KR20220118603A - Fitting lockring - Google Patents

Fitting lockring Download PDF

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Publication number
KR20220118603A
KR20220118603A KR1020210022210A KR20210022210A KR20220118603A KR 20220118603 A KR20220118603 A KR 20220118603A KR 1020210022210 A KR1020210022210 A KR 1020210022210A KR 20210022210 A KR20210022210 A KR 20210022210A KR 20220118603 A KR20220118603 A KR 20220118603A
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KR
South Korea
Prior art keywords
inner diameter
diameter portion
lock ring
tapered
fitting lock
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KR1020210022210A
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Korean (ko)
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KR102467645B1 (en
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김가을
강재윤
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김가을
강재윤
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Priority to KR1020210022210A priority Critical patent/KR102467645B1/en
Publication of KR20220118603A publication Critical patent/KR20220118603A/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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/06—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends
    • F16L19/065—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends the wedging action being effected by means of a ring
    • 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
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/08—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts with metal rings which bite into the wall of the pipe
    • F16L19/10—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts with metal rings which bite into the wall of the pipe the profile of the ring being altered
    • F16L19/106—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts with metal rings which bite into the wall of the pipe the profile of the ring being altered the ring comprising a shoulder against which the pipe end abuts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/26—Refrigerant piping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/40—Fluid line arrangements
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S138/00—Pipes and tubular conduits

Abstract

An objective of the present invention is to provide a fitting lock ring capable of easily connecting pipes to be connected with a small load and preventing leakage during final connection. The present invention relates to a fitting lock ring having an inlet end and an outlet end. The fitting lock ring comprises: a tapered inner diameter unit in which the inner diameter gradually decreases from the inlet end; a uniform inner diameter unit extending from the tapered inner diameter unit; a locking unit protruding inward in a ring shape between the uniform inner diameter unit and the outlet end; and a rounding unit gently connecting the tapered inner diameter unit and the uniform inner diameter unit.

Description

피팅 락링{FITTING LOCKRING}FITTING LOCKRING {FITTING LOCKRING}

본 발명은 피팅 락링에 관한 것이다.The present invention relates to a fitting lock ring.

냉매에 대한 유로를 형성하는 배관은 그 연결이음부가 밀봉되어야 하며, 배관의 밀봉 연결을 위해 피팅 락링이 사용되고 있다.In the pipe forming the flow path for the refrigerant, the connection joint must be sealed, and a fitting lock ring is used for sealing connection of the pipe.

종래의 피팅 락링은 내경부 일단에서 타단까지 내경이 점진적으로 감소되도록 진입부, 조임부, 압축부순으로 이루어져 있다.A conventional fitting lock ring consists of an entry part, a tightening part, and a compression part so that the internal diameter is gradually reduced from one end of the internal diameter part to the other end.

그러나, 종래의 피팅 락링은 진입부를 통과한 배관이 조임부로 진입될 때 부하량이 매우 커져 배관이 용이하게 진입되지 않았으며, 조임부로 배관이 진입이 되더라도 배관의 직경이 너무 과도하게 감소되어 피팅 락링과 배관 사이에 공간이 발생된다. 이에 따라 누수의 문제가 발생되는 문제점이 있다.However, in the conventional fitting lock ring, when the pipe passing through the entry part enters the tightening part, the load is very large, so the pipe is not easily entered. A space is created between the lock ring and the pipe. Accordingly, there is a problem in that a problem of leakage occurs.

따라서, 본 발명의 목적은 연결하고자 하는 배관을 적은 부하량으로 손쉽게 연결하고, 최종 연결시 누수가 발생되는 것을 방지할 수 있는 피팅 락링을 제공하는 것을 목적으로 한다.Accordingly, it is an object of the present invention to provide a fitting lock ring capable of easily connecting a pipe to be connected with a small load amount and preventing leakage during final connection.

본 발명은 입구단과 출구단을 갖는 관상의 피팅 락링에 있어서, 상기 입구단으로부터 점진적으로 내경이 감소되는 테이퍼내경부와, 상기 테이퍼내경부로부터 연장된 균등내경부와, 상기 균등내경부와 상기 출구단 사이에 고리상으로 내향 돌출된 락킹부 및, 상기 테이퍼내경부와 상기 균등내경부를 완만하게 연결하는 라운딩부를 포함한다.The present invention provides a tubular fitting lock ring having an inlet end and an outlet end. It includes a locking portion protruding inwardly in an annular shape between the ends, and a rounding portion gently connecting the tapered inner diameter portion and the equal inner diameter portion.

