KR20100007775U - Pipe coupling unit - Google Patents

Pipe coupling unit Download PDF

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Publication number
KR20100007775U
KR20100007775U KR2020090000868U KR20090000868U KR20100007775U KR 20100007775 U KR20100007775 U KR 20100007775U KR 2020090000868 U KR2020090000868 U KR 2020090000868U KR 20090000868 U KR20090000868 U KR 20090000868U KR 20100007775 U KR20100007775 U KR 20100007775U
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KR
South Korea
Prior art keywords
pipe
bolt
pipes
support
present
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KR2020090000868U
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Korean (ko)
Inventor
박상목
박정훈
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박상목
박정훈
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Priority to KR2020090000868U priority Critical patent/KR20100007775U/en
Publication of KR20100007775U publication Critical patent/KR20100007775U/en

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    • 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
    • F16B7/04—Clamping or clipping connections
    • F16B7/044—Clamping or clipping connections for rods or tubes being in angled relationship
    • F16B7/048—Clamping or clipping connections for rods or tubes being in angled relationship for rods or for tubes without using the innerside thereof
    • F16B7/0493—Clamping or clipping connections for rods or tubes being in angled relationship for rods or for tubes without using the innerside thereof forming a crossed-over connection
    • 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
    • F16B2/00—Friction-grip releasable fastenings
    • F16B2/02—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening
    • 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
    • F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
    • F16B23/0007—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool
    • F16B23/0023—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool substantially cross-shaped
    • 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
    • F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
    • F16B23/0007—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool
    • F16B23/0038—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool substantially prismatic with up to six edges, e.g. triangular, square, pentagonal, Allen-type cross-sections
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
    • F16L3/08—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
    • F16L3/085—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing for pipes being in an angled relationship to each other
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/25—Greenhouse technology, e.g. cooling systems therefor

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

본 고안은 비닐하우스 등을 지지용으로 사용하기 위해서 서로 교차되게 파이프를 설치할 때 이들 교차되는 파이프를 상호 결합하는 용도로 사용하는 파이프 체결구에 관한 것으로서, 구성이 간단하면서도 견고한 고정 상태를 유지할 수 있는 파이프 체결구를 제공코자 하는 것이다.The present invention relates to a pipe fastener used for joining these crossed pipes to each other when installing the pipes to cross each other in order to support the plastic house, etc. To provide a pipe fastener.

즉, 본 고안은 교차하는 2개의 파이프(10,11) 중 아래쪽 파이프(10)가 내입되는 홈(2)이 형성되게 2개의 지지간(3,4)을 산형으로 강선을 절곡 구성한 파이프 체결구(1)에 있어서, 상기 절곡된 양측 지지간(3,4)의 단부에는 각각 조립공(5a)과 나사공(6a)이 각각 형성된 고정편(5,6)을 형성하며, 상기 나사공(6a)에는 조립공(5a)을 통해서 삽입되는 볼트(7)가 체결되며, 상기 나사공(6a)의 외측으로 노출되는 볼트(7)에 풀림방지용 너트(8)를 조립한 것으로서, 설치 작업시간을 대폭 줄일 수 있고, 파이프의 견고한 고정 상태를 유지할 수 있는 것이다.In other words, the present invention is a pipe fastener formed by bending the steel wire in the form of a mountain between the two support rods (3,4) to form a groove (2) in which the lower pipe (10) is interposed between the two pipes (10,11) In (1), end portions of the bent sides of the support portions (3, 4) are formed with fixing pieces (5, 6) formed with assembly holes (5a) and screw holes (6a), respectively, and the screw holes (6a) ) Is fastened to the bolt (7) inserted through the assembly hole (5a), the loosening prevention nut (8) is assembled to the bolt (7) exposed to the outside of the screw hole (6a), significantly reducing the installation work time It can be reduced, and the pipe can be fixed firmly.

