KR101643846B1 - One-touch type steel reinforcing coupler - Google Patents
One-touch type steel reinforcing coupler Download PDFInfo
- Publication number
- KR101643846B1 KR101643846B1 KR1020150071445A KR20150071445A KR101643846B1 KR 101643846 B1 KR101643846 B1 KR 101643846B1 KR 1020150071445 A KR1020150071445 A KR 1020150071445A KR 20150071445 A KR20150071445 A KR 20150071445A KR 101643846 B1 KR101643846 B1 KR 101643846B1
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- KR
- South Korea
- Prior art keywords
- coupler
- axial direction
- spring
- coupler body
- bodies
- Prior art date
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
- E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
- E04C5/165—Coaxial connection by means of sleeves
Abstract
Description
The present invention relates to a one-touch type automatic reinforcing coupler, and more particularly, to a reinforcing coupler capable of easily fastening a pair of reinforcing bars by a one-touch method at the time of construction site assembly.
Reinforcing bars used in reinforced concrete structures must be joined at regular lengths due to the limit of production length or the limit of construction method.
Generally, the joining method of reinforcing bars can be divided into lap joints that transfer the stresses of the reinforcing bars to the concrete around the reinforcing bars and gas pressure joints and mechanical joints that directly transmit the stresses of the reinforcing bars.
Overlap joints are the most commonly used joints in the conventional method, in which reinforcing bars and reinforcing bars are overlapped to a certain length so that they can be joined through the adhesive force with concrete. However, the larger the diameter of the reinforcing bars, , Reinforced concrete members (pillars, beams) are applied on the basis of the thickness and the spacing of reinforcing bars. Therefore, 'reinforcing bars exceeding D35 should not be overlapped in concrete structure design standards'. . In addition, it is not easy to ensure proper spacing of reinforcing bars in lap joints, which may cause problems in the filling of concrete. Further, loss occurs at the overlapping joint portion, and there is also a problem that it is difficult to manage the construction with respect to the deterioration of the strength due to the section defect and the joint length.
In addition, welded joints have a short protrusion length of reinforcing bars and can be connected even in a narrow place. The arc-stud welding time is minimized, but interference between adjacent reinforcing bars occurs due to the welding position, Over time, fluctuations in construction quality due to climate, the need for skilled craftsmen, and the possibility of a strike-slip mechanism in the event of an earthquake.
On the other hand, mechanical joint is a method of joining reinforcing bars that can resist tensile force irrespective of the adhesive strength of concrete by connecting the two reinforcing bars using an intermediate member (coupler). Depending on the method and type of joint, it can be classified into screw type, steel pipe compression type, wedge type, and mortar type, and the use thereof is continuously increasing. Although the strength of the joint is stable and unaffected by the worker's skill and weather, it is very small in the joint due to the limitations of the connection method, but slip may occur and it is most disadvantageous in terms of economy compared to the gas pressure point .
In addition, the threaded coupler method, which occupies most of the mechanical joints, is structurally problematic due to a fine clearance between the threads, which is inevitably existed because the female thread type and the male thread type are combined. Such minute clearances may cause a loosening phenomenon if momentary large loads or repetitive loads such as earthquakes are applied, and the strength of the joints may be greatly reduced, which may have a fatal impact on the structure.
Most of the conventional reinforcing bars are structured by inserting reinforcing bars into the inside of the housing and then screwing the housing into a screw, which is complicated in structure and difficult to connect the reinforcing bars. have.
In order to solve such a problem, Korean Patent Registration No. 0439305 (registered on Jun. 28, 2004) discloses a hollow inner coupler which is open on both sides of which reinforcing bars are inserted so as to face each other and a hollow inner coupler which is slidably coupled to both sides of the outer surface of the inner coupler An outer coupler, a plurality of balls reciprocating between the inner coupler and the outer coupler to control the flow of the reinforcing bars, and an elastic spring elastically urged between the inner coupler and the outer coupler to generate a predetermined elastic force therebetween Quot; one-touch type reinforcing bar coupling device ". However, there is a high possibility that deformation of a reinforcing bar joint or loss of a ball may occur due to structural deformation or other external force, which makes it impossible to commercialize it.
