of the received reinforcing bar 5 to strongly couple the reinforcing bar 5 together with the casing 10.

Since the reinforcing bar cap 20 is strongly coupled in a state in which the locking protrusion 34 of the fastening bolt 30 is accommodated in the bolt locking groove 24, the fastening bolt 30 and the reinforcing bar may be bound even when a predetermined tensile load is applied. Due to the coupling force between the caps 30, the coupling force of the rebar 5 may be prevented from being lowered or released.

Meanwhile, as shown in FIG. 4, the thread 32 of the fastening bolt 30 is provided with a depth checking means T2 such as a scale, a protrusion, or a depression, such that the bolt fastening hole 18 and the bolt receiving groove 22 are provided. The worker can easily check the receiving depth of the fastening bolt 30 accommodated in the.

Hereinafter, with reference to FIGS. 9 to 17 with reference to the method of connecting the reinforcing bars using the reinforcing bar connector according to an embodiment of the present invention.

9 is a state in which the reinforcing bar binding cap is partially accommodated into the casing of the reinforcing bar connector according to an embodiment of the present invention. FIG. 10 is a cross-sectional view taken along the line VII-VII of FIG. 9, and FIG. A state diagram in which the connecting bolt is partially accommodated and coupled to the casing and the reinforcing bar binding cap of FIG. 9, FIG. 12 is a cross-sectional view taken along the line II-XII of FIG. 11, and FIG. 13 is a position of the reinforcing bar binding cap and connecting bolt of FIG. 11. Front view showing the relationship, FIG. 14 is a state in which the reinforcing bar binding cap containing the connecting bolt of FIG. 12 is completely received and coupled inside the casing, and FIG. 15 is a changed position of the reinforcing bar binding cap and the connecting bolt of FIG. A front view showing the relationship, FIG. 16 is a state diagram in which the reinforcing bars are housed in the casing of FIG. 14, and FIG. 17 is a cross-sectional view taken along the line VIII-VIII of FIG. 16.

As shown in FIGS. 9 and 10, an operator first uses two reinforcing bar binding caps 20 to depth-receiving means T1 at a second inner diameter R2 of a casing 10, and to receive a bolt receiving groove 22. It accommodates and engages as much as the depth communicated with this bolt fastening hole 18.

Then, as shown in FIGS. 11 to 13, the two reinforcing bolts 30 are respectively attached to the bolt fastening holes 18 and the bolt accommodating grooves 22 by using the depth checking means T2. It is coupled to the casing 10 and the reinforcing bar binding cap 20 to a coupling depth that does not interfere with the receiving coupling operation. That is, the inner diameter of the virtual connector 1, which is made by the first inner diameter R1 and the third inner diameter R3 at the time of this coupling, may be used before the pressing of the rebar 5 by the fastening bolt 30. Since it is larger than the diameter, it does not interfere with the receiving coupling operation of the reinforcing bar 5.

Then, as illustrated in FIGS. 14 and 15, the reinforcing bar binding cap 20 is slidably coupled to the supporting wall 12 in the direction of the dotted arrow so as to be completely received inside the reinforcing bar and the binding cap receiving groove 14. Accordingly, the locking projection 34 is moved from the bolt receiving groove 22 to the bolt locking groove 24 through the sliding movement of the reinforcing bar binding cap 20, so that the locking protrusion 34 is firmly caught in the bolt locking groove 24 so that the reinforcing bars 5 ) And the connector 1 when the coupling force is further inhibited structure is made.

Thereafter, as shown in FIGS. 16 and 17, two reinforcing bars 5 are completely received and coupled to the inner diameter of the virtual connector 1 made by the first inner diameter R1 and the third inner diameter R3, respectively. When the fastening bolt 30 is pressed to the end as shown in FIGS. 3 and 4, the inner diameter of the virtual connector 1 made by the first inner diameter R1 and the third inner diameter R3 gradually decreases and the rebar Two reinforcing bars (5) while being equal to or smaller than the diameter of (5) so that the departure preventing protrusions 16 and 26 are bitten by the reinforcing protrusions 6 or the sides made of the ribs 6a or the nodes 6b of the reinforcing bars 5. ) Is strongly coupled by the connector (1).

