KR20080007965A - Device for connecting steel-reinforcements - Google Patents

Device for connecting steel-reinforcements Download PDF

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Publication number
KR20080007965A
KR20080007965A KR1020060067261A KR20060067261A KR20080007965A KR 20080007965 A KR20080007965 A KR 20080007965A KR 1020060067261 A KR1020060067261 A KR 1020060067261A KR 20060067261 A KR20060067261 A KR 20060067261A KR 20080007965 A KR20080007965 A KR 20080007965A
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South Korea
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fastening member
reinforcing bar
connecting end
ratchet
ring
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KR1020060067261A
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Korean (ko)
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KR100799371B1 (en
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여운용
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(주)윈윈개발
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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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
    • F16B7/22—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections using hooks or like elements

Abstract

A reinforcing bar coupler is provided to couple two reinforcing bars strongly and simply and to prevent the separation of reinforcing bars from male and female fastening members by coupling ratchet hanging projections formed on connecting ends of first and second reinforcing bars with coupling projections of a cutting ring and a split ring strongly. A reinforcing bar coupler is used for coupling two reinforcing bars by fixing a cutting ring(50) into a connecting end portion(11) of a first reinforcing bar(10) having many first ratchet hanging projections(12) through a fitting hole(32) of a male fastening member(30) to make coupling projections of the cutting ring coupled with the ratchet hanging projections and to make the cutting ring adhered closely to the inner circumferential surface of the male fastening member and suspended on a hanging projection(33) of the male fastening member to keep the connecting end of the first reinforcing bar not to be separated from the male fastening member when the connecting end of the first reinforcing bar is fixed into the male fastening member and pulled in the direction of the arrow, fastening female threads(43) to male threads(33) of the male fastening member loosely, coupling a split ring(60) to a connecting end(21) of a second reinforcing bar(20) using an elastic band(67) and making coupling projections(61) of the split ring coupled with second ratchet hanging projections(22) formed on the connecting end of the second reinforcing bar, fixing the connecting end of the second reinforcing bar coupled with the split ring into a fitting hole(42) of a female fastening member(40) and making coupling projections of the split ring coupled with second ratchet hanging projections of the connecting end of the second reinforcing bar, and tightening the male fastening member and the female fastening member to make the split ring suspended on a hanging projection(41) of the female fastening member to keep the connecting end of the second reinforcing bar with the coupling projections of the split ring at the second ratchet hanging projections not to be separated from the female fastening member.

Description

철근연결장치{Device for connecting steel-reinforcements}Reinforcing Bar Device {Device for connecting steel-reinforcements}

도 1은 본 발명에 따른 철근연결장치를 도시한 분해 사시도1 is an exploded perspective view showing a rebar connecting device according to the present invention

도 2 내지 도 6은 본 발명에 따른 철근연결장치의 조립 공정을 도시한 단면도2 to 6 are cross-sectional views showing the assembly process of the rebar connecting device according to the present invention.

본 발명은 2개의 철근을 연결하는 철근연결장치에 관한 것으로서, 보다 상세하게는 제 1 및 제 2 철근의 연결단부에 라체트 걸림돌기가 각각 형성되고, 제 1 철근의 연결단부가 수체결부재에 끼워져 결합돌기가 형성된 절개링과 결합되므로서, 절개링이 수체결부재의 걸림턱에 걸려 빠지지 않게 되고, 제 2 철근의 연결단부가 결합돌기가 형성된 분할링과 결합되어 상기 분할링이 암체결부재에서 걸림으로서 제 2 철근의 연결단부가 암체결부재에서 빠지지 않는 철근연결장치에 관한 것이다.The present invention relates to a reinforcing bar connecting device for connecting two reinforcing bars, and more specifically, a ratchet engaging protrusion is formed at each of the connecting ends of the first and second reinforcing bars, and the connecting end of the first reinforcing bars is fitted to the water fastening member. Since the engaging ring is coupled with the incision ring formed, the incision ring is not caught by the locking jaw of the male fastening member, and the connecting end of the second reinforcing bar is combined with the dividing ring in which the engaging projection is formed so that the dividing ring is formed in the female fastening member. It relates to a reinforcing bar connecting device in which the connecting end of the second reinforcing bar does not fall out of the female fastening member.

