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WO2020045749A1 - Raccord de tuyau permettant de vérifier l'état de fixation - Google Patents

Raccord de tuyau permettant de vérifier l'état de fixation Download PDF

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Publication number
WO2020045749A1
WO2020045749A1 PCT/KR2018/015158 KR2018015158W WO2020045749A1 WO 2020045749 A1 WO2020045749 A1 WO 2020045749A1 KR 2018015158 W KR2018015158 W KR 2018015158W WO 2020045749 A1 WO2020045749 A1 WO 2020045749A1
Authority
WO
WIPO (PCT)
Prior art keywords
bolt
hole
flange
pipe coupling
pipes
Prior art date
Application number
PCT/KR2018/015158
Other languages
English (en)
Korean (ko)
Inventor
김덕모
김주환
Original Assignee
주식회사 코리아조인트
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 코리아조인트 filed Critical 주식회사 코리아조인트
Publication of WO2020045749A1 publication Critical patent/WO2020045749A1/fr

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Classifications

    • 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
    • F16L21/00—Joints with sleeve or socket
    • F16L21/06—Joints with sleeve or socket with a divided sleeve or ring clamping around the pipe-ends
    • F16L21/065—Joints with sleeve or socket with a divided sleeve or ring clamping around the pipe-ends tightened by tangentially-arranged threaded pins
    • 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
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
    • F16B39/282—Locking by means of special shape of work-engaging surfaces, e.g. notched or toothed nuts
    • 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
    • F16L21/00—Joints with sleeve or socket
    • F16L21/06—Joints with sleeve or socket with a divided sleeve or ring clamping around the pipe-ends
    • 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
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • 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
    • F16L2201/00—Special arrangements for pipe couplings
    • F16L2201/60—Identification or marking

