KR20230153729A - Cap coupler and steel rebar connector having it - Google Patents

Abstract

The present invention constitutes a reinforcing bar joint member connecting a pair of reinforcing bars, and is a cap coupler provided inside a pair of housings that are fastened to each other and fixing the end of the reinforcing bar inserted into the interior of the housing for connection. a ring-shaped member whose one side is in contact with and seated on a step formed inside one of the housings, and whose other side, which is opposite to the one side, is pressed and fixed by an end of the other housing; Fixing members each extending for a predetermined length along the thickness direction of the ring-shaped member on one side and the other side of the ring-shaped member are formed into a cylindrical shape and have a hollow in the center into which the end of the reinforcing bar is inserted; By providing a cap coupler that includes a cap coupler, it is possible to connect the reinforcing bars required for the reinforcement work of various architectural and civil engineering structures in a one-touch method, and also improves the connection strength of the interconnected reinforcing bars by firmly fixing the ends of the reinforcing bars. This can improve the reliability of the product.

Description

Cap coupler and rebar joint member equipped with same {CAP COUPLER AND STEEL REBAR CONNECTOR HAVING IT}

The present invention relates to a cap coupler and a rebar joint member equipped with the same, and more specifically, to a cap coupler and a rebar joint member that connect rebar required for reinforcement work in various buildings.

In order to supplement the physical properties of concrete with low tensile strength, a large number of reinforcing bars are placed inside various architectural and civil structures when concrete is poured.

When connecting rebar during the construction process, inconveniences such as welding can be eliminated by using a rebar coupler.

The rebar coupler functions to firmly connect the ends of two rebars without overlapping them.

These rebar couplers include a screw-type coupler that connects rebar by screwing it together, a compression-type coupler that connects by pressing and fixing the rebar using the joints of the rebar, and a one-touch coupler that connects by fixing and wedge-type using the joints of the rebar. It can be divided into:

The one-touch coupler allows connection of rebar without any special tools.

For example, Patent Document 1 and Patent Document 2 below disclose reinforcing bar coupler technology according to the prior art.

Patent Document 1 provides an insertion hole into which two reinforcing bars are inserted inside the body, installs a diaphragm and a plurality of steel bars inside the insertion hole to fix the two reinforcing bars, and connects each end of the body with a stopper to attach the steel bars to the steel bars. The configuration of the rebar coupler that secures is described.

In Patent Document 2, the number of collet members is selected according to the diameter of the reinforcing bar to be inserted, and the plurality of selected collet members are composed of a set and seated on the upper part of the collet support plate, and the reinforcing bar is a connecting member disposed in the middle of the opposing collet support plate. A one-touch type rebar coupler configuration that is seated in and prevents defects during rebar placement work is described.

However, since the rebar coupler according to the prior art is structured to fix only one side of the outer surface of the rebar inserted inside, the rebar inserted into the rebar coupler flows and as a result, the connection strength between the rebar is weakened, so the rebar coupler product There is a problem that the reliability of .

Patent Document 1: Republic of Korea Patent Publication No. 10-2020-0119963 (published on October 21, 2020) Patent Document 2: Republic of Korea Patent Registration No. 10-2203490 (announced on January 14, 2021)

The purpose of the present invention, which was devised in consideration of the above points, is to solve the above-mentioned problems, and to enable one-touch connection of reinforcing bars required for the placement work of various architectural and civil engineering structures, as well as to connect the ends of the reinforcing bars. The aim is to provide a cap coupler that can improve the reliability of the product by firmly fixing it and improving the connection strength of the interconnected reinforcing bars, and a reinforcing bar joint member equipped with the cap coupler.

The cap coupler for achieving the purpose of the present invention as described above constitutes a reinforcing bar joint member connecting a pair of reinforcing bars, and is provided inside a pair of housings disposed opposite to each other and flows into the inside of the housing for connection. A cap coupler that secures the end of the reinforcing bar to be inserted, one side of which is seated in contact with a step formed inside one of the housings, and the other side opposite to the one side is pressed by the end of the other housing. A ring-shaped member that is fixed and fixed; Fixing members each extending for a predetermined length along the thickness direction of the ring-shaped member on one side and the other side of the ring-shaped member are formed into a cylindrical shape and have a hollow in the center into which the end of the reinforcing bar is inserted; It is characterized by including.

