WO2024025092A1 - One-touch rebar coupler having integrated-type coupler body - Google Patents

One-touch rebar coupler having integrated-type coupler body Download PDF

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Publication number
WO2024025092A1
WO2024025092A1 PCT/KR2023/006066 KR2023006066W WO2024025092A1 WO 2024025092 A1 WO2024025092 A1 WO 2024025092A1 KR 2023006066 W KR2023006066 W KR 2023006066W WO 2024025092 A1 WO2024025092 A1 WO 2024025092A1
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Prior art keywords
tapered
coupler body
parts
tightening
integrated
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PCT/KR2023/006066
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French (fr)
Korean (ko)
Inventor
양현민
양지성
양안종
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주식회사 알오씨
양현민
양지성
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Publication of WO2024025092A1 publication Critical patent/WO2024025092A1/en

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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
    • 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

Definitions

  • the present invention relates to a one-touch rebar coupler, and more specifically, to a one-touch rebar coupler having an integrated coupler body with improved strength for connecting rebars during the construction of a concrete structure.
  • reinforcement work is performed when manufacturing concrete structures for the construction of buildings and various civil engineering works.
  • the reinforcing bars for this are manufactured in standardized lengths, the reinforcement work involves interconnecting reinforcing bars of a certain length. .
  • a coupler for connecting reinforcing bars during reinforcement work is published in Korean Patent No. 101768816, and a one-touch rebar coupler is published in Korean Patent No. 101654150.
  • Republic of Korea Patent Publication No. 2019-0002186 discloses a rebar coupler in which the coupler body is formed integrally
  • Republic of Korea Utility Model Publication No. 2021-000573 discloses a one-touch type rebar coupler.
  • the rebar coupler in which the posted body is formed as one body includes a coupler body including a hollow part into which a rebar can be inserted and a nut part for fixing the rebar inserted into the coupler body, the coupler body having a main body and one side of the main body part. It includes a first extension part extending to the other side of the main body part and a second extension part extending to the other side of the main body part, and the coupler body has a first incision formed continuously from the first extension part through the main body part to the second extension part.
  • the rebar coupler of this structure has an integral body, but has a structure that is cut in the longitudinal direction and connected to the nut, so the bonding force of the rebar cannot be increased.
  • the body since the body has a structure that grips the rebar, there is a limit to reducing the initial slip amount.
  • the rebar gutter published in Republic of Korea Publication No. 2021-0128953 has a housing that is hollow on the inside and has first and second insertion holes for inserting rebar on both sides, respectively.
  • This housing is an integrated body made of metal. It is composed of and has a structure in which the inner diameter monotonically decreases toward the first and second insertion holes.
  • the housing of this rebar coupler receives force in the direction in which the axial tube area is expanded by the fixing members that secure the rebar when a tensile force is applied in the longitudinal direction while the rebars are combined. Therefore, there is a problem that the shaft pipe portion of the housing is plastically deformed or damaged, and the initial slip amount of the reinforcing bars relative to the housing increases.
  • the present invention is intended to solve the problems described above, and strengthens the strength of the tapered portion of the coupler body formed as an integrated piece, prevents the tapered portion of the coupler body from being damaged when tensile force is applied to the reinforcing bar, and prevents the initial slip amount of the combined reinforcing bar from being damaged.
  • the aim is to provide a one-touch rebar coupler with an integrated coupler body that can reduce .
  • Another object of the present invention is to provide an integrated coupler body that increases the gripping force of the tightening member that grips the reinforcing bar by having a soft part with inherent strength of the material in the tapered parts on both sides of the integrally formed coupler body and a rigid part that is relatively stronger than the soft part.
  • the aim is to provide a one-touch rebar coupler.
  • An integrated coupler body made of carbon steel with a hollow portion formed having first and second tapered portions with shaft pipes gradually expanding from the insertion ports on both sides into which the reinforcing bars are inserted, and a first clamping member inserted into the first tapered portion of the hollow portion. It is installed between the first tightening unit having a first tightening unit, a second tightening unit having second tightening members inserted into the second tapered portion side of the hollow part, and the first and second tightening units. Elastic members are provided for elastically biasing the first and second tightening members of the tightening unit to the first and second tapered portions, respectively,
  • a first flexible portion having the strength of a first tapered portion formed by the shaft pipe of the integrated coupler body, and at least one first rigid portion that is relatively stronger than the first flexible portion in the circumferential direction,
  • It is characterized in that it is provided with a second flexible part having the strength of the second tapered part where the shaft pipe of the integrated coupler body is formed, and at least one second rigid part that is relatively stronger than the second flexible part in the circumferential direction.
  • the first and second rigid parts are respectively formed on the outer peripheral surface corresponding to the first and second tightening members inserted into the first and second tapered parts, and the first and second flexible parts are formed in the first and second tapered parts. Each is formed on the end side of the section.
  • the first and second rigid parts formed in the first and second tapered parts, respectively, are formed in the skin layer in the thickness direction by heat-treating the outer peripheral surfaces of the first and second tapered parts by an induction heating means.
  • the one-touch rebar coupler with an integrated coupler body according to the present invention can fundamentally prevent the coupler body from being weakened by combining two conventional members because the coupler body is made of a single member.
  • the coupler body according to the present invention prevents the diameter from increasing in order to supplement the strength of the coupler body when constructing a concrete structure, thereby preventing a decrease in the amount of concrete poured at the reinforcing bar connection area by the coupler.
  • Figure 1 is a partially cut-off perspective view of a one-touch rebar coupler with an integrated coupler body according to the present invention
  • Figure 2 is a partially cut away perspective view showing the integrated coupler body shown in Figure 1.
  • Figures 3 and 4 are cross-sectional views showing other embodiments of the integrated coupler body according to the present invention, respectively.
  • Figure 5 is a cross-sectional view showing a state in which reinforcing bars are coupled to the one-touch rebar coupler having an integrated coupler body shown in Figure 1.
  • the one-touch rebar coupler (10) with an integrated coupler body is for interconnecting rebars when placing reinforcement for the construction of civil engineering or concrete buildings, and the first and second rebars (110) to be connected ( First and second insertion holes (21a) (22a) on both sides into which 120) is inserted, and first and second tapered portions (21) gradually expanding toward the center from the first and second insertion holes (21a) (22a). (22) and an integrated coupler body (20) having a hollow portion (24) extending in the longitudinal direction.
  • the first soft parts 71 and 72 may have the strength of the material forming the coupler body 20, and the first and second rigid parts 75 and 76 are made of a material that is relatively stronger than the soft part. It can be.
  • the one-touch rebar coupler according to the present invention is inserted into the hollow portion 24 of the coupler body 20, comes into close contact with the inner peripheral surface of the first tapered portion 21, and is a first tightening unit for gripping the first rebar 110.
  • (30) and a second tightening unit (40) that is inserted into the hollow portion (24) of the coupler body (20) and is in close contact with the inner peripheral surface of the second tapered portion (22) and is for gripping the second reinforcing bar (120). Equipped with And, between the first and second tightening units (30) and (40), the first and second tightening members of the first tightening unit (30) and the second tightening unit (40) are inserted into the first and second insertion ports (21a).
  • An elastic member 50 is installed to elastically bias toward (22a).
  • the one-touch rebar coupler 10 having an integrated coupler body according to the present invention configured as described above will be described in more detail for each component as follows.
  • the coupler body 20 of the rebar coupler 10 is a member having a hollow portion 24 penetrating the center in the longitudinal direction, and includes the first and second tightening units 30 and 40 and the elastic member described above. (50) is inserted, and parts on both sides are piped to form the first and second tapered portions (21) and (22).
  • the first and second tapered portions 21 and 22 have both inner and outer surfaces tapered.
  • the inner peripheral surfaces of the first and second tapered portions 21 and 22 have a structure tapered at substantially the same angle as the outer peripheral surfaces of the first and second tightening units 30 and 40, respectively.
  • the material of this coupler body 20 is made of carbon steel, and it is preferable to use carbon steel such as KS standard S45C, SCM440, and SCM450. However, it is not limited to this.