Definitions

  • the present invention relates to a pipe coupling used to connect two pipes, and more particularly, the assembly work for the connection of two pipes can be made quickly and easily, and the assembly state can be maintained stably and securely. Relates to a pipe coupling.
  • pipe couplings for connecting pipes and pipes are widely used throughout the industry, such as various industrial equipment and plumbing equipment for building structures.
  • FIG. 1 shows an example of a pipe coupling according to the prior art, and as shown, a semicircular space for accommodating opposite ends of pipes 4 and 5 having grooves 3 formed on the outer periphery ( 6) and a pair of semicircular rings each formed at both side edges of the semicircular space 6 and having fixing jaws 8 and 9 which can be fitted into the grooves 3 of the pipes 4 and 5, respectively.
  • An elastic sealing ring 7 made of a coupling segment 1, 2 and an elastic material such as an EPDM elastomer and fitted in a semicircular space 6 for sealing between the ends of the pipes 4, 5, It consists of fastening means 10 for fastening two semicircular coupling segments 1, 2 together with pipes 4, 5.
  • the conventional pipe coupling is elastically positioned in the semicircular space 6 of the semicircular coupling segments 1, 2 and positioned at the outer periphery of the ends of the two pipes 4, 5 by tightening the fixing means 10.
  • the sealing ring 7 is compressed to seal between the ends of the pipes 4 and 5, and at the same time, the fixing jaw 8 is fitted into the groove 3 of the two pipes 4 and 5 so that the two pipes ( 4, 5).
  • Patent Literature 1 forms a cut portion integrally with the flange portions facing each other when the semi-circular coupling segments (first and second members) are coupled to each other, and inserts an identification sheet therebetween to tighten the bolts and nuts.
  • the cutting unit cuts out the identification sheet so that the semicircular coupling segments are firmly fastened with the bolts and nuts completely tightened.
  • Patent Document 1 KR 10-1810063 B1 (Dec. 12, 2017)
  • Patent Document 2 KR 20-0391294 Y1 (2005.07.21)
  • Patent Document 3 KR 10-0536822 B1 (2005.12.08)
  • Patent Document 4 KR 10-1234108 B1 (2012.02.12)
  • Patent Document 5 KR 10-1284635 B1 (2013.07.04)
  • Patent Document 6 KR 10-0193346 B1 (1999.02.03)
  • Patent Document 7 JP P2009-222107 A (2009.10.1)
  • the present inventors devised in view of solving the limitations and problems of the existing pipe coupling while comprehensively considering the above-described matters, and the assembling work for the connection of the two pipes can be made quickly and easily, and also in the assembled state.
  • the technical problem and object to be solved by the present invention is to provide a pipe coupling that allows the assembly work for the connection of the two pipes can be made quickly and easily.
  • Another technical problem and object to be solved by the present invention is to provide a pipe coupling that can be maintained firmly assembled.
  • Another technical problem and object to be solved by the present invention is to provide a pipe coupling that can more easily break the member for accurately confirming the complete assembly state.
  • Specific means according to an embodiment of the present invention for achieving the object as described above and to solve the technical problem is formed in a semi-circular shape so as to surround a part of the connection portion of the two pipes, an annular sealing member in the inner circumference
  • a support groove is formed to support the body, and a body having a tenon fitted into grooves formed at outer periphery of the two pipes facing each other on both side edges of the support groove is formed, and integrally at both end edges of the body.
  • a first member including a flange having a through hole and a bolt hole penetrating up and down therein, and having a seating groove formed around the through hole, and a cutting blade integrally formed at an edge of the flange.
  • a second member formed in the same shape and disposed point-symmetrically under the first member to be coupled to the first member when the bolt and the nut are fastened; And a threaded portion of the bolt inserted between the flanges facing each other of the first member and the second member, the threaded portion of the bolt being inserted into the through hole and the bolt hole of the first and second members, and the nut being tightened.
  • the second member is coupled to provide a pipe coupling, characterized in that it comprises an identification member that includes a part that protrudes out of the flange by the cutting blade.
  • the present invention does not need to tighten the bolt and nut in a state in which the identification member is in close contact with the flange can be quickly and easily assembled for the connection of the two pipes.
  • the identification member includes a locking portion which is partially fitted into the seating groove of the flange by a press-fit method, and an inserting portion which is integrally formed to protrude on one surface of the locking portion and fitted into the through-hole by a press-fit method.
  • the identification member has a plurality of contact protrusions formed at regular intervals on the outer circumference of the insertion portion, and is hollowed to guide the threaded portion of the bolt into the bolt hole to facilitate insertion of the bolt portion into the hole.
  • the guide portion may protrude integrally with the outer end of the insertion portion.
  • irregularities are formed on opposite surfaces around the bolt hole of the nut and the flange, respectively, so that the nut can be prevented from loosening or loosening due to external force, thereby further tightening and assembling. It can keep more firm.
  • the identification member cuts the two cutting blades cross each other, and each of the cutting blades formed on one flange of both sides of the body and the cutting blades formed on the other flange alternately cross each other.
  • the cutting blade is formed in a corresponding shape or each cutting blade is formed by dividing each pair into a pair of corresponding shapes, so that the identification member can be broken more easily and easily, so that the bolts and nuts are completely tightened. Can be.