Here, the inner surface of the fixing member forming the hollow side surface is preferably tapered so that the diameter gradually expands toward the end.

In addition, when inserting the reinforcing bar, an interference prevention groove may be provided around the inner surface of the fixing member, which is in contact with the end side of the reinforcing bar, and is recessed inward to prevent mutual interference between the reinforcing bar and the inner surface of the fixing member. there is.

In addition, the ring-shaped member is provided at an eccentric position on one side of the outer surface of the fixing member, and in the central area of the inner surface of the fixing member, the reinforcing bars have ends so that the reinforcing bars inserted from both sides can be inserted only up to the center of the housing. It is effective to have a protruding protruding protrusion that allows the device to be caught.

In addition, the end of the fixing member has a guide surface that guides the movement of the rebar so that the rebar moves with the center of the rebar aligned with the center of the fixing member when the rebar is inserted into the hollow. It may be formed to slope downward toward the center.

A reinforcing bar joint member equipped with a cap coupler for achieving the object of the present invention as described above includes a pair of housings formed in a cylindrical shape, arranged to face each other, with openings at both ends and a hollow inside; A pair of elastic cut surfaces each slidably coupled to the inside of a pair of housing ends and formed with a plurality of elastic cut surfaces spaced apart from each other at regular intervals along the circumferential direction to support a portion of the side of the reinforcing bar inserted into the housing. a support member; the cap coupler; It is characterized by including.

Here, the end regions of the pair of housings are tapered so that the diameter gradually decreases toward the ends, the outer surface of the support member is also tapered to correspond to the inner surface of the housing, and the cap coupler constituting the cap coupler is formed. An elastic member may be installed between the fixing member and the support member to press the support member outward.

In addition, a plurality of toothed members disposed along the height direction of the support member and extending along the circumferential direction may be protruded on the inner surface of the support member to firmly support the reinforcing bar.

In addition, as the housings are coupled to each other, the ring-shaped member of the cap coupler is fixed between the housings, thereby allowing the cap coupler to be fixed.

In addition, a screw thread is formed on the outer surface of the cap coupler, and a screw thread fastened to the screw thread is formed on the inner surface of the housing, so that the housing is fastened to the outer surface of the cap coupler, thereby allowing the cap coupler to be fixed.

As discussed above, the cap coupler according to the present invention and the reinforcing bar joint member equipped with the same enable one-touch connection of reinforcing bars required for the reinforcement work of various building and civil engineering structures, and also firmly fix the ends of the reinforcing bars. It has the effect of improving the reliability of the product by improving the connection strength of the connected rebar.

1 is a perspective view showing the structure of a cap coupler according to an embodiment of the present invention,
Figure 2 is a longitudinal cross-sectional view showing the structure of the cap coupler of Figure 1;
Figure 3 is a perspective view showing the structure of a rebar joint member equipped with a cap coupler according to an embodiment of the present invention;
Figure 4 is an exploded perspective view showing the structure of a rebar joint member equipped with a cap coupler according to an embodiment of the present invention;
Figure 5 is a longitudinal cross-sectional view showing the structure of a rebar joint member equipped with a cap coupler according to an embodiment of the present invention;
Figure 6 is a longitudinal cross-sectional view showing another structure of a rebar joint member equipped with a cap coupler according to an embodiment of the present invention;
Figure 7 is an exploded perspective view showing the structure of a rebar joint member equipped with a cap coupler according to another embodiment of the present invention;
FIG. 8 is a longitudinal cross-sectional view showing the structure of the cap coupler of FIG. 7.

Hereinafter, a cap coupler according to an embodiment of the present invention will be described in more detail with reference to the attached drawings.