  • first and second rigid parts 75 and 76 formed on the first and second tapered parts 21 and 22 of the coupler body 20 as described above are the outer peripheral surface of the first tightening unit 30 and 40.
  • first and second tightening members (31) (41) which will be described later, each gripping the reinforcing bar to be gripped, the first and second tapered portions (21) (22) corresponding to the outer peripheral surface thereof are moved in the circumferential direction. This is achieved by hardening the surface through induction heat treatment.
  • the high-frequency heat treatment of the first and second rigid parts 75 and 76 is performed by heating and then rapidly cooling using a high-frequency coil that oscillates at a frequency of 1 to 500 kHZ.
  • the penetration depth of the high-frequency current is the coupler body 20. It is determined by the permeability, resistance, and frequency of carbon steel.
  • the first and second rigid parts 75a and 76a prevent frequency current from penetrating more than half of the thickness from the outer peripheral surface of the first and second tapered parts 21 and 22, thereby preventing the first and second rigid parts 75a and 76a from penetrating the first and second rigid parts 75a and 76a. It is desirable that the skin layer on the outer peripheral surface of the 2-tapered portion 21 (22) can be heat treated.
  • first and second rigid parts (75b) (75b) are at least two spaced apart at a predetermined distance in the longitudinal direction of the first and second tapered parts (21) and (22). More than one can be formed.
  • first and second flexible parts 71 and 72 are preferably positioned at the end sides of the first and second tapered parts 21 and 22 of the coupler body 20.
  • the first and second flexible parts 71 and 72 may be made of carbon steel that forms the coupler body 20.
  • the first and second flexible parts 71 and 72 may be heat treated to a lower strength than the first and second rigid parts 75 and 76.
  • the elastic member 50 inserted into the coupler body 20 is heated to form the elastic member 50 and the expansion ring 81. Since the elasticity of (82) may be reduced, it is preferable to heat treat at a low temperature within 320°C to 400°C to prevent the elasticity of the elastic members from deteriorating.
  • first and second tapered parts (21) and (22) of the coupler body (20) are subjected to induction heat treatment to form the first and second rigid parts (75) and (76), and then subjected to high frequency heat treatment to reduce the brittleness of the first and second rigid parts.
  • induction heat treatment to form the first and second rigid parts (75) and (76)
  • high frequency heat treatment to reduce the brittleness of the first and second rigid parts.
  • low-temperature heat treatment 200°C to 250°C or lower.
  • the thickness of the first and second tapered parts 21 and 22 of the coupler body 20 may be adjusted for heat treatment of the first and second rigid parts 75 and 76.
  • the first tightening unit 30 has a third tapered portion 32 corresponding to the first tapered portion 21 and is inserted into the hollow portion 24 of the coupler body 20 to insert the first tapered portion 21. ) is provided with a plurality of first clamping members 31 to provide a holding force to the first reinforcing bar 110 by being moved by the elastic member 50 to the side.
  • the first tightening unit 30 is arranged along the outer peripheral surface of the first reinforcing bar 110, and may be composed of two to four first tightening members 31. However, it is not limited to this.
  • a support protrusion and a support groove into which the support protrusion is inserted may be formed on the lower sides of the first reinforcement members 31 as a posture maintenance means to prevent the first reinforcing bar 110 from being disturbed when gripped.
  • first protrusions 35 may be formed on the inner peripheral surface of the first brace member 31 for coupling with the reinforcing bar, and these first protrusions 35 may be formed in the shape of a sawtooth or inclined downward. You can. And the first protrusions 35 formed on the first tightening members 31 may be formed continuously along the inner peripheral surface of each first tightening member 31.
  • the second tightening unit 40 has a fourth tapered portion 42 corresponding to the second tapered portion 22, and is inserted into the hollow portion 24 of the coupler body 20 to insert the second tapered portion 22. ) is provided with a plurality of second tightening members 41 that provide a gripping force to the second reinforcing bar 120 by being moved by the elastic member 50 to the side. And on the inner peripheral surface of the second set member (41), a plurality of second protrusions (45) are formed for coupling with the reinforcing bar, like the first set member (31).
  • expansion rings (81, 82) are provided to expand the first tightening members (31) and second tightening members (42) constituting them in the outward direction. Can be installed separately (see Figure 1)
  • the elastic member 50 is installed in the hollow portion 24 of the coupler body 20 to tighten the first and second tightening units 30 and 40 along the first and second tapered portions 21 and 22, respectively. It is intended to elastically bias toward the first and second insertion holes (21a) (22a), and may be made of at least one spring. It is desirable that the inner diameter of the spring be relatively larger than the diameter of the reinforcing bar to which it is coupled.
  • a reinforcing bar insertion position limiting member 25 penetrating the central part of the coil spring 50 is installed at the center of the coupler body 20. This defines the joining position of the first and second reinforcing bars 110 and 120, which are coupled by supporting the ends of the inserted reinforcing bars.
  • the reinforcing bar insertion position limiting member 25 may be made of a rod-shaped member coupled to the central portion of the coupler body 20. However, it is not limited to this, and the rod-shaped support pins may be installed to cross each other.
  • first and second confirmation holes (26) for checking the insertion status of the first and second reinforcing bars (110) (120) coupled to both sides of the coupler body (20) with the center of the reinforcing bar insertion position limiting member (91) )(27) is formed.
  • the first and second confirmation holes 26 and 27 may be formed in a circular, oval or elongated shape so as to confirm the joint portion of the first and second reinforcing bars 110 and 120.
  • the first and second reinforcing bars 110 and 120 are connected through the first and second insertion holes 21a and 22a formed on both sides of the coupler body 20 made of a single member.
  • the ends of (110) (120) are inserted so that they contact the reinforcing bar insertion position limiting member (25).
  • first and second tightening units (30) (40) retract as the spring, which is the elastic member (50), is compressed, and the first and second tightening members (31) (41) expand and the reinforcing bar is inserted.
  • first and second tightening units (30) (40) into which both ends of the first and second reinforcing bars (110) (120) are inserted, are connected to the first and second insertion holes (21a) (22a) by means of springs, which are elastic members (50). ) side, thereby gripping the first and second reinforcing bars 110 and 120, respectively.
  • first and second reinforcing bars 110 and 120 are coupled by the reinforcing bar coupler 10
  • a tensile force is applied in the direction in which the coupled first and second reinforcing bars 110 and 120 are separated.
  • the third tapered portion 32 of the first tightening member 31 and the fourth tapered portion 42 of the second tightening member 41, which form the first and second tightening units 30 and 40, are coupled to the coupler body.
  • the first and second reinforcing bars 110 and 120 are gripped while being in close contact with the inner peripheral surfaces of the first and second tapered parts 21 and 22 of (20), respectively.
  • the first and second tightening units (30) and (40) are moved to the outlet side, that is. It is moved to the first and second insertion holes 21a and 22a, respectively. Accordingly, the third tapered portion 32 of the first tightening members 31 of the first tightening unit 30 is moved relative to the first tapered portion 21 and is pressed toward the outer peripheral surface of the first reinforcing bar 110. And the fourth tapered portion 42 of the second tightening members 41 of the second tightening unit 40 is moved relative to the second tapered portion 21 and is pressed toward the outer peripheral surface of the second reinforcing bar 120.
  • the first and second tapered parts 21 and 22 of the coupler body 20 have first and second rigid parts 75 and 76. ) are formed, respectively, and first and second flexible parts 71 and 72 are formed on the end sides of the first and second tapered parts 21 and 22, respectively, so that the first and second tapers of the coupler body 20 It is possible to prevent the parts 21 and 22 from being damaged or torn.
  • first and second tightening members (31) (41) of the first and second tightening units (30) (40) due to the tensile force acting on the reinforcing bar (110) are connected to the first and second tapered portions ( 21)
  • the force is applied in the radial direction, that is, in the direction in which the tightening members are expanded.
  • First and second rigid parts 75 and 76 are formed in the first and second tapered parts 21 and 22, which are in close contact with (40), respectively, so that the first and second tapered parts 21 and 22 It is possible to prevent the first and second tapered parts from being damaged by the force in the direction in which they expand.
  • the first and second rigid parts 75 and 76 may be damaged by brittleness due to high-frequency heat treatment, but the first and second soft parts 71 and 72 are the first and second flexible parts with a relatively large expansion force.