파이프, 파이프 체결구, 지지간, 볼트, 고정편 Pipes, Pipe Fasteners, Supports, Bolts, Fasteners

Description

파이프 체결구{Pipe coupling unit}Pipe coupling unit

본 고안은 비닐하우스 등을 지지용으로 사용하기 위해서 서로 교차되게 파이프를 설치할 때 이들 교차되는 파이프를 상호 결합하는 용도로 사용하는 파이프 체결구에 관한 것으로서, 보다 구체적으로는 구성이 간단하면서도 견고한 고정 상태를 유지할 수 있는 파이프 체결구를 제공코자 하는 것이다.The present invention relates to a pipe fastener used for mutually coupling these crossed pipes when installing the pipes to cross each other in order to support the plastic house, etc. More specifically, the configuration is simple but firmly fixed To provide a pipe fastener that can maintain.

농사용 등으로 사용하는 비닐하우스의 경우 파이프를 이용하여 골조를 세우고, 그 외부에 비닐을 씌우는 구성이다.In the case of a vinyl house used for farming, a frame is erected using a pipe and the vinyl is covered on the outside.

상기와 같은 골조의 경우 호형 파이프를 일정간격으로 지면에 세우고, 이들 호형 파이프들과 직각방향으로 일자형 파이프를 결합하여 고정하게 되는데, 이때 파이프들을 교차 상태로 고정하기 위해서 파이프 체결구를 사용하게 된다.In the case of the frame as described above, the arc-shaped pipes are erected on the ground at regular intervals, and the straight pipes are coupled to each other in a direction perpendicular to the arc-shaped pipes, and the pipe fasteners are used to fix the pipes in a cross state.

일반적으로 널리 사용되고 있는 파이프 체결구는 본 고안자가 선출원 등록( 20-0070595호)한 바 있으나, 상기한 선등록 고안은 일측 파이프가 내입되는 홈이 형성되게 2개의 지지간을 산형으로 절곡하고, 이들 지지간 단부에 나사를 형성하 며, 나사에는 밴드를 결합하여 너트를 나사에 체결할 때 교차하는 2개의 파이프가 가압 고정되도록 구성되어 있다.In general, pipe fasteners that are widely used have been registered by the present inventors (No. 20-0070595), but the above-described pre-designed bends are formed in the form of grooves in which two pipes are inserted, and the support members are bent in a mountain shape. A screw is formed at the end of the liver, and the screw is configured such that two pipes intersecting when the nut is fastened to the screw by engaging a band are fixed.

그러나 상기한 선등록고안의 경우 밴드를 별도로 제작해야 하고, 설치 작업시간이 많이 소요되며, 파이프의 흔들림에 의해 너트가 풀려지는 등 다수의 문제점이 있었다.However, in the case of the pre-registration proposal, the band has to be manufactured separately, and installation work takes a lot of time, and there are a number of problems such as loosening of the nut by shaking the pipe.

근자에는 설치 편리성을 제공하는 제품들이 다수 출시되고 있으며, 대표적인 예로는 도 1에 도시된 바와 같은 파이프 체결구(100)이다.In recent years, a number of products that provide installation convenience have been released, and a representative example is a pipe fastener 100 as shown in FIG. 1.

이는 일측 파이프(110)가 내입되는 홈(101)이 형성되게 2개의 지지간(102,103)을 산형으로 절곡하여 교차하는 파이프(120)의 상측을 감싸게 하고, 절곡된 양측 지지간(102,103)의 단부에는 파이프(110)를 받쳐주는 안치홈(102a,103a)을 형성하여 지지간(102,103)의 탄성에 의해 파이프(110)를 가압 고정할 수 있게 한 것이다.This bends the two support rods 102 and 103 in a mountain shape so as to form a groove 101 into which one side pipe 110 is inserted, and wraps the upper side of the intersecting pipe 120, and ends of the bent both support legs 102 and 103. In the forming grooves (102a, 103a) to support the pipe 110 is to be able to press the fixed fixing of the pipe 110 by the elasticity of the support (102, 103).

상기한 파이프 체결구(100)의 경우 설치 편리성 등을 보장할 수 있으나, 파이프(110) 아래쪽으로 지지간(102,103)에 형성되어 있는 안치홈(102a,103a)을 조립하는 과정에서 지지간(102,103)의 탄성력을 상실하게 되는 경우가 빈번하게 발생하는 등 교차하는 파이프(110,120)의 견고한 고정 상태를 보장하기가 어려웠다.In the case of the pipe fastener 100, it is possible to ensure the convenience of installation, etc., but in the process of assembling the settling grooves (102a, 103a) formed in the support section (102, 103) below the pipe (110) It is difficult to ensure a firm fixed state of the pipes 110 and 120 to cross, such as frequent loss of the elastic force of the 102,103.