대한민국 특허 제0443594호(2004년 7월 28일 등록)에 "철근연결장치"가 소개되어 있다.Republic of Korea Patent No. 0443594 (registered on July 28, 2004) "rebar connection device" is introduced.

상기 철근연결장치는 내측면에 볼록한 형상의 이탈방지돌기가 다수 형성되며 철근의 외면 일부를 감싸는 구조로 결합되는 둘 이상의 조각편과 조각편의 위치를 고정시키는 지지체를 구비하는 결합부와, 지지체를 안착시키는 지지체 안착홈을 구비하는 고정부와, 조각편을 내부에 인입시킨 후 고정부와 나사결합구조로 결합됨으로써 조각편을 철근에 밀착시키는 조임너트를 포함하여 구성되는 철근연결장치에 있어서; 상기 조각편은 상기 지지체에 삽입되어 고정 결합되는 삽입단과, 상기 지지체와의 결합 시 상기 지지체의 외부로 돌출된 상태로 고정되며 상기 삽입단과 동일한 너비로 형성되는 돌출단으로 구성되고; 상기 지지체는 탄성체 재질로 형성되며, 상기 삽입단이 끼워맞춤 방식으로 삽입 가능한 크기로 철근의 삽입방향과 평행한 방향으로 형성되는 조각편 결합구를 구비하였다.The reinforcing bar connection device is formed with a plurality of convex escape prevention projections on the inner side and the coupling portion having a support for fixing the position of two or more pieces and pieces to be bonded in a structure surrounding the outer part of the reinforcement, and seating the support In the reinforcing bar connection device comprising a fixing part having a support seating groove, and a tightening nut for inserting the piece into the inside and then coupled to the fixing part and the screw coupling structure to closely adhere the piece to the rebar; The piece piece is composed of an insertion end inserted into the support and fixed to the support, and a protruding end is fixed to protrude to the outside of the support when combined with the support and formed with the same width as the insertion end; The support body is formed of an elastic material, and the insertion end has a piece piece coupling sphere formed in a direction parallel to the insertion direction of the reinforcement in a size that can be inserted in a fitting manner.

그러나, 상기 철근연결장치는 철근에 인장력이 작용하여 철근이 조각편에서 당겨지면 철근이 조각편에 대해 슬립이 발생하여 빠질 수 있는 위험이 있다.However, the reinforcing bar connection device has a risk that the reinforcing bar is slipped with respect to the piece pieces when the tensile force is applied to the rebar pulled from the piece pieces.

따라서, 본 발명의 목적은 제 1 및 제 2 철근의 연결단부에 라체트 걸림돌기가 각각 형성되고, 제 1 철근의 연결단부가 수체결부재에 끼워져 결합돌기가 형성된 절개링과 결합되므로서, 절개링이 수체결부재의 걸림턱에 걸려 빠지지 않게 되고, 제 2 철근의 연결단부가 결합돌기가 형성된 분할링과 결합되어 상기 분할링이 암체결부재에서 걸림으로서 제 2 철근의 연결단부가 암체결부재에서 빠지지 않음으로써, 2개의 철근을 견고하고 간편하게 연결할 수 있는 철근연결장치를 제공하는 것이다.Therefore, an object of the present invention is a ratchet engaging protrusion is formed at each of the connecting end of the first and second reinforcing bars, the connecting end of the first reinforcing bar is coupled to the cutting ring formed by the engaging projection is inserted into the water fastening member, The locking jaw of the male fastening member does not fall out, and the connecting end of the second reinforcing bar is engaged with the split ring having the engaging projection, so that the split ring is caught by the female fastening member, so that the connecting end of the second rebar is By not falling out, it is to provide a reinforcing bar connecting device that can be connected to the two reinforcing rods firmly and easily.

상기와 같은 목적을 달성하기 위한 본 발명의 바람직한 실시예를 도면을 참조하여 상세하게 설명하기로 한다.Preferred embodiments of the present invention for achieving the above object will be described in detail with reference to the drawings.