FIG. 1 is a perspective view showing the structure of a cap coupler according to an embodiment of the present invention, FIG. 2 is a longitudinal cross-sectional view showing the structure of the cap coupler of FIG. 1, and FIG. 3 is a cap coupler according to an embodiment of the present invention. It is a perspective view showing the structure of a reinforcing bar joint member provided with a, Figure 4 is an exploded perspective view showing the structure of a reinforcing bar joint member equipped with a cap coupler according to an embodiment of the present invention, and Figure 5 is an exploded perspective view of the structure of a reinforcing bar joint member provided with a cap coupler according to an embodiment of the present invention. It is a longitudinal cross-sectional view showing the structure of a rebar joint member equipped with a cap coupler according to an embodiment of the present invention, and Figure 6 is a longitudinal cross-sectional view showing another structure of a rebar joint member equipped with a cap coupler according to an embodiment of the present invention. , FIG. 7 is an exploded perspective view showing the structure of a rebar joint member equipped with a cap coupler according to another embodiment of the present invention, and FIG. 8 is a longitudinal cross-sectional view showing the structure of the cap coupler of FIG. 7.

As shown in these drawings, the cap coupler according to the present invention constitutes a reinforcing bar joint member connecting a pair of reinforcing bars 1, and is provided inside a pair of housings 200 that are fastened to each other for connection. A cap coupler (100) that secures the end of the reinforcing bar (1) inserted into the housing, one side of which is seated in contact with a step formed inside one of the housing (200), and the opposite side of the one side. a ring-shaped member 110 whose other side is pressed and fixed by the end of the other housing 200; On the one side and the other side of the ring-shaped member 110, each extends a certain length along the thickness direction of the ring-shaped member 110 to form a cylindrical shape, and a hollow hole ( A fixing member 120 formed with 121); It consists of:

First, the cap coupler 100 constitutes a reinforcing bar joint member that connects a pair of reinforcing bars 1, and is provided inside a pair of housings 200 that are fastened to each other and is inserted into the housing for connection. It is a member that serves to fix the end of the reinforcing bar (1).

This cap coupler 100 largely consists of a pair of housings 200, a ring-shaped member 110 fastened between the housings 200, and a fixing member 120 that extends a certain length integrally with the ring-shaped member 110. Consists of.

The ring-shaped member 110 is a member formed in a ring shape, and a hollow is formed inside, so that the reinforcing bar 1 passes through the hollow, and the end of the reinforcing bar 1 is inserted into the hollow 121 formed in the fixing member 120, thereby forming a hollow space inside the ring-shaped member 110. The end of the connected reinforcing bar (1) is fixed so that it can be supported.

The ring-shaped member 110 is formed to protrude at regular intervals along the width direction of the fixing member 120, and the upper and lower surfaces are formed to be flat and are fastened between a pair of housings 200 that are screwed to each other, thereby forming the housing 200. Make sure it can be fixed inside.

This ring-shaped member 110 is provided at an eccentric position on one side of the outer surface of the fixing member 120, so that the ring-shaped member 110 is fixed between the housing 200 and a pair of housings 200 that are coupled to each other. In this case, the housings 200 are completely fastened to each other so that the ring-shaped member 110 can be firmly fixed.

The fixing member 120 is formed in a cylindrical shape by extending in both directions for a certain length along the thickness direction of the ring-shaped member 110 on one side and the other side of the ring-shaped member 110, and the end of the reinforcing bar 1 is inserted in the center. It is a member in which a hollow 121 is formed.

The fixing member 120 is formed integrally with the ring-shaped member 110, so that the ring-shaped member 110 is fixed between the pair of housings 200 and the housing 200, and is consequently arranged to be fixed inside the housing 200. do.

And, as shown in FIG. 5, the inner surface of the fixing member 120 forming the side surface of the hollow 121 provided in the fixing member 120 is tapered so that the diameter gradually expands toward the end, thereby forming the reinforcing bar. It is effective to ensure that (1) can be easily inserted into the hollow 121.

In addition, when inserting the reinforcing bar (1), the inner surface of the fixing member (120), which is in contact with the end side of the reinforcing bar (1), is formed around the inner surface of the reinforcing bar (1) and the inner surface of the fixing member (120) to prevent mutual interference. The interference prevention groove 122 recessed in the shape is provided so that the reinforcing bar (1) can be completely inserted into the end of the hollow 121 formed in the fixing member 120, so that the reinforcing bar (1) can be completely inserted into the end of the hollow 121 formed in the fixing member 120. It is desirable to ensure that the ends can be firmly fixed.

In addition, the central area of the inner surface of the fixing member 120 has a protruding locking protrusion 130 that catches the ends of the reinforcing bars 1 so that the reinforcing bars 1 inserted from both sides can be inserted only up to the center of the housing 200. It is formed.