  • a stopper and a stopper hole are formed to correspond to each other on the flange faces of the first member and the second member facing each other, thereby preventing the first member and the second member from being misaligned.
  • the wedge for pressing and holding the sealing member is integrally formed on the inner wall of the support groove so that the sealing member can be more effectively compressed when the bolt and the nut are tightened.
  • Embodiments of the present invention which have a means and a configuration for achieving the above object and the technical problem, the first member is inserted into the flange of the second member in a force-fitting manner to maintain the engagement state of the first member Unlike the conventional method, it is not necessary for the operator to work with the identification member attached to the flange with one hand in the process of inserting the bolt and tightening the nut, so that the assembly work for connecting the two pipes can be performed quickly, easily and efficiently. Can be.
  • the cutting blades formed on one flange of both sides of the body and the cutting blades formed on the other flange intersect with each other, the cutting blades are divided into a pair of corresponding shapes so that the first member and the second The two blades intersect when the member is fully engaged, and the identification member can be easily broken to accurately identify the state where the bolt and nut are fully tightened.
  • FIG. 1 is an exemplary view showing a pipe coupling according to the prior art.
  • FIG. 2 is an exploded perspective view illustrating a pipe coupling according to an embodiment of the present invention.
  • Figure 3 is a cross-sectional view showing a coupling state of the pipe coupling according to an embodiment of the present invention.
  • FIG. 4 is a perspective view showing an identification member of the components constituting the pipe coupling according to an embodiment of the present invention.
  • FIG. 5 is a perspective view showing another form of the identification member of the components constituting the pipe coupling according to an embodiment of the present invention.
  • FIG. 6 is a perspective view showing another form of the identification member of the components constituting the pipe coupling according to an embodiment of the present invention.
  • FIG. 7 is an enlarged cross-sectional view of a local portion of a pipe coupling according to another embodiment of the present invention.
  • FIG. 8 is an exploded perspective view illustrating first and second members of a pipe coupling component according to another embodiment of the present invention.
  • FIG. 9 is a partially enlarged cross-sectional view illustrating a coupling state between first and second members of a pipe coupling component according to another embodiment of the present invention.
  • first member 12 second member
  • the term and / or as used herein means a combination of a plurality of related items or any item of a plurality of related items, and when a part includes a certain component, this is a particularly opposite description. Unless otherwise indicated, it does not exclude other components, which means that other components may be further included.
  • unit and “unit” mean a module form that serves as a unit or a role for processing at least one function or a certain operation desired in a system, which is hardware or software or a combination of hardware and software. It can be implemented as a device or an assembly capable of performing independent operations or the like through means.
  • top, bottom, top, bottom, or top, bottom, top, bottom, and the like are used for convenience of differentiating relative positions of each component.
  • the upper part of the figure may be named and referred to as the lower part of the lower part.
  • first and second may be used to describe various components. That is, terms such as first and second may be used only to distinguish one component from another component.
  • first component may be referred to as the second component without departing from the scope of the present invention, and the second component may also be referred to as the first component.
  • the main configuration of the pipe coupling according to the embodiment of the present invention includes a first member 11, a second member 12, and an identification member 30. .
  • the first and second members 11 and 12 are fastened to the bolt 50 and the nut 60 in a state where they are point-symmetrically disposed between the abutting portions of the two pipes or the end portions adjacent to each other, that is, the connecting portion. It is formed in the same shape with each other so that they can be coupled to each other by the bonding force and the pressing force generated during.
  • first and second members 11 and 12 are formed of a metal material to wrap and fix the outer circumferences of the connecting portions of the two pipes in a male and female coupling manner.
  • Each of the first and second members 11 and 12 includes a body 13, a flange 16, and a cutting blade 20.
  • the body 13 is formed in a semi-circular shape so as to surround a part of the connection part of the two pipes, and an inner annular sealing member interposed inside the inner circumference to seal the connection parts of the two pipes without gaps and prevent leakage of the fluid (
  • Support grooves 14 are formed to support 40, and both sides of the inner periphery, i.e., both side edges of the support grooves 14, are inserted into grooves respectively formed at the outer periphery of the end portions of the two pipes facing each other. (15) is formed.
  • the flange 16 is integrally formed as a lug on both edges of the body 13, and a through hole 17 and a bolt hole 18 are formed in the inside thereof.
  • the through hole 17 is formed to couple a part of the identification member 30 by a press-fit method, and the bolt hole 18 has the first member 11 and the second member 12 of the two pipes. It is formed so that it can be fastened with the bolt 50 and the nut 60 in the state which wraps the part which abuts together.