Accordingly, an object of the present invention is to provide a one-touch type automatic reinforcing coupler that is simple in construction, light in weight, easy to carry, shortened in air, and manufactured economically.
Another problem to be solved by the present invention is to provide a one-touch automatic reinforcing coupler which is free from slip, loosening or residual deformation inside the fastener even if momentarily large and repetitive external force acts due to strong wind or earthquake load .
Another problem to be solved by the present invention is to provide a one-touch automatic reinforcing coupler that exhibits sufficient strength not to be broken first in a fastener even when the load reaches and is destroyed under an extreme load.
Another problem to be solved by the present invention is to design the reinforced concrete structure so that the thickness of the concrete of the reinforced concrete structure does not exceed the diameter of the cross-sectional area of the reinforcing steel, The present invention provides a one-touch automatic reinforcing coupler capable of satisfying the above requirements.
In order to solve these technical problems, a one-touch automatic reinforcing coupler according to a preferred embodiment of the present invention includes a hollow portion having both ends opened and a tapered portion formed at an upper end of the hollow portion so as to have an inner diameter larger toward the inner side in the axial direction A pair of coupler bodies, each of which is threaded; A plurality of ratchet protrusions, which are movable in an axial direction on the inside of the coupler body, have inclined surfaces corresponding to the tapered portions and O-ring receiving grooves formed on an outer surface thereof, A plurality of assemblies formed; An O-ring inserted into the O-ring receiving groove to closely contact the plurality of knobs in the axial direction; An inner spring connected to an inner surface of the plurality of jibs and having an upper end portion tightly adhered to the jibs by the O-ring and exerting an elastic force to push the incoming reinforcing bar from the inner side in an axial direction outward; An outer spring supported on a bottom surface of the plurality of plates to exert an elastic force to push the plates inward from the inner side in an axial direction; And a circular diaphragm disposed between the outer springs to prevent entanglement and interference between the outer springs.
The coupler body according to the present invention includes a hollow portion having both ends opened, a tapered portion formed at an upper end of the hollow portion so as to have an inner diameter larger toward the inner side in the axial direction from the outer side, A first coupler body having a male thread portion formed at a lower end thereof; A female screw portion formed on the inner side surface to be screwed with the male screw portion of the first coupler body at an upper end of the hollow portion; and a female screw portion extending from the female screw portion and having an inner diameter smaller toward the lower axial direction And a second coupler body having a tapered portion formed thereon.
It is further preferable that the inner diameter of the outer spring according to the present invention is larger than the outer diameter of the inner spring.
Preferably, the inner spring according to the present invention is manufactured without a pitch at an upper end which is in contact with the fixture.
As described above, according to the one-touch automatic reinforcing coupler of the present invention, it is possible to provide a one-touch automatic reinforcing coupler which is simple in construction, light in weight, easy to carry, have.
Further, according to the one-touch automatic reinforcing coupler of the present invention, it is possible to provide a reinforcing coupler capable of preventing slip, loosening or residual deformation.
In addition, according to the one-touch automatic reinforcing coupler of the present invention, a reinforcing coupler capable of reducing the cost in an economical shape while satisfying the mechanical properties required in the standard such as tensile strength can be provided.
Further, according to the one-touch automatic reinforcing coupler according to the present invention, it is possible to provide a reinforcing coupler which is one-touch type and can be easily fastened by anyone, even if not an expert.