  • the end sides of the second rigid portions 75 and 76 are elastically supported to prevent the first and second rigid portions 75 and 76 from being damaged or torn.
  • the thickness of the coupler body 20 is increased as in the past, thereby fundamentally preventing the concrete covering layer of the rebar coupler installation portion from becoming thin.
  • the one-touch rebar coupler with an integrated coupler body can increase structural strength because the coupler body is formed integrally, and the first and second tapered portions of the coupler body are connected to the first and second flexible portions. Since the first and second rigid parts are formed respectively, it is possible to fundamentally prevent both ends of the rebar coupler body from expanding or being damaged due to the tensile force acting in the direction in which the rebars are separated.
  • the one-touch rebar coupler with an integrated coupler body of the present invention is widely applicable not only to connecting rebar during reinforcement, but also to connecting pipes, bolts, sections, rods, etc. used in various industrial facilities.

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Abstract

A one-touch rebar coupler having an integrated-type coupler body according to the present invention comprises: an integrated-type coupler body formed of carbon steel and having formed therein a hollow portion in which first and second tapered portions are pipe-reduced so as to gradually expand and develop from both insertion holes into which rebars are inserted; a first tightening unit provided with first tightening members inserted into the first tapered portion side of the hollow portion; a second tightening unit provided with second tightening members inserted into the second tapered portion side of the hollow portion; an elastic member which is installed between the first and second tightening units to elastically bias the first and second tightening members of the first and second tightening units respectively toward the first and second tapered portions; a first flexible portion having the strength of the first tapered portion in which the pipe-reduction of the integrated coupler body is formed; at least one first rigid portion that is relatively stronger than the first flexible portion in the circumferential direction; a second flexible portion having the strength of the second tapered portion in which the pipe-reduction of the integrated-type coupler body is formed; and at least one second rigid portion that is relatively stronger than the second flexible portion in the circumferential direction.

Description

일체형 커플러바디를 가진 원터치 철근 커플러One-touch rebar coupler with integrated coupler body
본 발명은 원터치 철근 커플러에 관한 것으로, 더 상세하게는 콘크리트 구조물의 건축 시 철근들의 연결을 위한 일체형 커플러바디의 강도가 개선된 일체형 커플러바디를 가진 원터치 철근 커플러에 관한 것이다. The present invention relates to a one-touch rebar coupler, and more specifically, to a one-touch rebar coupler having an integrated coupler body with improved strength for connecting rebars during the construction of a concrete structure.
일반적으로, 건축물의 건설 및 각종 토목공사를 위한 콘크리트 구조물의 제조 시 배근작업을 수행하게 되는데, 이를 위한 철근들은 규격화 된 길이로 제작됨에 따라 배근작업 시 소정길이의 철근들을 상호 연결하는 작업이 동반된다. In general, reinforcement work is performed when manufacturing concrete structures for the construction of buildings and various civil engineering works. As the reinforcing bars for this are manufactured in standardized lengths, the reinforcement work involves interconnecting reinforcing bars of a certain length. .
배근작업 시 철근들을 연결하기 위한 커플러가 대한민국 등록특허 제 101768816호에 게시되어 있으며, 대한민국 등록특허 제 101654150호에는 원터치 철근 커플러가 게시되어 있다.A coupler for connecting reinforcing bars during reinforcement work is published in Korean Patent No. 101768816, and a one-touch rebar coupler is published in Korean Patent No. 101654150.
대한민국 공개특허 제 2019-0002186호에는 커플러 바디가 일체로 형성된 철근커플러가 게시되어 있으며, 대한민국 공개 실용신안 제 2021-000573호에는 원터치식 철근 커플러가 게시되어 있다. Republic of Korea Patent Publication No. 2019-0002186 discloses a rebar coupler in which the coupler body is formed integrally, and Republic of Korea Utility Model Publication No. 2021-000573 discloses a one-touch type rebar coupler.
게시된 바디가 일체로 형성된 철근 커플러는 철근을 삽입할 수 있는 중공부를 포함하는 커플러 바디 및 상기 커플러 바디에 삽입된 철근을 고정하기 위한 너트부를 포함하고, 상기 커플러 바디는, 본체부 상기 본체부의 일측으로 연장되는 제1연장부 및 상기 본체부의 타측으로 연장되는 제2연장부를 포함하고, 상기 커플러 바디는 상기 제1연장부로부터 상기 본체부를 지나 상기 제2연장부까지 연속적으로 형성되는 제1절개부를 포함한다.The rebar coupler in which the posted body is formed as one body includes a coupler body including a hollow part into which a rebar can be inserted and a nut part for fixing the rebar inserted into the coupler body, the coupler body having a main body and one side of the main body part. It includes a first extension part extending to the other side of the main body part and a second extension part extending to the other side of the main body part, and the coupler body has a first incision formed continuously from the first extension part through the main body part to the second extension part. Includes.
이러한 구조의 철근커플러는 바디가 일체로 형성되어 있으나 길이 방향으로 절개되어 너트부와 결합되는 구조를 가지고 있으므로 철근의 결합력을 크게 할 수 없다. 또한 철근을 바디가 파지하는 구조를 가지고 있으므로 초기 슬립량을 줄이는데 한계가 있다.The rebar coupler of this structure has an integral body, but has a structure that is cut in the longitudinal direction and connected to the nut, so the bonding force of the rebar cannot be increased. In addition, since the body has a structure that grips the rebar, there is a limit to reducing the initial slip amount.
대한민국 공개번호 2021-0128953호에 게시된 철근거플러는 내부가 중공됨과 더불어 양측에 철근을 각각 삽입하기 위한 제1 및 제2 삽입구가 형성되는 하우징을 구비하며, 이 하우징은 금속재질의 일체화 된 몸체로 구성되고 제1 및 제2 삽입구 측으로 가면서 내경이 단조적으로 감소하는 구조를 가진다. The rebar gutter published in Republic of Korea Publication No. 2021-0128953 has a housing that is hollow on the inside and has first and second insertion holes for inserting rebar on both sides, respectively. This housing is an integrated body made of metal. It is composed of and has a structure in which the inner diameter monotonically decreases toward the first and second insertion holes.
이러한 철근 커플러의 하우징은 철근들이 결합된 상태에서 길이 방향으로 인장력의 작용 시 철근을 고정하는 고정부재들에 의해 축관된 부위가 확개되는 방향으로 힘을 받게된다. 따라서 하우징의 축관부위가 소성변형되거나 축관부위가 파손되는 문제점이 있으며, 하우징에 대해 철근들의 초기 슬립량이 커지게 되는 문제점이 있다. The housing of this rebar coupler receives force in the direction in which the axial tube area is expanded by the fixing members that secure the rebar when a tensile force is applied in the longitudinal direction while the rebars are combined. Therefore, there is a problem that the shaft pipe portion of the housing is plastically deformed or damaged, and the initial slip amount of the reinforcing bars relative to the housing increases.
본 발명은 상술한 바와 같은 문제점을 해결하기 위한 것으로, 일체로 형성된 커플러 바디의 테이퍼부의 강도를 강화시켜 철근에 인장력의 작용 시 커플러바디의 테이퍼부가 파손되는 것을 방지하고, 결합된 철근의 초기 슬립량을 줄일 수 있는 일체형 커플러바디를 가진 원터치 철근 커플러를 제공함에 있다.The present invention is intended to solve the problems described above, and strengthens the strength of the tapered portion of the coupler body formed as an integrated piece, prevents the tapered portion of the coupler body from being damaged when tensile force is applied to the reinforcing bar, and prevents the initial slip amount of the combined reinforcing bar from being damaged. The aim is to provide a one-touch rebar coupler with an integrated coupler body that can reduce .
본 발명의 다른 목적은 일체로 형성된 커플러바디의 양측의 테이퍼부에 재질고유의 강도를 가지는 연성부와 연성부보다 상대적으로 강한 강성부를 갖도록 함으로써 철근을 파지하는 조임부재의 파지력을 높인 일체형 커플러바디를 가진 원터치 철근 커플러를 제공함에 있다. Another object of the present invention is to provide an integrated coupler body that increases the gripping force of the tightening member that grips the reinforcing bar by having a soft part with inherent strength of the material in the tapered parts on both sides of the integrally formed coupler body and a rigid part that is relatively stronger than the soft part. The aim is to provide a one-touch rebar coupler.