This locking protrusion 130 is formed in the central area of the inner surface of the fixing member 120, so that when the reinforcing bars 1 to be interconnected on both sides of the housing 200 are inserted into the housing 200, the housing 200 By allowing each pair of reinforcing bars (1) to be inserted up to the central area, there is an effect in that the connection strength of the reinforcing bars (1) can be balanced.

And, at the end of the fixing member 120, when the rebar 1 is inserted into the hollow 121, the rebar 1 moves with the center of the rebar 1 aligned with the center of the fixing member 120. The guide surface 123 that guides the movement of 1) is formed to be inclined downward toward the center of the fixing member 120.

A guide surface 123 that is inclined downward toward the center of the fixing member 120 is formed at the end of the fixing member 120, so that when the rebar 1 is inserted into the housing 200, the rebar 1 and the initial The end of the fixing member 120 that is in contact is guided toward the center of the fixing member 120, which has the effect of allowing the insertion of the reinforcing bar 1 easily and quickly.

A part of the end of the elastic member 400, which will be described later, is inserted into the outer surface of this fixing member 120 to prevent the elastic member 400 from being separated, and the elastic member 400 is attached to the knitted body constituting the support member 300. ) It is desirable to transmit the elasticity uniformly so that each piece receives a certain elasticity and maintain the same pressure angle applied to the reinforcing bar (1).

The cap coupler 100 having the above-described configuration is composed of a single body joint in which the end of the reinforcing bar 1 is press-fitted to maximize the shaking prevention function of the reinforcing bar, and is manufactured as a single body by injection molding or It can be manufactured as a single body through metal material processing.

Meanwhile, Figure 6 is a longitudinal cross-sectional view showing another structure of a rebar joint member equipped with a cap coupler according to an embodiment of the present invention.

As shown in FIG. 6, the inner surface of the fixing member 520, which forms the side surface of the hollow 521 provided in the fixing member 520, may have an overall shape tapered toward the end.

In the case of this structure, even if the diameter of the reinforcing bar (1) inserted into the hollow 521 of the fixing member 520 for interconnection is slightly larger, insertion is possible because the diameter of the entrance side of the hollow 521 is sufficient. , When inserted into the hollow 521, the end of the reinforcing bar 1 is tightly engaged with the fixing member 520, which has the effect of enabling firm fixation.

On the other hand, a reinforcing bar joint member equipped with a cap coupler according to an embodiment of the present invention includes a pair of housings 200 formed in a cylindrical shape, which are mutually coupled with openings at both ends and a hollow 210 formed therein; A plurality of pairs of units each slidably coupled to the inside of an end portion of the housing 200 and disposed at regular intervals along the circumferential direction to support a portion of the side of the reinforcing bar 1 inserted into the housing 200. A pair of support members 300 having elastic cut surfaces of; It is configured to include the cap coupler 100.

In explaining the reinforcing bar joint member equipped with a cap coupler according to an embodiment of the present invention, the cap coupler 100 has the same configuration as described above, and therefore the description thereof is omitted to clarify the gist of the invention. I decided to do it.

The housing 200 has openings at both ends and a hollow 210 is formed therein and is fastened to each other. It is provided as a pair formed in a cylindrical shape and fastened to each other, so that a pair of reinforcing bars 1 to be connected can be connected. .

The end regions of the pair of housings 200 are tapered so that the diameter gradually decreases toward the ends, so that the support members 300 provided at both inner ends of the housing 200 are pressed toward both ends of the housing 200. It is desirable that the spacing between the elastic cut surfaces formed in the support member 300 becomes closer as it moves so that the reinforcing bar 1 can be supported more firmly.

The support member 300 is spherical with a plurality of pieces arranged at regular intervals along the circumferential direction to support a portion of the side of the reinforcing bar 1 inserted into the housing 200, and an elastic incision is made between the pieces. It is a pair of members formed with a surface and disposed on both sides of the housing 200, respectively.

The outer surface of the support member 300 is tapered to correspond to the inner surface of the housing 200, so that the more the support member 300 is pressed and moved from the inside of the housing 200 toward the end of the housing 200, the more the elastic incision occurs. The spacing between the surfaces is made tight so that the support member 300 can more firmly support the outer surface of the reinforcing bar (1).