  • the seating for coupling the identification member 30 around the through hole 17 on the surface of the flanges 16 facing each other The groove 19 is formed.
  • the bolt hole 18 is a slot hole to facilitate the fastening of the nut 60 while conveniently fitting the screw portion of the bolt 50 at the time of coupling the first member 11 and the second member 12. It is preferable that it is formed in a shape.
  • the through hole 17 is preferably formed to be slightly larger than the inner diameter of the bolt hole 18.
  • the cutting blade 20 has a predetermined range when the bolt 50 and the nut 60 are fastened together with the first member 11 and the second member 12 wrapped together with the two pipes in contact with each other. When it is within, it is integrally formed at the edge of the flange 16 to cut the break 34 of the identification member 30.
  • the cutting blade 20 cuts the break 34 of the identification member 30 while crossing each other with the cutting blade 20. Towards its end, the width becomes narrower or sharper.
  • the identification member 30 is formed to be sandwiched between the flanges 16 of the first member 11 and the second member 12 facing each other, and the first and second members 11 and 12 Cutting blade 20 when inserting the threaded portion of the bolt 50 into the through hole 17 and the bolt hole 18 and tightening the nut 60 to join the first member 11 and the second member 12.
  • the portion which protrudes out of the flange 16 by this is formed so that it may be broken.
  • the identification member 30 has a locking portion 31 in which a part is fitted in a seating groove 19 of the flange by a press-fit method, and one side of the locking portion 31 is elastically deformed by elasticity and penetrates therethrough.
  • the insertion part 32 fitted in the hole 17 in a press-fitting manner is integrally formed to protrude, so that the bolt 50 can be inserted, that is, the through hole of the first and second members 11 and 12. 17 and the long hole 33 which penetrates the locking part 31 and the insertion part 32 up and down so that the screw part of the bolt 50 may be inserted into the bolt hole 18, and the locking part 31 is formed.
  • the other side of the protruding portion 34 is formed integrally broken by the cutting blade (20).
  • a slit 35 is formed at the center portion of the break 34 so that the cutting blades 20 can be easily broken while being cut, and the thickness is relatively thinner than the catching portion 31. have.
  • the identification member 30 is a nylon resin, polyester resin, plastic (PE, PP, PVC, PS, ABS, AS, MA, PVAL, PET) resin having a slight elasticity so that elastic deformation occurs when subjected to external force Injection molding can be carried out with synthetic resins such as these.
  • the identification member 30 may check the state in which the bolt 50 and the nut 60 are completely tightened more accurately and effectively by different colors from the first member 11 and the second member 12.
  • the first member 11 and the second member 12 are pulled toward each other as the bolt 50 and the nut 60 are tightened to close each other.
  • Pressure is naturally applied to the sealing member 40, which causes the sealing member 40 to deform to prevent a gap between the two pipes.
  • the identification member 30 is fitted to the flange 16 of the second member (or the first member) in a force-fitting manner and maintains its engagement state, the bolt 50 is inserted after facing the first member 11.
  • the operator does not need to work with the identification member 30 in close contact with the flange 16 with one hand, so the assembly work for connecting the two pipes is quick, easy and efficient. Can be made.
  • a part of the engaging portion 31 of the identification member 30 is fitted into the seating groove 19 of the flange 16 in a press-fitting manner, and at the same time the insertion portion 32 is elastically deformed by elasticity and the through hole ( Since it is fitted in the press-fit method 17, it is possible to stably maintain the state coupled to the first member 11 or the second member 12 before the bolt 50 is inserted and the nut 60 is tightened.
  • the coupling force of the identification member 30 the flow of the first member 11 and the second member 12 is minimized, and the sealing member 40 is pressurized more uniformly so that a higher pressure can be obtained without leakage of the fluid. Can withstand
  • the outer periphery of the insertion portion 32 of the identification member (30-1) is a close contact protrusion to maintain a more flexible, elastic and stable fit in the through hole 17 of the flange ( 36 may be formed at regular intervals.
  • the free end of the insertion portion 32 of the identification member 30-2 is inserted into the bolt hole 18 to insert the screw portion of the bolt 50 into the long hole 33.
  • Hollow guide portion 37 for guiding easily may be integrally formed to protrude.
  • the guide part 37 is fitted as the length of the insertion part 32 extends to the inner periphery of the bolt hole 18, and since the hollow communicates with the long hole 33, the threaded part of the bolt 50 is the bolt hole ( 18) If the long hole 33 of the insertion portion 32 is not exactly in line with the bolt hole 18 when it is inserted into it, contact interference with the free end of the insertion portion 32 is not convenient and does not enter easily. Can be solved.
  • each of the cutting blades 20 is bisected into a pair of the corresponding shape, respectively Can be formed.
  • the cutting blade 20 can more easily and easily break the break 34 of the identification member 30 by the action of the two blades intersecting each other, so that the bolt 50 and the nut 60 are completely The tightness can be checked accurately.
  • the cutting blades 20 may be formed in one shape corresponding to each other so that the cutting blades 20 alternately cross each other as shown in FIG. 9.
  • the flange 16 is illustrated as being symmetrically formed at both end edges of the body 13, but is not limited thereto and is formed only at one end edge of the body 13, and the other end (opposite end) is formed.
  • the knuckle may be formed at the partial edge so as to be connected to the other body 13 by hinged joints.