In addition, according to the one-touch automatic reinforcing coupler of the present invention, there is an effect of providing a slim type reinforcing coupler that can satisfy the concrete covering thickness of the reinforced concrete structure.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view illustrating a shape of a one-touch automatic reinforcing coupler and a reinforcing bar according to a preferred embodiment of the present invention;
Fig. 2 is a sectional view of Fig. 1,
3 is an overall sectional view of a one-touch automatic reinforcing coupler according to the present invention,
4 is a cross-sectional view of the coupler body,
5 is a perspective view showing a state where the knob and the inner spring according to the present invention are engaged,
Fig. 6 is a sectional view of Fig. 5,
7 is an assembly view of a one-touch automatic reinforcing coupler according to the present invention, and Fig.
8 is a graph showing tensile strength test results of a one-touch automatic reinforcing coupler according to the present invention at the Korea Chemical Fusion Test Institute (May 25, 2015).
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter 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 the specification. The embodiments described herein will be described in detail with reference to the drawings of the present invention, such as a perspective view, an incision view, an assembly view and the like.
Hereinafter, a one-touch automatic reinforcing coupler according to an embodiment of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a schematic view illustrating a shape in which a reinforcing bar is inserted with a one-touch automatic reinforcing coupler according to a preferred embodiment of the present invention. FIG. 2 is a cutaway view of FIG. 1, Fig. 5 is a perspective view showing a state in which a coupling body and an inner spring are engaged with each other. Fig. 6 is a cross-sectional view of the coupler body, And FIG. 7 is an assembled view of the one-touch automatic reinforcing coupler according to the present invention, respectively.
The one-touch automatic reinforcing coupler according to the preferred embodiment of the present invention includes a pair of
First, the pair of
The
In addition, the
Referring to FIGS. 5 and 6, the
When the
In addition, an O-
5 and 6, the O-
The
In addition, the
The
At this time, since the
The elastic force of the
Therefore, the elastic force of the
Therefore, when the reinforcing
The
The
The one-touch automatic reinforcing coupler according to the preferred embodiment of the present invention is assembled as follows.
7A and 7B, an
7 (c), when the assembled
Then, as shown in Fig. 7 (d), the
7 (e), the
The internal state of the one-touch automatic reinforcing coupler according to the present invention completed as above is as follows.
The
The one-touch automatic reinforcing coupler of the present invention assembled as described above works as follows.
The reinforcing
Therefore, when the plurality of
According to the above-described one-touch automatic reinforcing coupler of the preferred embodiment of the present invention, loss of about 15% due to the conventional mechanical folding can be reduced, which is a factor for reducing the unit cost. can do. In addition, when assembling on-site, it is possible to improve work efficiency remarkably by working the reinforcing bars and reinforcing bars in a simple one-touch type instead of screwing the heavy reinforcing bars in a threaded shape, thereby significantly reducing the connection time of the reinforcing bars, Effect.
On the other hand, if the threaded type coupler of a conventional screw type is broken at a construction site, if both screw parts are cut and the cut part is replaced with a one-touch type automatic reinforcing coupler, serious problems There is also an advantage that can be solved. In addition, since the volume of the reinforcing coupler is reduced, the coupler can be slimmed to satisfy the concrete covering thickness of the reinforced concrete structure.
Hereinafter, the tension test and results of the one-touch automatic reinforcing coupler according to the present invention will be described.
8 is a graph showing tensile strength test results of a one-touch automatic reinforcing coupler according to the present invention at the Korea Chemical Fusion Test Institute (May 25, 2015).
Referring to FIG. 8, in order to quantitatively confirm the material (SM45C) of a steel material applied as a reinforcing coupler, a tensile test was conducted on a reinforcing bar coupled with a reinforcing coupler.
Tensile tests were carried out on KS specimens by connecting reinforcing couplers to ultra-high-strength bars with a yield strength of 400 MPa or more and a rebar diameter of D25 (25 mm).
The tensile test was carried out by the Korea Testing and Research Institute (KTR), and the results were as follows.
In this case, the mechanical joints shall not break at more than 125% of the yield strength of the reinforcing bars to be connected (Section 8.6.1 (3) ① of the structural design standard) and shall not be broken before the reinforcing bars (KS D 0249) .