In addition, on the inner surface of the support member 300, a plurality of toothed members 310 are protruding and disposed along the height direction of the support member 300 and extending along the circumferential direction to firmly support the reinforcing bar 1. It is desirable.

A sea ring 320 is provided on the inner surface of the support member 300, so that when the reinforcing bar 1 is initially inserted into the housing 200, the support member 300 is pushed toward the inside of the housing 200 to spread, thereby forming the reinforcing bar ( 1) serves to facilitate easy insertion into the interior of the support member 300.

An elastic member 400 is installed between the fixing member 120 and the support member 300 constituting the cap coupler 100 to press the support member 300 outward so that the support member 300 is attached to the housing 100. It is effective to firmly support the reinforcing bar (1) by allowing it to move as much as possible to both ends of the housing (100) inside.

Meanwhile, Figure 7 is an exploded perspective view showing the structure of a rebar joint member equipped with a cap coupler according to another embodiment of the present invention, and Figure 8 is a longitudinal cross-sectional view showing the structure of the cap coupler of Figure 7.

In describing the cap coupler and the rebar joint member provided with the cap coupler according to another embodiment of the present invention, the same parts as the structure of the cap coupler and the rebar joint member provided with the cap coupler according to one embodiment of the present invention are discussed. In order to clarify the gist, detailed description thereof will be omitted.

As shown in Figures 7 and 8, the cap coupler according to another embodiment of the present invention has a pair of housings 200 of the cap coupler 500 so that they can be directly fastened to the outer surface of the cap coupler 500. A screw thread 510 is formed on the outer surface.

Therefore, the housing 200 of the reinforcing bar joint member equipped with a cap coupler according to another embodiment of the present invention does not need to be provided with a fastening area for mutual fastening, but the cap coupler 500 is provided on the inner surface of the housing 200. Any configuration in which a screw thread is engaged and fastened with a screw thread 510 formed on the outer surface may be formed.

Here, reference numeral 523 indicates a guide surface, and 530 indicates a stopping step.

The process of connecting a pair of reinforcing bars using a reinforcing bar joint member equipped with a cap coupler according to an embodiment of the present invention having the configuration described above will be described as follows.

First, both ends of the reinforcing bars (1) to be interconnected are initially inserted into the interior of the housing (200) so that both ends of the reinforcing bars (1) can be inserted into the interior of the housing (200) through the openings on both sides of the housing (200). do.

After both ends of the reinforcing bar (1) are initially inserted into the interior of the housing (200), when the reinforcing bar (1) is further pushed into the interior of the housing (200), the friction force between the outer surface of the reinforcing bar (1) and the inner surface of the support member (300) As a result, the support member 300 is slightly pushed toward the inside of the housing 200 to a certain degree, so that the elastic cut surface formed on the support member 300 opens, allowing the reinforcing bar (1) to be inserted.

Thereafter, when the insertion operation of the reinforcing bar 1 progresses further, the end of the reinforcing bar 1 is inserted into the hollow 121 formed inside the fixing member 120, and as a result, the end of the reinforcing bar 1 is inserted into the fixing member 120. ) is fixed by.

In this state, the support member 300 is pressed from the inside of the housing 200 toward the end of the housing 200 by the elastic member 400, so that the support member 300 is pressed by the tapered end region of the housing 200. Because the elastic cut surface formed in becomes denser, the support member 300 firmly supports the outer surface of the reinforcing bar (1).

In addition, since the end of the reinforcing bar 1 is inserted into the fixing member 120 and fixedly arranged, it is possible to ensure that the reinforcing bar 1 is accurately fixed without moving when inserted into the housing 200. It becomes a state.

When another reinforcing bar (1) is inserted through the opening surface opened on the opposite side of the housing 200 through the above-described process, the reinforcing bar (1) is fixed in the same way by the above-described process, resulting in a pair of reinforcing bars (1) ) connection is completed.

The cap coupler according to an embodiment of the present invention having the above-described configuration enables one-touch connection of reinforcing bars required for the placement work of various architectural and civil engineering structures, and also connects the reinforcing bars by firmly fixing the ends of the reinforcing bars. By improving the connection strength of the reinforcing bars, the reliability of the product can be improved.