Thus, according to the connector 1 for reinforcing bar connection according to an embodiment of the present invention, the configuration is very simple and easy to manufacture and assemble, as well as the connection work with the reinforcing bar 5 is not a forced fit method naturally Since it is easy to pressurize using the fastening bolt 30 after joining, the connection work is very easy and simple, so the reinforcing bar work efficiency is excellent, and even if an impact is applied to the connected bar (5) and the connector (1) by a tensile load, etc. Having a coupling structure of the bolt locking groove 24 and the hooking protrusion 34, which is a structure for preventing the binding force, has an advantageous effect of preventing the coupling force from being inhibited or separated from the reinforcing bar 5 and the connector 1.

Hereinafter, the reinforcing bar connector according to another embodiment of the present invention will be described in detail with reference to FIG. 18 based on the difference from the reinforcing bar connector according to an embodiment of the present invention.

18 is a plan view of the reinforcing bar binding cap of the connector for rebar connection according to another embodiment of the present invention.

Reinforcing bar connection connector according to another embodiment of the present invention, as shown in Figure 18, the reinforcing bar binding cap (20a) on the other side of the bolt locking groove 24 relative to the bolt receiving groove 22, the additional bolt locking groove Except that 25 is further formed, it is the same as the connector for rebar connection 2 according to another embodiment of the present invention.

The connector for reinforcing bars according to another embodiment of the present invention has a bolt engaging groove 24 as shown by a dotted arrow by the flow of the reinforcing bar binding cap 20a when the reinforcing bar 5 is accommodated and connected thereto and is subjected to excessive tensile load. Even if the locking projections 34 accommodated in the shaft are separated and moved in the direction of the solid line, the additional bolt locking grooves 25 are caught again so that the fastening bolts 30 do not fall out through the bolt fastening holes 18 so that the rebar 5 and Prevents a decrease in the binding force and the detachment of the reinforcing bar (5).

In the above-described embodiment, the connector for reinforcing bars according to the present invention has been described only with a straight cylindrical structure having both ends open in the longitudinal direction, but is not limited thereto. The " + " Of course, it is possible to expand and change the shape to a shape that is open in six directions in three dimensions.

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

1: Connector for reinforcing bar 5: Reinforcing bar
6: rebar protrusion 10: casing
11 side wall 12 support wall
14: rebar and binding cap receiving groove 16, 26: departure prevention protrusion
18: bolt fastening hole 20, 20a: rebar binding cap
21: body 22: bolt receiving groove
24, 25: bolt locking groove 30: fastening bolt
32: thread 33: body engaging groove
34: jamming projection

Claims (7)

Receiving a plurality of reinforcing bars from the end in the longitudinal direction, respectively, a portion of the inner circumference has a first inner diameter in contact with a portion of the side of the reinforcement by pressure when receiving the reinforcing coupling of the reinforcing bars, the other part of the inner circumference The casing is formed to have a second inner diameter larger than the inner diameter, and formed with at least one bolt fastening hole penetrating the outside and the second inner diameter,
A bolt that is received and coupled to the second inner diameter of the casing and whose inner circumference has a third inner diameter contacting a part of the other side of the reinforcement by pressurizing when receiving the reinforcing bar of the reinforcing bar; A reinforcing bar binding cap having a receiving groove formed therein, and
A fastening bolt fastened to the bolt fastening hole and the bolt receiving groove to provide a bonding force between the reinforcing bars and the casing and the reinforcing bar binding cap by pressure;
Containing
Connector for rebar connection. In claim 1,
The casing
A side wall on which the bolt fastening hole is formed, and
A support wall for limiting and supporting a receiving depth of the reinforcing bars and the reinforcing bar binding cap by closing the inside of the central portion of the side wall;
Containing
Connector for rebar connection. In claim 1,
The fastening bolt
Hanging protrusion formed at the end
More,
The reinforcing bar binding cap
At least one bolt locking groove is provided to have a width smaller than the diameter of the bolt receiving groove, one end is connected to the bolt receiving groove along the longitudinal direction, and is formed to be engaged by sliding receiving the engaging projection in the longitudinal direction.
Further comprising
Connector for rebar connection. The method of claim 1,
The reinforcing bar binding cap
Further comprising depth checking means for confirming the depth accommodated in the casing
Connector for rebar connection. In claim 1,
The fastening bolt
Further comprising depth checking means for confirming the depth accommodated in the casing
Connector for rebar connection. In claim 1,
The casing
The first separation prevention projections are further formed in the first inner diameter
Connector for rebar connection. The method of claim 6,
The reinforcing bar binding cap
The second separation prevention projections are further formed in the third inner diameter
Connector for rebar connection.

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