도 1 내지 도 5를 참조하면, 본 발명에 따른 철근연결장치는 제 1 철근(10)의 연결단부(11)에 다수개의 제 1 라체트 걸림돌기(12)가 형성되고, 상기 연결단부(11)에 절개링(50)이 장착되어, 상기 절개링(50)의 결합돌기(51)가 제 1 라체트 걸림돌기(12)와 결합되고, 상기 절개링(50)이 수체결부재(30)의 걸림턱(31)에 걸려 제 1 철근(10)의 연결단부(11)가 수체결부재(30)에서 빠지지 않게 되고, 상기 수체결부재(30)에 암체결부재(40)가 체결되고, 상기 암체결부재(40)에 끼움구멍(41)을 통해 제 2 철근(20)의 연결단부(21)에 결합된 분할링(60)이 제 2 철근(20)의 연결단부(21)와 함께 암체결부재(40)에 끼워지고, 상기 제 2 철근(20)의 연결단부(21)에 형성된 다수개의 제 2 라체트 걸림돌기(22)와 분할링(60)에 형성된 결합돌기(61)가 결합된 상태에서 분할링(60)이 암체결부재(40)의 걸림턱(41)에 걸려 제 2 철근(20)의 연결단부(21)가 암체결부재(40)에서 빠지지 않게 연결된다.1 to 5, in the rebar connecting device according to the present invention, a plurality of first ratchet locking protrusions 12 are formed at the connecting end 11 of the first reinforcing bar 10, and the connecting end 11 is formed. The cutting ring 50 is mounted to the coupling ring 51 of the cutting ring 50 and the first latching protrusion 12, and the cutting ring 50 is the male fastening member 30. The connection end 11 of the first reinforcing bar 10 is not caught by the fastening member 31 of the male fastening member 30, and the female fastening member 40 is fastened to the male fastening member 30. The split ring 60 coupled to the connecting end 21 of the second rebar 20 through the fitting hole 41 in the female fastening member 40 together with the connecting end 21 of the second rebar 20. A plurality of second ratchet latching protrusions 22 and coupling protrusions 61 formed on the connecting end portion 21 of the second reinforcing bar 20 and the split ring 60 are fitted to the female fastening member 40. The engaging ring 41 of the female fastening member 40 is divided ring 60 in the coupled state The connecting end 21 of the second reinforcing bar 20 is connected to the female fastening member 40 so as not to be caught.

상기 제 1 라체트 걸림돌기(12)는 절두된 쐐기형상으로 형성되며, 경사부(12a)가 외주면에 대해 25°~30°의 경사각(a)을 가지며, 절개링(50)의 결합돌 기(51)가 제 1 라체트 걸림돌기(12)와 반대로 형성되므로서, 제 1 철근(10)의 연결단부(11)가 절개링(30)에 쉽게 끼워지지만, 제 1 철근(10)의 연결단부(11)가 절개링(30)에서 빠지지 않게 된다. The first ratchet engaging protrusion 12 is formed in a truncated wedge shape, the inclined portion 12a has an inclination angle (a) of 25 ° ~ 30 ° with respect to the outer peripheral surface, the engaging projection of the incision ring 50 Since the 51 is formed opposite to the first ratchet locking protrusion 12, the connecting end 11 of the first rebar 10 is easily fitted into the cutting ring 30, but the first rebar 10 is connected. The end 11 does not fall out of the incision ring 30.

상기 제 2 라체트 걸림돌기(22)와 분할링(60)의 결합돌기(61)의 구성은 제 1 라체트 걸림돌기(12)와 절개링(50)의 결합돌기(12) 구성과 동일하다.The configuration of the coupling protrusion 61 of the second ratchet locking protrusion 22 and the split ring 60 is the same as that of the coupling protrusion 12 of the first ratchet locking protrusion 12 and the cutting ring 50. .