상기 기술적 과제를 해결하기 위한 본 발명의 일체형 커플러바디를 가진 원터치 철근 커플러는 The one-touch rebar coupler with an integrated coupler body of the present invention to solve the above technical problem is
철근이 삽입되는 양측 삽입구 측으로부터 점차적으로 확개되도록 축관이 이루어진 제 1,2테이퍼부를 가지는 중공부가 형성되고 탄소강으로 일루어진 일체형 커플러바디와, 상기 중공부의 제1테이퍼부 측에 삽입되는 제1조임부재들을 구비한 제 1조임유닛과, 상기 중공부의 제2테이퍼부 측에 삽입되는 제 2조임부재들을 구비한 제2조임유닛과, 상기 제1,2조임유닛의 사이에 설치되어 상기 제 1,2조임유닛의 제1,2조임부재들을 상기 제1,2테이퍼부로 각각 탄성바이어스 시키기 위한 탄성부재가 구비되며,An integrated coupler body made of carbon steel with a hollow portion formed having first and second tapered portions with shaft pipes gradually expanding from the insertion ports on both sides into which the reinforcing bars are inserted, and a first clamping member inserted into the first tapered portion of the hollow portion. It is installed between the first tightening unit having a first tightening unit, a second tightening unit having second tightening members inserted into the second tapered portion side of the hollow part, and the first and second tightening units. Elastic members are provided for elastically biasing the first and second tightening members of the tightening unit to the first and second tapered portions, respectively,
상기 일체형 커플러바디의 축관이 이루어진 제 1테이퍼부의 강도를 가지는 제1연성부와, 원주방향으로 제1연성부 보다 상대적 강한 적어도 하나의 제1 강성부가 구비되고,A first flexible portion having the strength of a first tapered portion formed by the shaft pipe of the integrated coupler body, and at least one first rigid portion that is relatively stronger than the first flexible portion in the circumferential direction,
상기 일체형 커플러바디의 축관이 이루어진 제 2테이퍼부의 강도를 가지는 제2연성부와, 원주방향으로 제2연성부보다 상대적 강한 적어도 하나의 제2 강성부가 구비된 것을 그 특징으로 한다. It is characterized in that it is provided with a second flexible part having the strength of the second tapered part where the shaft pipe of the integrated coupler body is formed, and at least one second rigid part that is relatively stronger than the second flexible part in the circumferential direction.
본 발명에 있어서, 상기 제1,2강성부는 상기 제 1,2테이퍼부에 삽입 된 제 1,2조임부재들과 대응되는 외주면에 각각 형성되며, 상기 제1,2연성부는 제1,2테이퍼부의 단부측에 각각 형성된다. In the present invention, the first and second rigid parts are respectively formed on the outer peripheral surface corresponding to the first and second tightening members inserted into the first and second tapered parts, and the first and second flexible parts are formed in the first and second tapered parts. Each is formed on the end side of the section.
상기 제 1,2테이퍼부에 각각 형성된 제1,2강성부는 상기 제 1,2테이퍼부의 외주면이 유도가열수단에 의해 열처리 되어 두께 방향의 표피층에 형성된 된다.The first and second rigid parts formed in the first and second tapered parts, respectively, are formed in the skin layer in the thickness direction by heat-treating the outer peripheral surfaces of the first and second tapered parts by an induction heating means.
본 발명에 따른 일체형 커플러바디를 가진 원터치 철근 커플러는 커플러바디가 단일의 부재로 이루어져 있으므로 종래의 두 개의 부재가 결합되어 이루어짐으로써 결합부위가 약화되는 것을 근본적으로 방지할 수 있다. The one-touch rebar coupler with an integrated coupler body according to the present invention can fundamentally prevent the coupler body from being weakened by combining two conventional members because the coupler body is made of a single member.
또한, 커플러바디의 양단부가 결합된 철근이 분리되는 방향으로 작용하는 인장력에 의해 변형되거나 파손되는 것을 방지할 수 있으며, 특히, 일체형으로 형성된 커플러바디가 신장되면서 발생되는 슬립발생량을 최소화 할 수 있다. 그리고 본 발명에 따른 커플러바디는 콘크리트 구조물을 시공함에 있어서, 커플러바디의 강도보완을 위하여 직경이 커지는 것이 방지되므로 커플러에 의한 철근연결부위의 콘크리트의 타설량이 감소하는 것을 방지할 수 있다. In addition, it is possible to prevent the reinforcing bars coupled to both ends of the coupler body from being deformed or damaged by tensile force acting in the direction in which they are separated, and in particular, the amount of slip occurring as the integrally formed coupler body is stretched can be minimized. In addition, the coupler body according to the present invention prevents the diameter from increasing in order to supplement the strength of the coupler body when constructing a concrete structure, thereby preventing a decrease in the amount of concrete poured at the reinforcing bar connection area by the coupler.
도 1은 본 발명에 따른 일체형 커플러바디를 가진 원터치 철근 커플러의 일부절제 분리 사시도,Figure 1 is a partially cut-off perspective view of a one-touch rebar coupler with an integrated coupler body according to the present invention;
도 2는 도 1에 도시된 일체형 커플러바디를 도시한 일부 절제 사시도. Figure 2 is a partially cut away perspective view showing the integrated coupler body shown in Figure 1.
도 3 및 도 4는 본 발명에 따른 일체형 커플러바디의 다른 실시예들을 각각 도시한 단면도. Figures 3 and 4 are cross-sectional views showing other embodiments of the integrated coupler body according to the present invention, respectively.
도 5는 도 1에 도시된 일체형 커플러바디를 가진 원터치 철근 커플러에 철근이 결합된 상태를 나타내 보인 단면도. Figure 5 is a cross-sectional view showing a state in which reinforcing bars are coupled to the one-touch rebar coupler having an integrated coupler body shown in Figure 1.
본 발명에 따른 일체형 커플러바디를 가진 원터치 철근 커플러의 실시예들을 도 1 내지 도 5에 나타내 보였다.Examples of a one-touch rebar coupler with an integrated coupler body according to the present invention are shown in Figures 1 to 5.
도면을 참조하면, 본 발명에 따른 일체형 커플러바디를 가진 원터치 철근 커플러(10)는 토목 또는 콘크리트 건축물의 시공을 위한 배근 시 철근을 상호 연결하기 위한 것으로, 연결 대상 제1,2철근(110)(120)이 삽입되는 양측의 제1,2삽입구(21a)(22a)와, 상기 제1,2삽입구(21a)(22a) 측으로부터 중앙을 향하여 점차적으로 확개되는 제 1,2테이퍼부(21)(22)와, 길이방향으로 연장되는 중공부(24)를 가지는 일체형 커플러바디(20)를 구비한다. 그리고 상기 일체형 커플러바디(20)의 제 1,2테이퍼부(21)(22)에 해당하는 부위에 각각 형성되는 제1,2강성부(75)(76)와, 상기 제12테이퍼부를 제외한 부분에 각각 형성되는 적어도 하나의 제1,2연성부(71)(72)를 구비한다. 상기 제1연성부(71)(72)는 커플러바디(20)를 이루는 재질의 강도를 가질 수 있고, 상기 제1,2강성부(75)(76)는 상기 연성부보다 상대적으로 강한 재질로 구성될 수 있다. Referring to the drawing, the one-touch rebar coupler (10) with an integrated coupler body according to the present invention is for interconnecting rebars when placing reinforcement for the construction of civil engineering or concrete buildings, and the first and second rebars (110) to be connected ( First and second insertion holes (21a) (22a) on both sides into which 120) is inserted, and first and second tapered portions (21) gradually expanding toward the center from the first and second insertion holes (21a) (22a). (22) and an integrated coupler body (20) having a hollow portion (24) extending in the longitudinal direction. And in the parts excluding the first and second rigid parts (75) and (76) formed in the parts corresponding to the first and second tapered parts (21) and (22) of the integrated coupler body (20), respectively, and the twelfth tapered part. It is provided with at least one first and second flexible portions 71 and 72, respectively. The first soft parts 71 and 72 may have the strength of the material forming the coupler body 20, and the first and second rigid parts 75 and 76 are made of a material that is relatively stronger than the soft part. It can be.