Since the above is only a description of some of the preferred embodiments that can be implemented by the present invention, as is well known, the scope of the present invention should not be construed as limited to the above embodiments, and the scope of the present invention described above Both the technical idea and the technical idea underlying it will be said to be included in the scope of the present invention.

100: cap coupler 110: ring-shaped member
120: fixing member 121: hollow
122: Interference prevention groove 123: Guide surface
130: Locking protrusion 200: Housing
210: hollow 300: support member
310: sawtooth 400: elastic member
500: Fixing member 510: Screw thread
520: Fixing member 521: Hollow
523: Guide surface 530: Locking protrusion

Claims (10)

It constitutes a reinforcing bar joint member connecting a pair of reinforcing bars (1), and is provided inside a pair of housings (200) arranged to face each other, and the end of the reinforcing bars (1) is inserted into the interior of the housing for connection. As a cap coupler 100 that secures,
A ring-shaped member 110 whose one side is in contact with and seated on a step formed inside one of the housings 200, and whose other side, which is opposite to the one side, is pressed and fixed by the end of the other housing 200. )and;
On the one side and the other side of the ring-shaped member 110, each extends a certain length along the thickness direction of the ring-shaped member 110 to form a cylindrical shape, and a hollow hole ( A fixing member 120 formed with 121);
A cap coupler characterized by the inclusion of a cap coupler. According to paragraph 1,
A cap coupler, characterized in that the inner surface of the fixing member 120 forming the side of the hollow 121 is tapered so that the diameter gradually expands toward the end. According to paragraph 1,
When inserting the reinforcing bar (1), there is a circumference of the inner surface of the fixing member (120) that is in contact with the end side of the reinforcing bar (1) to prevent the reinforcing bar (1) and the inner surface of the fixing member (120) from interfering with each other. A cap coupler, characterized in that it is provided with an interference prevention groove (122) recessed on the inside so as to be used. According to paragraph 1,
The ring-shaped member 110 is provided at an eccentric position on one side of the outer surface of the fixing member 120, and the reinforcing bars 1 inserted from both sides are placed in the central area of the inner surface of the fixing member 120, respectively, in the housing 200. ) A cap coupler, characterized in that a locking protrusion 130 is formed to protrude so that the end of the reinforcing bar (1) can be inserted so that it can be inserted only up to the center of the cap coupler. According to paragraph 1,
At the end of the fixing member 120, when the reinforcing bar 1 is inserted into the hollow 121, the reinforcing bar 1 is aligned with the center of the reinforcing bar 1 and the center of the fixing member 120. A cap coupler, characterized in that the guide surface 123 that guides the movement of the reinforcing bar (1) is formed to be inclined downward toward the center of the fixing member (120). A pair of housings 200 having openings at both ends and a hollow 210 formed therein, arranged to face each other, and having a cylindrical shape;
A plurality of pairs of units each slidably coupled to the inside of an end portion of the housing 200 and disposed at regular intervals along the circumferential direction to support a portion of the side of the reinforcing bar 1 inserted into the housing 200. A pair of support members 300 having elastic cut surfaces of;
A cap coupler (100) according to any one of claims 1 to 5;
A rebar joint member equipped with a cap coupler, characterized in that it includes. According to clause 6,
The end regions of the pair of housings 200 are tapered so that the diameter gradually decreases toward the ends, and the outer surface of the support member 300 is also tapered to correspond to the inner surface of the housing 200, A cap coupler, characterized in that an elastic member 400 is installed between the fixing member 120 and the support member 300 constituting the cap coupler 100 and presses the support member 300 outward. A rebar joint member provided with. According to clause 6,
On the inner surface of the support member 300, a plurality of toothed members 310 are disposed along the height direction of the support member 300 and extend along the circumferential direction to firmly support the reinforcing bar 1. A rebar joint member equipped with a cap coupler, characterized in that. According to clause 6,
A rebar joint member with a cap coupler, wherein the cap coupler is fixed by fixing the ring-shaped member of the cap coupler between the housings as the housings are coupled to each other. According to clause 6,
A screw thread is formed on the outer surface of the cap coupler, and a screw thread fastened to the screw thread is formed on the inner surface of the housing, so that the housing is fastened to the outer surface of the cap coupler, thereby fixing the cap coupler. One rebar joint member.

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