도 1 및 도 2를 참조하면, 상기 분할링(60)은 내주면에 결합돌기(61)가 형성되고, 후단부의 외경(d1)에 선단부의 외경(d2)보다 큰 외경을 갖는 테이퍼부(63)가 형성되고, 외주면에 탄성 밴드(67 ; 고무줄 밴드 또는 밴드 스프링)가 장착되는 장착홈(65)이 형성된다.1 and 2, the split ring 60 has a coupling protrusion 61 formed on an inner circumferential surface thereof, and a taper portion 63 having an outer diameter greater than an outer diameter d2 of the front end portion at an outer diameter d1 of the rear end portion. Is formed, the mounting groove 65 is mounted on the outer circumferential surface elastic band 67 (rubber band or band spring).

상기와 같이 구성된 본 발명에 따른 철근연결장치는 다음과 같이 2개의 철근을 연결할 수 있다.The rebar connecting device according to the present invention configured as described above can connect two rebars as follows.

제 1 라체트 걸림돌기(12)가 형성된 제 1 철근(10)의 연결단부(11)를 수체결부재(30)의 끼움구멍(32)을 통해 끼우고, 제 1 라체트 걸림돌기(12)와 결합돌기(51)가 결합되도록 절개링(50)을 제 1 철근(10)의 연결단부(11)에 끼운다. 이것에 의해, 도 3에 도시된 바와같이, 제 1 철근(10)의 연결단부(11)가 수체결부재(40)에 끼워진 상태에서 화살표(71) 방향으로 당겨졌을 때, 상기 절개링(50)의 외주면이 수체결부재(30)의 내주면에 밀착되고, 상기 절개링(50)이 상기 수체결부재(30)의 걸림턱(33)에 걸리게 되므로서, 제 1 철근(10)의 연결단부(11)가 수체결부재(30)에서 빠지지 않게 된다.The connecting end 11 of the first reinforcing bar 10 having the first ratchet catching protrusion 12 formed therein is inserted through the fitting hole 32 of the water fastening member 30, and the first ratchet catching protrusion 12 And the cutting ring 50 to be coupled to the connecting end 11 of the first reinforcing bar 10 so that the coupling protrusion 51 is coupled thereto. As a result, as shown in FIG. 3, when the connecting end 11 of the first reinforcing bar 10 is pulled in the direction of the arrow 71 in a state of being fitted to the water fastening member 40, the cutting ring 50 The outer circumferential surface of the) is in close contact with the inner circumferential surface of the water fastening member 30, the cutting ring 50 is caught by the locking jaw 33 of the water fastening member 30, the connection end of the first reinforcing bar 10 11 does not fall out of the water fastening member 30.

이후, 도 3에 도시된 바와같이, 수체결부재(30)의 수나선부(33)에 암체결부 재(40)의 암나선부(43)가 느슨하게 체결된다. 그리고, 제 2 철근(20)의 연결단부(21)에 탄성밴드(67)를 이용하여 분할링(67)을 결합시킨다. 이때, 분할링(60)의 결합돌기(61)가 제 2 철근(20)의 연결단부(21)에 형성된 제 2 라체트 걸림돌기(22)와 결합된다.Thereafter, as shown in FIG. 3, the female threaded portion 43 of the female fastening member 40 is loosely fastened to the male threaded portion 33 of the male fastening member 30. Then, the split ring 67 is coupled to the connection end portion 21 of the second rebar 20 by using the elastic band 67. At this time, the coupling protrusion 61 of the split ring 60 is coupled to the second ratchet latching protrusion 22 formed at the connection end portion 21 of the second rebar 20.

이후, 도 4 및 도 5에 도시된 바와같이, 분할링(60)이 장착된 제 2 철근(20)의 연결단부(21)를 암체결부재(40)의 끼움구멍(42)을 통해 끼워넣는다. 이때, 도 5에 도시된 것처럼, 분할링(60)의 테이퍼부(62)가 암체결부재(40)의 끼움구멍(42)을 통과할 때, 분할링(60)의 선단이 벌어지면서 분할링(60)의 테이퍼부(62)가 수축되어 암체결부재(40)의 끼움구멍(42)을 통과할 수 있게 된다.4 and 5, the connecting end 21 of the second reinforcing bar 20 having the split ring 60 is inserted through the fitting hole 42 of the arm fastening member 40. . At this time, as shown in FIG. 5, when the taper portion 62 of the dividing ring 60 passes through the fitting hole 42 of the female fastening member 40, the tip of the dividing ring 60 opens while the dividing ring is opened. The tapered portion 62 of the 60 is contracted to pass through the fitting hole 42 of the arm fastening member 40.