그리고 본 발명에 따른 원터치 철근 커플러는 상기 커플러바디(20)의 중공부(24)에 삽입되어 제1테이퍼부(21)의 내주면과 밀착되며 상기 제1철근(110)을 파지하는 제1조임유닛(30)과, 상기 커플러바디(20)의 중공부(24)에 삽입되어 제2테이퍼부(22)의 내주면과 밀착되며 제 2철근(120)을 파지하기 위한 제2조임유닛(40)을 구비한다. 그리고, 상기 제1,2조임유닛(30)(40)의 사이에는 제1조임유닛(30)과 상기 제 2조임유닛(40의 제1,2조임부재들을 상기 제 1,2삽입구(21a)(22a) 측으로 탄성바이어스 시키기 위한 탄성부재(50)가 설치된다, And the one-touch rebar coupler according to the present invention is inserted into the hollow portion 24 of the coupler body 20, comes into close contact with the inner peripheral surface of the first tapered portion 21, and is a first tightening unit for gripping the first rebar 110. (30) and a second tightening unit (40) that is inserted into the hollow portion (24) of the coupler body (20) and is in close contact with the inner peripheral surface of the second tapered portion (22) and is for gripping the second reinforcing bar (120). Equipped with And, between the first and second tightening units (30) and (40), the first and second tightening members of the first tightening unit (30) and the second tightening unit (40) are inserted into the first and second insertion ports (21a). An elastic member 50 is installed to elastically bias toward (22a).
상술한 바와 같이 구성된 본 발명에 따른 일체형 커플러바디를 가지는 원터치 철근 커플러(10)를 구성요소별로 보다 상세하게 설명하면 다음과 같다.The one-touch rebar coupler 10 having an integrated coupler body according to the present invention configured as described above will be described in more detail for each component as follows.
본 발명에 따른 철근커플러(10)의 커플러바디(20)는 길이 방향의 중심을 관통하는 중공부(24)를 가지는 부재로서, 상술한 제1,2조임유닛(30)(40)과 탄성부재(50)를 삽입하고, 그 양측 부위를 축관하여 제 1,2테이퍼부(21)(22)를 형성한다. 상기 제 1,2테이퍼부(21)(22)는 내측면과 외측면이 모두 테이퍼진 구조를 가진다. 상기 제 1,2테이퍼부(21)(22)의 내주면은 각각 제1,2조임유닛(30)(40)의 외주면과 실질적으로 동일한 각도로 테이퍼진 구조를 가진다. The coupler body 20 of the rebar coupler 10 according to the present invention is a member having a hollow portion 24 penetrating the center in the longitudinal direction, and includes the first and second tightening units 30 and 40 and the elastic member described above. (50) is inserted, and parts on both sides are piped to form the first and second tapered portions (21) and (22). The first and second tapered portions 21 and 22 have both inner and outer surfaces tapered. The inner peripheral surfaces of the first and second tapered portions 21 and 22 have a structure tapered at substantially the same angle as the outer peripheral surfaces of the first and second tightening units 30 and 40, respectively.
이러한 커플러바디(20)의 재질은 탄소강으로 이루어지는데, 탄소강은 KS규격의 S45C, SCM440, SCM450 등의 탄소강을 사용함이 바람직하다. 그러나 이에 한정되지는 않는다.The material of this coupler body 20 is made of carbon steel, and it is preferable to use carbon steel such as KS standard S45C, SCM440, and SCM450. However, it is not limited to this.
한편 상술한 바와 같은 상기 커플러바디(20)의 제1,2테이퍼부(21)(22)에 형성된 제1, 2강성부(75)(76)는 제1조임유닛(30)(40)의 외주면과 대응되는 영역 즉, 후술하는 제1,2조임부재(31)(41)가 파지 대상 철근을 각각 파지한 상태에서 이의 외주면과 대응되는 제1,2테이퍼부(21)(22)을 원주방향으로 고주파열처리하여 표면을 경화시킴으로써 이루어진다.Meanwhile, the first and second rigid parts 75 and 76 formed on the first and second tapered parts 21 and 22 of the coupler body 20 as described above are the outer peripheral surface of the first tightening unit 30 and 40. In the state corresponding to the area, that is, the first and second tightening members (31) (41), which will be described later, each gripping the reinforcing bar to be gripped, the first and second tapered portions (21) (22) corresponding to the outer peripheral surface thereof are moved in the circumferential direction. This is achieved by hardening the surface through induction heat treatment.
상기 제1,2강성부(75)(76)의 고주파열처리는 1 내지 500kHZ의 주파수를 발진시키는 고주파코일을 이용하여 가열한 후 급속냉각 시킴으로써 이루어지는데, 고주파전류의 침투 깊이는 커플러바디(20)를 이루는 탄소강의 투자율과 저항 및 주파수에 의해 결정된다. The high-frequency heat treatment of the first and second rigid parts 75 and 76 is performed by heating and then rapidly cooling using a high-frequency coil that oscillates at a frequency of 1 to 500 kHZ. The penetration depth of the high-frequency current is the coupler body 20. It is determined by the permeability, resistance, and frequency of carbon steel.
따라서 제1, 2강성부(75a)(76a)는 도 3에 도시된 바와 같이 제1, 2테이퍼부(21)(22)의 외주면으로부터 두께의 절반 이상에 주파 전류가 침투되지 않도록 하여 제1,2테이퍼부(21(22)의 외주면 표피층이 열처리될 수 있도록 함이 바람직하다. Therefore, as shown in FIG. 3, the first and second rigid parts 75a and 76a prevent frequency current from penetrating more than half of the thickness from the outer peripheral surface of the first and second tapered parts 21 and 22, thereby preventing the first and second rigid parts 75a and 76a from penetrating the first and second rigid parts 75a and 76a. It is desirable that the skin layer on the outer peripheral surface of the 2-tapered portion 21 (22) can be heat treated.
그러나 이에 한정되지 않고, 도 4에 도시된 바와 같이 상기 제1,2 강성부(75b)(75b)는 1,2테이퍼부(21)(22)의 길이방향으로 소정간격 이격된 상태로 적어도 2개 이상 형성될 수 있다.However, it is not limited to this, and as shown in Figure 4, the first and second rigid parts (75b) (75b) are at least two spaced apart at a predetermined distance in the longitudinal direction of the first and second tapered parts (21) and (22). More than one can be formed.
한편 상기 제1,2 연성부(71)(72)는 커플러바디(20)의 제1,2테이퍼부(21)(22)의 단부측에 위치될 수 있도록 함이 바람직하다. 상기 제 1,2연성부(71)(72)는 커플러바디(20)을 이루는 탄소강으로 이루어질 수 있다. 상기 제1,2연성부(71)(72)는 상기 제1,2강성부(75)(76) 보다 낮은 강도로 열처리됨으로써 이루어질 수도 있다. Meanwhile, the first and second flexible parts 71 and 72 are preferably positioned at the end sides of the first and second tapered parts 21 and 22 of the coupler body 20. The first and second flexible parts 71 and 72 may be made of carbon steel that forms the coupler body 20. The first and second flexible parts 71 and 72 may be heat treated to a lower strength than the first and second rigid parts 75 and 76.
상기 커플러바디(20)을 열처리함에 있어서, 상대적으로 높은 온도로 열처리하는 경우, 커플러바디(20)의 내부에 삽입된 탄성부재(50) 등이 가열되어 탄성부재(50),확장링(81)(82)의 탄성력이 저하될 수 있으므로, 탄성부재들의 탄성력이 저하되지 않도록 320℃ 내지 400℃ 내에서 저온열처리 함이 바람직하다.When heat treating the coupler body 20 at a relatively high temperature, the elastic member 50 inserted into the coupler body 20 is heated to form the elastic member 50 and the expansion ring 81. Since the elasticity of (82) may be reduced, it is preferable to heat treat at a low temperature within 320°C to 400°C to prevent the elasticity of the elastic members from deteriorating.