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

Abstract

La présente invention a pour objectif de fournir un raccord de tuyau grâce auquel une opération d'assemblage pour le raccordement de deux tuyaux peut être effectuée rapidement et facilement. À cet effet, la présente invention concerne un raccord de tuyau comprenant : un premier élément doté d'un corps formé dans une forme semi-annulaire de manière à entourer une portion d'une partie de raccordement de chacun des deux tuyaux et étant également doté d'une rainure de support formée à l'intérieur de sa circonférence interne de manière à soutenir un élément d'étanchéité annulaire, des brides qui sont formées d'un seul tenant au niveau des bords d'une portion d'extrémité du corps et ont des orifices traversants s'étendant verticalement en leur sein et des rainures d'appui formées autour des orifices traversants et des lames de coupe formées d'un seul tenant avec les bords des brides; un second élément qui est formé pour avoir la même forme que le premier élément est disposé de manière symétrique au-dessous du premier élément et est couplé au premier élément lorsque des boulons et des écrous sont fixés; et des éléments d'identification qui sont insérés entre les brides se faisant face mutuellement du premier élément et du second élément et dont une portion faisant saillie vers l'extérieur à partir des brides est coupée par les lames de coupe lorsque le premier élément et le second élément sont couplés par insertion des boulons dans les orifices traversants des premier et second éléments puis par serrage des écrous.
PCT/KR2018/015158 2018-08-30 2018-12-03 Raccord de tuyau permettant de vérifier l'état de fixation WO2020045749A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020180103090A KR102100634B1 (ko) 2018-08-30 2018-08-30 체결 상태를 체크할 수 있는 파이프 커플링
KR10-2018-0103090 2018-08-30

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WO2020045749A1 true WO2020045749A1 (fr) 2020-03-05

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PCT/KR2018/015158 WO2020045749A1 (fr) 2018-08-30 2018-12-03 Raccord de tuyau permettant de vérifier l'état de fixation

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KR (1) KR102100634B1 (fr)
WO (1) WO2020045749A1 (fr)

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CN112145836A (zh) * 2020-09-17 2020-12-29 席赫 一种石油开采用油管连接固定装置
CN112628493A (zh) * 2020-12-01 2021-04-09 广东珠江燃气集团股份有限公司 一种燃气管道工程用防泄漏连接封边装置
US20220307633A1 (en) * 2021-02-07 2022-09-29 Shanghai Vision Mechanical Joint Co., Ltd Quick coupler
KR20220148067A (ko) * 2021-04-28 2022-11-04 김수현 교반기 허브

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KR102604808B1 (ko) * 2022-04-05 2023-11-20 유기성 표식체를 갖는 파이프 커플러
KR102689895B1 (ko) * 2022-05-31 2024-07-30 주식회사 동우스페이스 은닉형 식별수단을 갖는 소방 배관용 커플러
KR102671287B1 (ko) * 2022-05-31 2024-05-31 주식회사 동우스페이스 폴딩형 식별수단을 갖는 소방 배관용 커플러
KR102449888B1 (ko) * 2022-06-10 2022-09-29 김남수 식별형 커플러를 이용한 관체 이음형 보일러
KR102599681B1 (ko) * 2022-09-28 2023-11-07 (주)앤디스티앤지 배관 연결용 조인트
KR102705457B1 (ko) * 2022-10-27 2024-09-11 (주)보현산업 출몰형 식별수단을 갖는 소방 배관용 커플러
KR102634929B1 (ko) * 2022-11-16 2024-02-07 (주)앤디스티앤지 배관 연결용 조인트

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KR20040081407A (ko) * 2004-09-01 2004-09-21 주식회사 비엠티 너트풀림 방지구와 너트풀림 방지구가 구비된 클램프
US20170074433A1 (en) * 2012-01-20 2017-03-16 Mueller International, Llc Coupling gasket with multiple sealing surfaces
KR101810063B1 (ko) * 2016-02-01 2017-12-18 주식회사 코리아조인트 파이프 커플링

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CN112145836A (zh) * 2020-09-17 2020-12-29 席赫 一种石油开采用油管连接固定装置
CN112145836B (zh) * 2020-09-17 2021-07-13 席赫 一种石油开采用油管连接固定装置
CN112628493A (zh) * 2020-12-01 2021-04-09 广东珠江燃气集团股份有限公司 一种燃气管道工程用防泄漏连接封边装置
CN112628493B (zh) * 2020-12-01 2022-08-19 广东珠江燃气集团股份有限公司 一种燃气管道工程用防泄漏连接封边装置
US20220307633A1 (en) * 2021-02-07 2022-09-29 Shanghai Vision Mechanical Joint Co., Ltd Quick coupler
KR20220148067A (ko) * 2021-04-28 2022-11-04 김수현 교반기 허브
KR102635667B1 (ko) * 2021-04-28 2024-02-14 김수현 교반기 허브

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