이후, 도 6에 도시된 바와같이, 분할링(60)의 테이퍼부(62)가 암체결부재(40)의 끼움구멍(42)을 통과하면, 탄성밴드(67)에 의해 분할링(60)의 테이퍼부(62)가 원상태로 회복되어 분할링(60)의 결합돌기(61)가 제 2 철근(20)의 연결단부(21)의 제 2 라체트 걸림돌기(22)에 결합된다.6, when the taper portion 62 of the split ring 60 passes through the fitting hole 42 of the female fastening member 40, the split ring 60 is formed by the elastic band 67. The tapered portion 62 is restored to its original state, and the coupling protrusion 61 of the split ring 60 is coupled to the second ratchet latching protrusion 22 of the connecting end 21 of the second reinforcing bar 20.

이후, 도 6에 도시된 바와같이, 수체결부재(30)와 암체결부재(40)를 조이면, 분할링(60)이 암체결부재(40)의 걸림턱(41)에 걸리게 되어, 분할링(60)의 결합돌기(61)와 제 2 라체트 걸림돌기(22)가 결합된 제 2 철근(20)의 연결단부(21)가 암체결부재(40)에서 빠지지 않게 된다.Then, as shown in Figure 6, when tightening the fastening member 30 and the female fastening member 40, the split ring 60 is caught by the locking jaw 41 of the female fastening member 40, the split ring The connecting end 21 of the second reinforcing bar 20 to which the coupling protrusion 61 and the second ratchet locking protrusion 22 of the 60 are coupled does not fall out of the arm fastening member 40.

위에서 설명한 바와같이, 본 발명에 따른 철근연결장치는 부품수가 적고 라 체트 걸림돌기와 결합돌기가 견고하게 결합되어, 2개의 철근을 간편하게 연결할 수 있으면서 철근이 암수체결부재에서 빠지는 것을 확실하게 방지할 수 있으며, 특히 철근의 연결단부에 인장력이 가해졌을 때 철근의 연결단부가 뭉글어지면서 슬립이 발생하는 것을 확실하게 방지할 수 있는 효과가 있다.As described above, the rebar connecting device according to the present invention has a small number of parts and is firmly coupled with the ratchet latching projection and the engaging projection, so that the rebar can be reliably prevented from falling out of the male and female fastening members while being able to easily connect the two rebars. In particular, when a tensile force is applied to the connecting end of the reinforcing bar, the connecting end of the reinforcing bar is reliably prevented from slipping.

Claims (3)