그리고 커플러바디(20)의 제 1,2테이퍼부(21)(22)를 고주파열처리하여 제1, 2강성부(75)(76)를 형성한 후, 제 1,2강성부의 취성을 줄이기 위하여 고주파 열처리 후에 200℃ 내지 250℃ 이하의 저온 열처리를 수행함이 바람직하다.Then, the first and second tapered parts (21) and (22) of the coupler body (20) are subjected to induction heat treatment to form the first and second rigid parts (75) and (76), and then subjected to high frequency heat treatment to reduce the brittleness of the first and second rigid parts. After heat treatment, it is preferable to perform low-temperature heat treatment of 200°C to 250°C or lower.
상기 커플러바디(20)의 제1,2테이퍼부(21)(22)의 두께는 제 1,2강성부(75)(76)의 열처리를 위하여 조정될 수 있다.The thickness of the first and second tapered parts 21 and 22 of the coupler body 20 may be adjusted for heat treatment of the first and second rigid parts 75 and 76.
한편, 제 1,2조임유닛(30)(40)은 실질적으로 상호 동일한 구조를 가진다. 상기 제 1조임유닛(30)은 상기 제1테이퍼부(21)와 대응되는 제3테이퍼부(32)를 가지며, 커플러바디(20)의 중공부(24)에 삽입되어 제1테이퍼부(21) 측으로 탄성부재(50)에 의해 이동됨으로써 제1철근(110)을 파지력을 제공하기 위한 복수개의 제 1조임부재(31)들을 구비한다. 상기 제1조임유닛(30)은 제1철근(110)의 외주면을 따라 배열되는데, 2개 내지 4개의 제1조임부재(31)들로 이루어질 수 있다. 그러나 이에 한정되지는 않는다. Meanwhile, the first and second tightening units 30 and 40 have substantially the same structure. The first tightening unit 30 has a third tapered portion 32 corresponding to the first tapered portion 21 and is inserted into the hollow portion 24 of the coupler body 20 to insert the first tapered portion 21. ) is provided with a plurality of first clamping members 31 to provide a holding force to the first reinforcing bar 110 by being moved by the elastic member 50 to the side. The first tightening unit 30 is arranged along the outer peripheral surface of the first reinforcing bar 110, and may be composed of two to four first tightening members 31. However, it is not limited to this.
그리고 상기 제 1조임부재(31)들의 하부측에는 제1철근(110)의 파지 시 흐트러짐을 방지하기 위한 자세유지수단으로 지지돌기와 이 지지돌기가 삽입되는 지지홈이 각각 형성될 수도 있다. In addition, a support protrusion and a support groove into which the support protrusion is inserted may be formed on the lower sides of the first reinforcement members 31 as a posture maintenance means to prevent the first reinforcing bar 110 from being disturbed when gripped.
그리고 제 1조임부재(31)의 내주면에는 철근과의 결합을 위하여 복수개의 제1돌기(35)들이 형성될 수 있는데, 이 제1 돌기(35)들은 톱니의 형상으로 형성되거나 하방으로 경사지게 형성될 수 있다. 그리고 제1조임부재(31)들에 형성된 제1돌기(35)들은 각 제1조임부재(31)들의 내주면을 따라 연속적으로 형성될 수 있다.In addition, a plurality of first protrusions 35 may be formed on the inner peripheral surface of the first brace member 31 for coupling with the reinforcing bar, and these first protrusions 35 may be formed in the shape of a sawtooth or inclined downward. You can. And the first protrusions 35 formed on the first tightening members 31 may be formed continuously along the inner peripheral surface of each first tightening member 31.
상기 제 2조임유닛(40)은 상기 제2테이퍼부(22)와 대응되는 제4테이퍼부(42)를 가지며, 커플러바디(20)의 중공부(24)에 삽입되어 제2테이퍼부(22) 측으로 탄성부재(50)에 의해 이동됨으로써 제2철근(120)에 파지력을 제공하는 복수개의 제 2조임부재(41)들을 구비한다. 그리고 제 2조임부재(41)의 내주면에는 제1조임부재(31)와 같이 철근과의 결합을 위하여 복수개의 제2돌기(45)들이 형성된다. The second tightening unit 40 has a fourth tapered portion 42 corresponding to the second tapered portion 22, and is inserted into the hollow portion 24 of the coupler body 20 to insert the second tapered portion 22. ) is provided with a plurality of second tightening members 41 that provide a gripping force to the second reinforcing bar 120 by being moved by the elastic member 50 to the side. And on the inner peripheral surface of the second set member (41), a plurality of second protrusions (45) are formed for coupling with the reinforcing bar, like the first set member (31).
상기 제 1,2조임유닛(30)(40)의 내주면에는 이들을 구성하는 제1조임부재(31)들과 제 2조임부재(42)들을 외측방향으로 확장시키기 위한 확장링(81,82)이 각각 설치될 수 있다.(도 1 참조) On the inner peripheral surface of the first and second tightening units (30) and (40), expansion rings (81, 82) are provided to expand the first tightening members (31) and second tightening members (42) constituting them in the outward direction. Can be installed separately (see Figure 1)
상기 탄성부재(50)는 커플러본체(20)의 중공부(24)에 설치되어 제 1,2조임유닛(30)(40)을 각각 제 1,2테이퍼부(21)(22)를 따라 제 1,2삽입구(21a)(22a)측으로 탄성바이어스 시키기 위한 것으로, 적어도 하나의 스프링으로 이루어질 수 있다. 상기 스프링의 내경은 결합되는 철근의 직경보다 상대적으로 크게 형성함이 바람직하다. The elastic member 50 is installed in the hollow portion 24 of the coupler body 20 to tighten the first and second tightening units 30 and 40 along the first and second tapered portions 21 and 22, respectively. It is intended to elastically bias toward the first and second insertion holes (21a) (22a), and may be made of at least one spring. It is desirable that the inner diameter of the spring be relatively larger than the diameter of the reinforcing bar to which it is coupled.
상기 커플러바디(20)의 중앙부에는 상기 코일 스프링(50)의 중앙부를 관통하는 철근삽입위치 한정부재(25)가 설치된다. 이는 삽입되는 철근의 단부를 지지하여 결합되는 제1,2철근(110)(120)의 결합위치를 한정하게 된다. 상기 철근삽입위치 한정부재(25)는 상기 커플러바디(20)의 중앙부에 결합되는 봉상의 부재로 이루어질 수 있다. 그러나 이에 한정되지 않고, 봉상의 지지핀이 교차되도록 설치될 수도 있다. A reinforcing bar insertion position limiting member 25 penetrating the central part of the coil spring 50 is installed at the center of the coupler body 20. This defines the joining position of the first and second reinforcing bars 110 and 120, which are coupled by supporting the ends of the inserted reinforcing bars. The reinforcing bar insertion position limiting member 25 may be made of a rod-shaped member coupled to the central portion of the coupler body 20. However, it is not limited to this, and the rod-shaped support pins may be installed to cross each other.
한편, 철근삽입위치 한정부재(91)의 중심으로 상기 커플러바디(20)의 양측에 결합되는 제 1,2철근(110)(120)의 삽입상태를 확인하기 위한 제 1,2확인홀(26)(27)이 형성된다. 상기 제 1,2확인홀(26)(27)은 제1,2철근(110)(120)의 결합부를 확인할 수 있도록 원형 또는 타원형 또는 장공의 형태로 형성될 수 있다.On the other hand, first and second confirmation holes (26) for checking the insertion status of the first and second reinforcing bars (110) (120) coupled to both sides of the coupler body (20) with the center of the reinforcing bar insertion position limiting member (91) )(27) is formed. The first and second confirmation holes 26 and 27 may be formed in a circular, oval or elongated shape so as to confirm the joint portion of the first and second reinforcing bars 110 and 120.
상술한 바와 같이 구성된 본 발명에 따른 일체형 커플러바디를 가진 원터치 철근 커플러의 작용을 설명하면 다음과 같다. The operation of the one-touch rebar coupler having an integrated coupler body according to the present invention configured as described above will be described as follows.