이에 본 고안자는 상기한 종래 문제점을 일소코자 본 고안을 안출한 것으로 서, 본 고안에서는 구성이 간단하면서도 견고한 고정 상태를 유지할 수 있는 파이프 체결구를 제공함에 고안의 기술적 과제를 두고 본 고안을 완성한 것이다.The present inventors have devised the present invention to solve the above-described conventional problems, and the present invention has completed the present invention with the technical problem of the present invention in providing a pipe fastener that can maintain a simple and robust fixed state. .

과제 해결 수단으로 본 고안에서는 지지간의 양 단부에 고정편을 단조 형성하고, 이에 조립공과 나사공을 각각 형성하여 볼트를 체결할 수 있게 하고, 체결된 볼트에 너트를 체결하여 파이프가 흔들리는 등의 이유로 볼트가 풀려지지 않게 하였다.As a means for solving the problem, in the present invention, the fixing pieces are forged at both ends of the support, the assembly holes and the screw holes are formed, respectively, so that the bolts can be fastened, and the nut is fastened to the fastened bolts, causing the pipe to shake. The bolts did not loosen.

본 고안에서 제공하는 파이프 체결구에 의하면 설치 작업시간을 대폭 줄일 수 있고, 파이프의 견고한 고정 상태를 유지할 수 있는 등 기대되는 효과가 다대한 매우 유용한 고안이다. According to the pipe fastener provided in the present invention, it is possible to greatly reduce the installation work time, and to maintain a firm fixed state of the pipe.

본 고안은 일측 파이프가 내입되는 홈이 형성되게 2개의 지지간을 산형으로 절곡한 강선으로 구성한 파이프 체결구에 있어서,The present invention is a pipe fastener composed of a steel wire bent in the form of a mountain between the two support intervals to form a groove into which one pipe is inserted,

상기 절곡된 양측 지지간의 단부에는 각각 조립공과 나사공이 각각 형성된 고정편을 형성하며, 상기 나사공에는 조립공을 통해서 삽입되는 볼트가 체결되며, 상기 나사공의 외측으로 노출되는 볼트에 풀림방지용 너트를 조립한 것을 특징으로 한다.At each end of the bent both sides of the support is formed a fixing piece each formed with an assembling hole and a screw hole, the screw hole is fastened to the bolt is inserted through the assembly hole, the loosening nut is assembled to the bolt exposed to the outside of the screw hole It is characterized by one.

이하에서 첨부된 도면에 의거하여 본 고안의 구성을 설명한다.Hereinafter, the configuration of the present invention based on the accompanying drawings.

도 2는 본 고안에서 제공하는 파이프 체결구의 바람직한 일 실시예를 보인 사시도를 도시한 것이고, 도 3은 본 고안에 의해 파이프가 체결된 상태의 정단면도를 도시한 것이며, 도 4a, 4b는 본 고안에 의해 파이프가 체결된 상태의 측단면도를 도시한 것이다.Figure 2 shows a perspective view showing a preferred embodiment of the pipe fastener provided in the present invention, Figure 3 shows a front sectional view of the pipe fastened state by the present invention, Figure 4a, 4b is the present invention It shows the side cross-sectional view of the state in which the pipe is fastened by.

본 고안에서 제공하는 파이프 체결구(1)는 도시된 바와 같이 강선을 절곡하여 구성하는 것으로서, 일측 파이프(10)가 내입되는 홈(2)이 형성되게 2개의 지지간(3,4)을 산형으로 절곡한 구성으로 이루어져 있다.Pipe fastener (1) provided in the present invention is configured to bend the steel wire as shown, and the two support rods (3, 4) to form a groove (2) in which one side pipe 10 is embedded Consists of a bent configuration.