제 1 철근(10)의 연결단부(11)에 다수개의 제 1 라체트 걸림돌기(12)가 형성되고, 상기 연결단부(11)에 절개링(50)이 장착되어, 상기 절개링(50)의 결합돌기(51)가 제 1 라체트 걸림돌기(12)와 결합되고, 상기 절개링(50)이 수체결부재(30)의 걸림턱(31)에 걸려 제 1 철근(10)의 연결단부(11)가 수체결부재(30)에서 빠지지 않게 되고, 상기 수체결부재(30)에 암체결부재(40)가 체결되고, 상기 암체결부재(40)에 끼움구멍(41)을 통해 제 2 철근(20)의 연결단부(21)에 결합된 분할링(60)이 제 2 철근(20)의 연결단부(21)와 함께 암체결부재(40)에 끼워지고, 상기 제 2 철근(20)의 연결단부(21)에 형성된 다수개의 제 2 라체트 걸림돌기(22)와 분할링(60)에 형성된 결합돌기(61)가 결합된 상태에서 분할링(60)이 암체결부재(40)의 걸림턱(41)에 걸려 제 2 철근(20)의 연결단부(21)가 암체결부재(40)에서 빠지지 않게 연결되는 것을 특징으로 하는 철근연결장치.A plurality of first ratchet latching protrusions 12 are formed at the connecting end 11 of the first reinforcing bar 10, and the cutting ring 50 is mounted at the connecting end 11, so that the cutting ring 50 is provided. The engaging protrusion 51 of the first ratchet engaging protrusion 12 is coupled, the cutting ring 50 is caught on the locking jaw 31 of the water fastening member 30, the connecting end of the first reinforcing bar 10 (11) does not fall out of the male fastening member 30, the female fastening member 40 is fastened to the male fastening member 30, the second through the fitting hole 41 in the female fastening member (40) The split ring 60 coupled to the connecting end 21 of the reinforcing bar 20 is fitted to the female fastening member 40 together with the connecting end 21 of the second reinforcing bar 20 and the second reinforcing bar 20. The split ring 60 of the female fastening member 40 in a state in which the plurality of second ratchet catching protrusions 22 formed at the connecting end 21 of the coupling protrusions 22 and the coupling protrusion 61 formed at the split ring 60 are combined. The connecting end 21 of the second reinforcing bar 20 is caught by the locking jaw 41 at the female fastening member 40. Reinforcement connection devices that do not connect, characterized. 제 1 항에 있어서,The method of claim 1, 상기 제 1 라체트 걸림돌기(12)는 절두된 쐐기형상으로 형성되며, 경사부(12a)가 외주면에 대해 25°~30°의 경사각(a)을 가지며, 절개링(50)의 결합돌기(51)가 제 1 라체트 걸림돌기(12)와 반대로 형성되므로서, 제 1 철근(10)의 연결단부(11)가 절개링(30)에 쉽게 끼워지지만, 제 1 철근(10)의 연결단부(11)가 절개 링(30)에서 빠지지 않게 되는 것을 특징으로 하는 철근연결장치.The first ratchet locking protrusion 12 is formed in a truncated wedge shape, the inclined portion 12a has an inclination angle a of 25 ° to 30 ° with respect to the outer circumferential surface, and the engaging protrusion of the incision ring 50. 51 is formed opposite to the first ratchet engaging protrusion 12, so that the connecting end 11 of the first reinforcing bar 10 is easily fitted into the cutting ring 30, but the connecting end of the first reinforcing bar 10 is Rebar connection device, characterized in that 11 does not fall out of the incision ring (30). 제 1 항에 있어서,The method of claim 1, 상기 분할링(60)은 내주면에 결합돌기(61)가 형성되고, 후단부의 외경(d1)에 선단부의 외경(d2)보다 큰 외경을 갖는 테이퍼부(63)가 형성되고, 외주면에 탄성 밴드(67 ; 고무줄 밴드 또는 밴드 스프링)가 장착되는 장착홈(65)이 형성되는 것을 특징으로 하는 철근연결장치.Coupling projection 61 is formed on the inner circumferential surface of the split ring 60, and a tapered portion 63 having an outer diameter larger than the outer diameter d2 of the front end portion is formed on the outer diameter d1 of the rear end portion, and an elastic band ( 67; Reinforcing bar connecting device, characterized in that the mounting groove 65 is formed to be mounted elastic band or band spring).
KR1020060067261A 2006-07-19 2006-07-19 Device for connecting steel-reinforcements KR100799371B1 (en)

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KR101267769B1 (en) 2011-04-27 2013-05-27 현대제철 주식회사 Steel bar and coupling device the same
KR102240119B1 (en) * 2019-09-05 2021-04-13 김민수 Connecting apparatus of reinforcing rod
KR102583172B1 (en) * 2021-11-11 2023-09-25 손영학 Coupler for connecting reinforcing rod

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KR100240099B1 (en) * 1997-07-28 2000-06-01 정경옥 Coupler for iron bar
KR19980025340A (en) * 1998-04-09 1998-07-06 이정수 Rebar connector
KR100305893B1 (en) * 1998-12-31 2001-11-02 송영길, 오명훈 Rebar fittings
KR100411242B1 (en) * 2001-10-16 2003-12-18 (주)윈윈개발 Universal nut type steel-frame coupling device
KR20020023984A (en) * 2002-01-02 2002-03-29 박종철 Steel bar coupler of the teeth of a saw type
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