먼저, 제1,2철근(110)(120)을 상호 연결하기 위해서는, 단일의 부재로 이루어진 커플러바디(20)의 양측에 형성된 제1,2삽입구(21a)(22a)를 통하여 1,2철근(110)(120)의 단부가 철근삽입위치 한정부재(25)에 접촉되도록 삽입한다.First, in order to interconnect the first and second reinforcing bars 110 and 120, the first and second reinforcing bars are connected through the first and second insertion holes 21a and 22a formed on both sides of the coupler body 20 made of a single member. The ends of (110) (120) are inserted so that they contact the reinforcing bar insertion position limiting member (25).
이와 같이 하면, 제 1,2조임유닛(30)(40)은 탄성부재(50)인 스프링이 압축되면서 후퇴됨과 아울러 제 1,2조임부재(31)(41)들이 확개되면서 철근이 삽입이 이루어진다. 그리고 제1,2철근(110)(120)의 양단부의 삽입이 이루어진 제 1,2조임유닛(30)(40)은 탄성부재(50)인 스프링에 의해 제1,2삽입구(21a)(22a) 측으로 각각 탄성 바이어스 됨으로써 제1,2철근(110)(120)을 파지하게 된다. In this way, the first and second tightening units (30) (40) retract as the spring, which is the elastic member (50), is compressed, and the first and second tightening members (31) (41) expand and the reinforcing bar is inserted. . And the first and second tightening units (30) (40), into which both ends of the first and second reinforcing bars (110) (120) are inserted, are connected to the first and second insertion holes (21a) (22a) by means of springs, which are elastic members (50). ) side, thereby gripping the first and second reinforcing bars 110 and 120, respectively.
상기와 같이 철근 커플러(10)에 의해 제 1,2철근(110)(120)의 결합이 이루어진 상태에서 결합된 제 1,2철근(110)(120)이 분리되는 방향으로 인장력이 작용하게 되면, 상기 제1,2조임유닛(30)(40)를 이루는 제 1조임부재(31)의 제 3테이퍼부(32)와 제 2조임부재(41)의 제 4테이퍼부(42)가 커플러바디(20)의 제1,2테이퍼부(21)(22)의 내주면과 각각 밀착되면서 제 1,2철근(110)(120)의 파지하게 된다. As described above, when the first and second reinforcing bars 110 and 120 are coupled by the reinforcing bar coupler 10, a tensile force is applied in the direction in which the coupled first and second reinforcing bars 110 and 120 are separated. , the third tapered portion 32 of the first tightening member 31 and the fourth tapered portion 42 of the second tightening member 41, which form the first and second tightening units 30 and 40, are coupled to the coupler body. The first and second reinforcing bars 110 and 120 are gripped while being in close contact with the inner peripheral surfaces of the first and second tapered parts 21 and 22 of (20), respectively.
이를 더욱 상세하게 설명하면, 상기와 같이 결합이 이루어진 상태에서 제1,2철근(110)(120)에 인장력이 가하여지게 되면, 제1,2조임유닛(30)(40)이 출구측, 즉 제1,2삽입구(21a)(22a)으로 각각 이동된다. 따라서 제1조임유닛(30)의 제 1조임부재(31)들의 제 3테이퍼부(32)는 제1테이퍼부(21)와 상대 이동되면서 제1철근(110)의 외주면측으로 가압된다. 그리고 제2조임유닛(40)의 제 2조임부재(41)들의 제 4테이퍼부(42)는 제2테이퍼부(21)와 상대 이동되면서 제2철근(120)의 외주면측으로 가압된다. To explain this in more detail, when tension is applied to the first and second reinforcing bars (110) and (120) in the combined state as described above, the first and second tightening units (30) and (40) are moved to the outlet side, that is. It is moved to the first and second insertion holes 21a and 22a, respectively. Accordingly, the third tapered portion 32 of the first tightening members 31 of the first tightening unit 30 is moved relative to the first tapered portion 21 and is pressed toward the outer peripheral surface of the first reinforcing bar 110. And the fourth tapered portion 42 of the second tightening members 41 of the second tightening unit 40 is moved relative to the second tapered portion 21 and is pressed toward the outer peripheral surface of the second reinforcing bar 120.
상기와 같이 파지된 제1,2철근(110)(120)에 작용하는 인장력이 커지게 되면, 상기 커플러바디(20)의 제 1,2테이퍼부(21)(22)가 확장되고 이 외력이 탄성변형의 한계와 소성변형의 한계를 넘게되면 변형 또는 파손되는데, 본 발명에 따른 커플러 바디(20)의 제1,2테이퍼부(21)(22)에는 제 1,2강성부(75)(76)가 각각 형성되고, 제1,2테이퍼부(21)(22)의 단부 측에 제 1,2연성부(71)(72)가 각각 형성되어 있으므로 커플러바디(20)의 제1,2테이퍼부(21)(22)가 파손되거나 찢어지는 것을 방지할 수 있다. When the tensile force acting on the first and second reinforcing bars 110 and 120 held as described above increases, the first and second tapered portions 21 and 22 of the coupler body 20 expand and this external force When the limits of elastic deformation and plastic deformation are exceeded, they are deformed or damaged. The first and second tapered parts 21 and 22 of the coupler body 20 according to the present invention have first and second rigid parts 75 and 76. ) are formed, respectively, and first and second flexible parts 71 and 72 are formed on the end sides of the first and second tapered parts 21 and 22, respectively, so that the first and second tapers of the coupler body 20 It is possible to prevent the parts 21 and 22 from being damaged or torn.
이를 더욱 상세하게 설명하면, 철근(110)에 작용하는 인장력에 의해 제1,2조임유닛(30)(40)의 제1,2조임부재(31)(41)들은 제1,2테이퍼부(21)(22)의 출구측으로 이송력이 작용함과 아울러 반경방향 즉, 조임부재들이 확개되는 방향으로 힘이 작용하게 되는데, 상기 커플러바디(20)에 삽입된 제 1,2조임부재(30)(40)와 밀착(대응)되는 제 1, 2테이퍼부(21)(22)에는 제 1,2강성부(75)(76)가 각각 형성되어 있으므로 제1,2테이퍼부(21)(22)에 확개되는 방향의 작용력에 의하여 제1,2테이퍼부가 손상되는 것을 방지할 수 있다. 이러한 과정에서 상기 제 1,2 강성부(75)(76)는 고주파 열처리에 의해 취성에 의해 파손될 수 있으나 상기 제1,2연성부(71)(72)가 상대적으로 확개력이 크게 작용하는 제1,2강성부(75)(76)의 단부측을 신축가능하게 지지하여 제1,2강성부(75)(76)가 파손되거나 찢어지는 것을 방지하게 된다. To explain this in more detail, the first and second tightening members (31) (41) of the first and second tightening units (30) (40) due to the tensile force acting on the reinforcing bar (110) are connected to the first and second tapered portions ( 21) In addition to the transfer force acting on the outlet side of (22), the force is applied in the radial direction, that is, in the direction in which the tightening members are expanded. The first and second tightening members 30 inserted into the coupler body 20 First and second rigid parts 75 and 76 are formed in the first and second tapered parts 21 and 22, which are in close contact with (40), respectively, so that the first and second tapered parts 21 and 22 It is possible to prevent the first and second tapered parts from being damaged by the force in the direction in which they expand. In this process, the first and second rigid parts 75 and 76 may be damaged by brittleness due to high-frequency heat treatment, but the first and second soft parts 71 and 72 are the first and second flexible parts with a relatively large expansion force. , The end sides of the second rigid portions 75 and 76 are elastically supported to prevent the first and second rigid portions 75 and 76 from being damaged or torn.
이는 제1,2철근(110)(120)이 상호 분리되는 방향으로의 슬립량을 줄일 수 있으며, 종래와 같이 커플러 바디(20)가 변형되는 것을 방지하기 위하여 커플러 바디(20)의 전체를 열처리하여야 하거나 커플러 바디의 두께를 상대적으로 두껍게 설계하여 생산원가를 상승시키는 요인을 근본적으로 해결할 수 있다. This can reduce the amount of slip in the direction in which the first and second reinforcing bars 110 and 120 are separated from each other, and the entire coupler body 20 is heat treated to prevent the coupler body 20 from being deformed as in the past. The factors that increase production costs can be fundamentally solved by designing the thickness of the coupler body to be relatively thick.