Therefore, as shown in FIG. 8, it was found that a tensile strength of 617 MPa (154% of the yield strength) exceeding 125% or more than the tensile strength of the base material yield point (500 MPa) was obtained according to the unidirectional tensile test results.
The present invention is a one-touch type automatic reinforcing coupler designed to prevent the initial slip phenomenon and is designed to have an economical shape while satisfying the mechanical properties required on criteria such as tensile strength. The high strength large- It is a useful invention that can be more efficient when applied to a member having a large structural strength such as a high-level column, a core wall, or an out-rigger in which a horizontal force and a compressive force are largely generated.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, Of the right.
1,1 '.
110.
114.
120.
124.
200.
220.
300. O-
410.
600. Circular diaphragm
Claims (4)
The inclined surface 210 and the O-ring receiving groove 230 corresponding to the tapered portions 116 and 126 are formed on the outer side of the inside of the coupler body 100, (200) having a plurality of ratchet protrusions (220) which are supported while being supported by the protrusions of the ratchet protrusion (220) of the ratchet protrusion (220).
An O-ring 300 inserted into the O-ring receiving groove 230 to closely contact the plurality of knobs 200 in the axial direction;
And an upper end of the one side is closely contacted to the plurality of the bodies 200 by the O-ring 300 so that the plurality of the bodies 200 can be inserted into the plurality of the bodies 200 without interference An inner spring 400 that pushes down after being pulled by the inserted reinforcing bar and applies an elastic force to contact the circular diaphragm 600 to push the reinforcing bar from the inner side in the axial direction outward;
An outer spring (500) supported on a bottom surface of the plurality of fixtures (200) and exerting an elastic force to push the plurality of fixtures (200) outwardly in the axial direction from the inner side; And
And a circular diaphragm (600) disposed between the outer springs (500) to prevent entanglement and interference between the outer springs (500)
The flexible body 200 and the inner spring 400 do not move and the reinforcing bars contact the inner spring 400. When the inner spring 400 is depressed, the inner spring 400 is disengaged from the fixture 200, The inner spring 200 is pressed by the outer spring 500 to come into close contact with the reinforcing bar and the inner spring 400 is supported by the circular diaphragm 600 and the elastic force pushing the inner spring outward in the axial direction is applied to the reinforcing bars, To prevent an initial slip when the torsion bar is pulled.
A tapered portion 116 formed at an upper end of the hollow portion 114 so as to have an inner diameter larger toward the inner side in the axial direction from the outer side; A first coupler body 110 having a male thread 112 at the bottom of its outer surface;
A female screw part 122 formed on an inner side surface of the hollow part 124 to be screwed to the male screw part 112 of the first coupler body 110 at an upper end of the hollow part 124, , And a second coupler body (120) having a tapered portion (126) extending from the female threaded portion (122) and formed to have a smaller inner diameter toward the lower side in the axial direction.
Wherein an upper end portion (410) which is in contact with the fixture (200) is manufactured without a pitch.
Wherein an inner diameter of the outer spring (500) is larger than an outer diameter of the inner spring (400).