여기서, 상기 입구단으로부터 소정 구간 외경이 점진적으로 증가하는 테이퍼외경부와 상기 테이퍼외경부로부터 연장되는 균등외경부를 갖는 것이 바람직하다.Here, it is preferable to have a tapered outer diameter portion in which an outer diameter of a predetermined section gradually increases from the inlet end and an equal outer diameter portion extending from the tapered outer diameter portion.

상기 테이퍼외경부의 길이는 상기 테이퍼내경부의 길이의 40 ~ 50% 범위인 것이 바람직하다.The length of the tapered outer diameter portion is preferably in the range of 40 to 50% of the length of the tapered inner diameter portion.

상기 균등내경부의 길이는 전체 길이의 1 ~ 2% 범위인 것이 바람직하다.The length of the equal inner diameter portion is preferably in the range of 1 to 2% of the total length.

상기 락킹부는 상기 균등내경부로부터 상기 출구단을 향해 다단으로 돌출되는 것이 바람직하다.Preferably, the locking portion protrudes from the equal inner diameter portion toward the exit end in multiple stages.

전술한 구성을 갖는 본 발명에 따르면, 연결하고자 하는 배관을 적은 부하량으로 손쉽게 연결하고, 최종 연결시 누수가 발생되는 것을 방지할 수 있다.According to the present invention having the above-described configuration, it is possible to easily connect the pipe to be connected with a small load amount and prevent leakage of water during the final connection.

도 1은 본 발명의 실시예에 따른 피팅 락링의 단면도이다.
도 2는 본 발명의 다른 실시예에 따른 피팅 락링의 단면도이다.1 is a cross-sectional view of a fitting lock ring according to an embodiment of the present invention.
2 is a cross-sectional view of a fitting lock ring according to another embodiment of the present invention.

이하, 첨부도면을 참조하여 본 발명의 실시예에 따른 피팅 락링을 구체적으로 설명한다.Hereinafter, a fitting lock ring according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

도 1을 참조하면, 실시예에 따른 피팅 락링(100)은 입구단(102)과 출구단(104)을 갖는 관상으로 이루어져 두 개의 배관을 연결할 때 사용된다. 피팅 락링(100)은 테이퍼내경부(110), 균등내경부(120), 락킹부(130), 라운딩부(140)를 가진다.Referring to FIG. 1 , the fitting lock ring 100 according to the embodiment has a tubular shape having an inlet end 102 and an outlet end 104 and is used to connect two pipes. The fitting lock ring 100 has a tapered inner diameter portion 110 , an equal inner diameter portion 120 , a locking portion 130 , and a rounding portion 140 .

입구단(102)은 배관이 진입하는 초기구간으로써 입구단(102)의 직경은 배관의 직경보다 크게 형성되어야 한다. 구체적으로 입구단(102)의 직경은 배관의 직경 대비 105% 내지 130% 범위의 직경을 가지는 것이 바람직하다.The inlet end 102 is an initial section through which the pipe enters, and the diameter of the inlet end 102 should be formed larger than the diameter of the pipe. Specifically, the diameter of the inlet end 102 preferably has a diameter in the range of 105% to 130% of the diameter of the pipe.

입구단(102)의 직경이 배관의 직경 대비 105% 이하이면, 입구단(102)을 통해 배관이 진입될 때 부하량이 증가하여 배관이 진입되지 않게 된다. 또한, 배관을 입구단(102)에 강제로 진입시키면 피팅 락링(100) 또는 배관이 파손되어 체결이 되지 않거나 배관이 체결되더라도 누수(leak)가 발생된다.If the diameter of the inlet end 102 is less than or equal to 105% of the diameter of the pipe, when the pipe enters through the inlet end 102, the load increases and the pipe does not enter. In addition, when the pipe is forcibly entered into the inlet end 102 , the fitting lock ring 100 or the pipe is damaged, so that it is not fastened or a leak occurs even when the pipe is fastened.

입구단(102)의 직경이 배관의 직경 대비 130% 이상이면, 입구단(102)을 통해 배관이 진입될 때의 부하량은 감소하게 되나, 배관이 입구단(102)을 통과하여 테이퍼내경부(110)로 진입시 부하량이 급격히 증가하여 더 이상 진입이 되지 않게 된다. 배관을 강제로 진입시키게 되면 피팅 락링(100) 또는 배관이 파손되어 체결이 되지 않거나 배관이 체결되더라도 누수(leak)가 발생된다.If the diameter of the inlet end 102 is 130% or more of the diameter of the pipe, the load amount when the pipe enters through the inlet end 102 is reduced, but the pipe passes through the inlet end 102 and has a tapered inner diameter ( 110), the load increases sharply, and it is no longer possible to enter. If the pipe is forcibly entered, the fitting lock ring 100 or the pipe is damaged, so that the fastening is not possible, or even if the pipe is fastened, a leak occurs.