상기와 같이 절곡된 지지간(3,4)의 단부에는 조립공(5a)과 나사공(6a)이 각각 형성된 고정편(5,6)을 형성하며, 상기 고정편(5,6)은 강선을 냉간단조 하여 형성한다.At the ends of the support bars 3 and 4 bent as described above, fixing pieces 5 and 6 having assembly holes 5a and screw holes 6a are formed, respectively, and the fixing pieces 5 and 6 are steel wires. It is formed by cold forging.

상기 나사공(6a)에는 조립공(5a)을 통해서 삽입되는 볼트(7)가 체결되며, 나사공(6a)에 체결된 볼트(7)에는 풀림방지용 너트(8)를 조립하여 볼트(7)가 풀어지는 것을 방지할 수 있게 한 구성이다.A bolt 7 inserted through the assembly hole 5a is fastened to the screw hole 6a, and a bolt 7 is assembled to the bolt 7 fastened to the screw hole 6a by assembling an anti-loosening nut 8. It is the structure which prevented loosening.

상기 볼트(7)는 작업현장에서 다양한 공구를 사용할 수 있게 구성되어 있다.The bolt 7 is configured to be able to use a variety of tools in the workplace.

즉, 육각형으로 볼트머리(7a)가 형성되며, 볼트머리(7a)에는 육각렌치홈(7b)이 형성되고, 육각렌치홈(7b)의 바닥에는 드라이브 결합홈(7c)이 십자 형상으로 형성된 구성이다.That is, the hexagonal bolt head (7a) is formed, the hexagonal wrench groove (7b) is formed in the bolt head (7a), the drive coupling groove (7c) is formed in the cross shape at the bottom of the hexagonal wrench groove (7b) to be.

또한 볼트(7)의 선단에는 원뿔형의 안내돌기(7d)를 형성한다. 상기 안내돌 기(7d)의 경우 조립공(5a)을 통과한 볼트(7)가 나사공(6a)에 자연스럽게 안내 결합될 수 있게 유도하는 역할을 하게 되는 것이다At the tip of the bolt 7, a conical guide protrusion 7d is formed. In the case of the guide protrusion (7d) is to guide the bolt (7) passing through the assembly hole (5a) to be guided naturally to the screw hole (6a)

이상과 같이 구성되는 본 고안으로 교차하는 파이프(10,11)를 체결 고정코자 할 시에는 도시된 바와 같이 홈(2)에 아래쪽 파이프(10)가 내입된 상태에서 2개의 지지간(3,4)이 위쪽 파이프(11)를 감싸게 한다.In order to fasten and fix the pipes 10 and 11 intersecting with the present invention configured as described above, as shown in the drawing, the two support rods 3 and 4 in the state where the lower pipe 10 is embedded in the groove 2 are shown. ) Wraps around the upper pipe (11).

이때 양측 지지간(3,4)의 단부에 있는 고정편(5,6)은 아래쪽 파이프(10) 보다 아래에 위치하는데, 이런 상태에서 볼트(7)를 조립하면 된다.At this time, the fixing pieces (5, 6) at the ends of the two support bars (3, 4) is located below the lower pipe (10), in this state is to assemble the bolt (7).

즉, 도 4a에 도시된 바와 같이 파이프(10) 보다 아래쪽에 양측 지지간(3,4)에 형성되어 있는 고정편(5,6)이 위치된 상태에서 조립공(5a)으로 볼트(7)를 내입하여 나사공(6a)에 체결한다.That is, as shown in FIG. 4A, the bolts 7 are mounted to the assembly holes 5a in a state in which the fixing pieces 5 and 6 formed at both support sections 3 and 4 are positioned below the pipe 10. It is inserted in and fastened to the screw hole 6a.

상기 볼트(7)를 나사공(6a)에 체결할 경우 양측 지지간(3,4)은 도 4b와 같이 아래쪽 파이프(10) 쪽으로 조금 휘어지면서 두 파이프(10,11)가 견고하게 고정된다.When the bolt 7 is fastened to the screw hole 6a, both support sections 3 and 4 are slightly bent toward the lower pipe 10 as shown in FIG. 4B, and the two pipes 10 and 11 are firmly fixed.