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KR1020150071445A KR101643846B1 (en) | 2015-05-22 | 2015-05-22 | One-touch type steel reinforcing coupler |
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KR1020150071445A KR101643846B1 (en) | 2015-05-22 | 2015-05-22 | One-touch type steel reinforcing coupler |
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Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101714329B1 (en) * | 2016-09-30 | 2017-03-09 | 전영철 | Coupler for connecting reinforcing rod |
KR20190016838A (en) | 2017-08-09 | 2019-02-19 | 삼성물산 주식회사 | Coupler guide for jointing iron bar |
KR101959076B1 (en) * | 2018-12-27 | 2019-03-15 | 배영재 | A rebar coupler |
KR20200000940A (en) | 2018-06-26 | 2020-01-06 | 현성주 | Coupler For Rebar Connect |
CN111321847A (en) * | 2020-01-02 | 2020-06-23 | 中国一冶集团有限公司 | Combined connecting mechanism |
CN111472498A (en) * | 2020-04-23 | 2020-07-31 | 陶闻钟 | Self-holding steel bar connector |
KR20200092699A (en) | 2019-01-25 | 2020-08-04 | 한봉희 | Rebar coupler |
US10760272B2 (en) | 2018-06-04 | 2020-09-01 | Yang Oun LEE | Rebar coupler |
KR20200125848A (en) | 2019-04-26 | 2020-11-05 | 최진열 | One-touch type reinforced coupler |
KR102189193B1 (en) | 2020-04-07 | 2020-12-09 | 김한규 | A coupler for connecting reinforcing bar |
KR102396003B1 (en) | 2021-08-27 | 2022-05-09 | 이남융 | One-touch type reinforcing bar coupler and its manufacturing method |
KR102563615B1 (en) | 2022-11-29 | 2023-08-03 | 방복남 | Rebar connection method using one-piece coupler |
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KR20020038291A (en) * | 2000-11-17 | 2002-05-23 | 김대권 | One touch type coupling device for reinforcing rods |
KR20060067060A (en) * | 2004-12-14 | 2006-06-19 | 오원석 | The steel frame the system which it connects |
KR100953941B1 (en) * | 2009-09-09 | 2010-04-21 | 김병섭 | Reinforcing bar coupler |
KR101519471B1 (en) * | 2014-12-10 | 2015-05-13 | (주)코스잭 | High Strength One-touch Quick-coupler for Connecting Reinforcing Rods Having Various Rib Shapes |
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Patent Citations (4)
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KR20020038291A (en) * | 2000-11-17 | 2002-05-23 | 김대권 | One touch type coupling device for reinforcing rods |
KR20060067060A (en) * | 2004-12-14 | 2006-06-19 | 오원석 | The steel frame the system which it connects |
KR100953941B1 (en) * | 2009-09-09 | 2010-04-21 | 김병섭 | Reinforcing bar coupler |
KR101519471B1 (en) * | 2014-12-10 | 2015-05-13 | (주)코스잭 | High Strength One-touch Quick-coupler for Connecting Reinforcing Rods Having Various Rib Shapes |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101714329B1 (en) * | 2016-09-30 | 2017-03-09 | 전영철 | Coupler for connecting reinforcing rod |
KR20190016838A (en) | 2017-08-09 | 2019-02-19 | 삼성물산 주식회사 | Coupler guide for jointing iron bar |
US10760272B2 (en) | 2018-06-04 | 2020-09-01 | Yang Oun LEE | Rebar coupler |
KR20200000940A (en) | 2018-06-26 | 2020-01-06 | 현성주 | Coupler For Rebar Connect |
KR101959076B1 (en) * | 2018-12-27 | 2019-03-15 | 배영재 | A rebar coupler |
CN113227511A (en) * | 2018-12-27 | 2021-08-06 | 裵荣在 | Reinforcing bar coupler |
WO2020138594A1 (en) * | 2018-12-27 | 2020-07-02 | 배영재 | Rebar coupler |
KR20200092699A (en) | 2019-01-25 | 2020-08-04 | 한봉희 | Rebar coupler |
KR20200125848A (en) | 2019-04-26 | 2020-11-05 | 최진열 | One-touch type reinforced coupler |
CN111321847A (en) * | 2020-01-02 | 2020-06-23 | 中国一冶集团有限公司 | Combined connecting mechanism |
KR102189193B1 (en) | 2020-04-07 | 2020-12-09 | 김한규 | A coupler for connecting reinforcing bar |
CN111472498A (en) * | 2020-04-23 | 2020-07-31 | 陶闻钟 | Self-holding steel bar connector |
KR102396003B1 (en) | 2021-08-27 | 2022-05-09 | 이남융 | One-touch type reinforcing bar coupler and its manufacturing method |
KR102563615B1 (en) | 2022-11-29 | 2023-08-03 | 방복남 | Rebar connection method using one-piece coupler |
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