특히, 초기 슬립량을 줄이기 위하여 종래와 같이 커플러바디(20) 두께를 두껍게 함으로써 철근커플러 설치부의 콘크리트 피복층이 얇아지는 것을 근본적으로 방지할 수 있다. In particular, in order to reduce the amount of initial slip, the thickness of the coupler body 20 is increased as in the past, thereby fundamentally preventing the concrete covering layer of the rebar coupler installation portion from becoming thin.
이상에서 설명한 바와 같이 본 발명에 따른 일체형 커플러바디를 가진 원터치 철근 커플러는 커플러바디가 일체로 형성되어 있으므로 구조적 강도를 높일 수 있으며, 커플러바디의 제1,2테이퍼부에 제 1,2연성부와 제1,2강성부가 각각 형성되어 있으므로 철근들이 분리되는 방향으로 작용하는 인장력에 의해 철근 커플러 바디의 양단부측이 확장되거나 파손되는 것을 근본적으로 방지할 수 있다. As described above, the one-touch rebar coupler with an integrated coupler body according to the present invention can increase structural strength because the coupler body is formed integrally, and the first and second tapered portions of the coupler body are connected to the first and second flexible portions. Since the first and second rigid parts are formed respectively, it is possible to fundamentally prevent both ends of the rebar coupler body from expanding or being damaged due to the tensile force acting in the direction in which the rebars are separated.
본 발명은 도면에 도시된 실시예를 참고로 설명되었으나 이는 예시적인 것에 불과하며, 본 기술 분야의 통상의 지식을 가진 사람이라면 이로부터 다양한 변형 및 균등한 타 실시예가 가능하다는 점을 이해할 것이다. The present invention has been described with reference to the embodiments shown in the drawings, but these are merely exemplary, and those skilled in the art will understand that various modifications and other equivalent embodiments are possible therefrom.
따라서, 본 발명의 진정한 기술적 보호 범위는 첨부된 등록 청구 범위의 기술적 사상에 의해 정해져야 할 것이다.Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the attached registered claims.
본 발명의 일체형 커플러 바디를 가진 원터치 철근 커플러는 배근 시 철근의 연결 뿐만아니라 각종 산업시설에 사용되는 파이프, 볼트, 형강, 로드 등의 연결에도 널리 적용 가능하다. The one-touch rebar coupler with an integrated coupler body of the present invention is widely applicable not only to connecting rebar during reinforcement, but also to connecting pipes, bolts, sections, rods, etc. used in various industrial facilities.

Claims (6)

  1. 철근이 삽입되는 양측 삽입구 측으로부터 점차적으로 확개되도록 축관이 이루어진 제 1,2테이퍼부를 가지는 중공부가 형성되고 탄소강으로 일루어진 일체형 커플러바디와, 상기 중공부의 제1테이퍼부 측에 삽입되는 제1조임부재들을 구비한 제 1조임유닛과, 상기 중공부의 제2테이퍼부 측에 삽입되는 제 2조임부재들을 구비한 제2조임유닛과, 상기 제1,2조임유닛의 사이에 설치되어 상기 제 1,2조임유닛의 제1,2조임부재들을 상기 제1,2테이퍼부로 각각 탄성바이어스 시키기 위한 탄성부재가 구비되며,An integrated coupler body made of carbon steel and having a hollow portion formed with first and second tapered portions where the shaft pipe gradually expands from the insertion ports on both sides where the reinforcing bar is inserted, and a first clamping member inserted into the first tapered portion of the hollow portion. It is installed between the first tightening unit having a first tightening unit, a second tightening unit having second tightening members inserted into the second tapered portion side of the hollow part, and the first and second tightening units. Elastic members are provided for elastically biasing the first and second tightening members of the tightening unit to the first and second tapered portions, respectively,
    상기 일체형 커플러바디의 축관이 이루어진 제 1테이퍼부의 강도를 가지는 제1연성부와, 원주방향으로 제1연성부 보다 상대적 강한 적어도 하나의 제1 강성부가 구비되고,A first flexible portion having the strength of a first tapered portion formed by the shaft pipe of the integrated coupler body, and at least one first rigid portion that is relatively stronger than the first flexible portion in the circumferential direction,
    상기 일체형 커플러바디의 축관이 이루어진 제 2테이퍼부의 강도를 가지는 제2연성부와, 원주방향으로 제2연성부 보다 상대적 강한 적어도 하나의 제2 강성부가 구비된 것을 특징으로 하는 일체형 커플러바디를 가진 원터치 철근 커플러. A one-touch device having an integrated coupler body, characterized in that it is provided with a second flexible part having the strength of a second tapered part where the shaft tube of the integrated coupler body is formed, and at least one second rigid part that is relatively stronger than the second flexible part in the circumferential direction. Rebar coupler.
  2. 제 1항에 있어서,According to clause 1,
    상기 제1,2강성부는 상기 제 1,2테이퍼부에 삽입 된 제 1,2조임부재와 대응되는 외주면에 각각 형성되며, 상기 제1,2연성부는 제1,2테이퍼부의 단부측에 각각 형성된 것을 특징으로 하는 일체형 커플러바디를 가진 원터치 철근 커플러. The first and second rigid portions are respectively formed on outer peripheral surfaces corresponding to the first and second tightening members inserted into the first and second tapered portions, and the first and second flexible portions are formed on end sides of the first and second tapered portions, respectively. A one-touch rebar coupler with an integrated coupler body.
  3. 제 1항에 있어서,According to clause 1,
    상기 제1,2강성부는 상기 제 1,2테이퍼부에 삽입 된 제 1,2조임부재와 대응되는 외주면에 각각 형성되며, 상기 제1,2연성부는 제1,2테이퍼부의 내주면에 각각 형성된 것을 특징으로 하는 일체형 커플러바디를 가진 원터치 철근 커플러. The first and second rigid parts are respectively formed on the outer peripheral surface corresponding to the first and second tightening members inserted into the first and second tapered parts, and the first and second flexible parts are respectively formed on the inner peripheral surface of the first and second tapered parts. A one-touch rebar coupler with an integrated coupler body.
  4. 제 2항에 있어서,According to clause 2,
    상기 커플러바디의 제1,2테이퍼부에 형성된 제 1,2강성부는 제 1,2테이퍼부를 고주유도가열수단에 의해 열처리되어 형성된 것을 특징으로 하는 일체형 커플러바디를 가진 원터치 철근 커플러. A one-touch rebar coupler with an integrated coupler body, characterized in that the first and second rigid parts formed in the first and second tapered parts of the coupler body are formed by heat treating the first and second tapered parts by high-maintenance induction heating means.
  5. 제 1항에 있어서,According to clause 1,
    상기 커플러바디의 제1,2테이퍼부에 각각 형성된 제 1,2강성부는 제 1,2테이퍼부의 외주의 표층에 형성한 것을 특징으로 하는 일체형 커플러바디를 가진 원터치 철근 커플러.A one-touch rebar coupler with an integrated coupler body, characterized in that the first and second rigid parts formed in the first and second tapered parts of the coupler body, respectively, are formed on the surface layer of the outer circumference of the first and second tapered parts.
  6. 제 1항에 있어서,According to clause 1,
    상기 커플러바디의 제1,2테이퍼부에 각각 형성된 제 1,2강성부는 제 1,2테이퍼부의 외주의 표층에 형성되고,The first and second rigid parts respectively formed in the first and second tapered parts of the coupler body are formed on the outer periphery of the first and second tapered parts,
    상기 제1,2연성부는 제1,2테이퍼부의 단부측에 각각 형성된 것을 특징으로 하는 일체형 커플러바디를 가진 원터치 철근 커플러. A one-touch rebar coupler with an integrated coupler body, wherein the first and second flexible parts are formed on end sides of the first and second tapered parts, respectively.
PCT/KR2023/006066 2022-07-26 2023-05-03 One-touch rebar coupler having integrated-type coupler body WO2024025092A1 (en)

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