그리고 본 고안에서는 볼트(7)를 체결한 상태에서 풀림방지용 너트(8)가 재차 체결되므로 체결 고정된 파이프(10,11)의 흔들림이 있더라도 볼트(7)가 임의로 풀려지지 않게 되는 것이다.In the present invention, since the nut 8 for preventing loosening is fastened again in the state in which the bolt 7 is fastened, the bolt 7 is not loosened arbitrarily even if the fastened fixed pipes 10 and 11 are shaken.

도 1은 종래 파이프 체결구의 사시도1 is a perspective view of a conventional pipe fastener

도 2는 본 고안에서 제공하는 파이프 체결구의 바람직한 일 실시예를 보인 사시도Figure 2 is a perspective view showing a preferred embodiment of the pipe fastener provided in the present invention

도 3은 본 고안에 의해 파이프가 체결된 상태의 정단면도Figure 3 is a front cross-sectional view of the pipe fastened state by the present invention

도 4a는 본 고안에 의해 파이프가 체결된 상태의 측단면도로서 볼트를 체결하기 전 상태도Figure 4a is a side cross-sectional view of a state in which the pipe is fastened by the present invention before the fastening the bolt

도 4b는 본 고안에 의해 파이프가 체결된 상태의 측단면도로서 볼트를 체결한 상태도Figure 4b is a side cross-sectional view of a state in which the pipe is fastened by the present invention is a state of fastening the bolt

■도면의 주요부분에 사용된 부호의 설명 ■Explanation of symbols used in main part of drawing

1:파이프 체결구 2:홈1: Pipe fastener 2: Groove

3,4:지지간 5,6:고정편3, 4: support span 5, 6: fixed piece

5a:조립공 6a:나사공5a: Assembly 6a: Screw

7:볼트 8:풀림방지용 너트7: Bolt 8: Loosen nut

10,11:파이프10,11: pipe

Claims (2)

교차하는 2개의 파이프(10,11) 중 아래쪽 파이프(10)가 내입되는 홈(2)이 형성되게 2개의 지지간(3,4)을 산형으로 강선을 절곡 구성한 파이프 체결구(1)에 있어서,In the pipe fastener (1) formed by bending the steel wire in the form of a mountain to form the groove (2) into which the lower pipe (10) is inserted among the two pipes (10, 11) intersecting. , 상기 절곡된 양측 지지간(3,4)의 단부에는 각각 조립공(5a)과 나사공(6a)이 각각 형성된 고정편(5,6)을 형성하며,At the ends of the bent both sides of the support (3, 4) to form a fixing piece (5, 6) formed with assembly holes (5a) and screw holes (6a), respectively, 상기 나사공(6a)에는 조립공(5a)을 통해서 삽입되는 볼트(7)가 체결되며, The screw hole (6a) is fastened to the bolt (7) inserted through the assembly hole (5a), 상기 나사공(6a)의 외측으로 노출되는 볼트(7)에 풀림방지용 너트(8)를 조립한 것을 특징으로 하는 파이프 체결구.Pipe fasteners characterized in that the loosening prevention nut (8) is assembled to the bolt (7) exposed to the outside of the screw hole (6a). 제 1항에 있어서,The method of claim 1, 상기 볼트(7)는 볼트머리(7a)에 육각렌치홈(7b)을 형성하고, 육각렌치홈(7b)의 바닥에 십자 형상으로 드라이브 결합홈(7c)을 형성하며, 선단에는 원뿔형의 안내돌기(7d)를 형성한 것을 특징으로 하는 파이프 체결구.The bolt 7 forms a hexagonal wrench groove 7b in the bolt head 7a, and forms a drive coupling groove 7c in a cross shape at the bottom of the hexagonal wrench groove 7b, and has a conical guide protrusion at the tip. A pipe fastener, wherein 7d is formed.
KR2020090000868U 2009-01-23 2009-01-23 Pipe coupling unit KR20100007775U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111648591A (en) * 2020-06-30 2020-09-11 中国二十二冶集团有限公司 Turnover double-rib type cantilever steel beam fixing device and construction method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111648591A (en) * 2020-06-30 2020-09-11 中国二十二冶集团有限公司 Turnover double-rib type cantilever steel beam fixing device and construction method thereof

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