그리고, 피팅 락링(100)은 입구단(102)으로부터 소정 구간 외경이 점진적으로 증가하는 테이퍼외경부(106)와 테이퍼외경부(106)로부터 연장되는 균등외경부(108)를 갖는다.In addition, the fitting lock ring 100 has a tapered outer diameter portion 106 in which an outer diameter of a predetermined section gradually increases from the inlet end 102 and an equal outer diameter portion 108 extending from the tapered outer diameter portion 106 .

테이퍼외경부(106)의 길이는 테이퍼내경부(110)의 길이의 40 ~ 50% 범위인 것이 바람직하다.The length of the tapered outer diameter portion 106 is preferably in the range of 40 to 50% of the length of the tapered inner diameter portion 110 .

테이퍼외경부(106)의 길이가 테이퍼내경부(110)의 길이의 40% 이하이면, 테이퍼내경부(110)와 테이퍼외경부(106) 간의 두께가 입구단(102)으로부터 점진적으로 증가되어 배관이 입구단(102)을 통과하여 테이퍼내경부(110)로 진입시 부하량이 급격하게 증가하여 진입이 되지 않게 된다.If the length of the tapered outer diameter portion 106 is 40% or less of the length of the tapered inner diameter portion 110, the thickness between the tapered inner diameter portion 110 and the tapered outer diameter portion 106 is gradually increased from the inlet end 102 to the pipe When entering the tapered inner diameter portion 110 through the inlet end 102, the load is rapidly increased and the entry is not performed.

테이퍼외경부(106)의 길이가 테이퍼내경부(110)의 길이의 50% 이상이면, 테이퍼내경부(110)와 테이퍼외경부(106) 간의 두께가 입구단(102)으로부터 점진적으로 감소되어 배관이 입구단(102)을 통과하여 테이퍼내경부(110)로 진입시 부하량은 감소되나 테이퍼내경부(110)를 통과하는 배관의 직경이 원하는 양 만큼 감소되지 않게 된다.If the length of the tapered outer diameter portion 106 is 50% or more of the length of the tapered inner diameter portion 110, the thickness between the tapered inner diameter portion 110 and the tapered outer diameter portion 106 is gradually reduced from the inlet end 102 to the pipe When entering the tapered inner diameter portion 110 through the inlet end 102, the load is reduced, but the diameter of the pipe passing through the tapered inner diameter portion 110 is not reduced by a desired amount.

테이퍼내경부(110)는 입구단(102)으로부터 점진적으로 내경이 감소되게 형성된다. 테이퍼내경부(110)는 입구단(102)을 통과한 배관이 정확하게 피팅 락링(100)의 중심에 위치되도록 안내하면서 배관의 직경이 감소되게 한다.The tapered inner diameter portion 110 is formed such that the inner diameter is gradually reduced from the inlet end (102). The tapered inner diameter portion 110 reduces the diameter of the pipe while guiding the pipe passing through the inlet end 102 to be accurately positioned at the center of the fitting lock ring 100 .

테이퍼내경부(110)는 피팅 락링(100)의 중심 축선에 대해 80˚ 내지 89˚범위의 각도를 갖는 것이 바람직하다.The tapered inner diameter portion 110 preferably has an angle in the range of 80° to 89° with respect to the central axis of the fitting lock ring 100 .

피팅 락링(100)의 중심 축선에 대한 테이퍼내경부(110)의 각도가 80˚이하이면 테이퍼내경부(110)로 배관이 진입할 때 부하량이 증가하여 진입이 되지 않게 된다.If the angle of the tapered inner diameter portion 110 with respect to the central axis of the fitting lock ring 100 is 80° or less, when the pipe enters the tapered inner diameter portion 110, the load increases and the entry does not occur.

피팅 락링(100)의 중심 축선에 대한 테이퍼내경부(110)의 각도가 89˚이상이면 테이퍼내경부(110)로 배관이 진입할 때 부하량은 감소하게 되나, 테이퍼내경부(110)를 통과하는 배관의 직경이 원하는 양 만큼 감소되지 않아 최종적으로 체결이 되어도 누수(leak)가 발생된다. If the angle of the tapered inner diameter portion 110 with respect to the central axis of the fitting lock ring 100 is 89˚ or more, the load is reduced when the pipe enters the tapered inner diameter portion 110, but passing through the tapered inner diameter portion 110 Since the diameter of the pipe is not reduced by the desired amount, a leak occurs even when the pipe is finally fastened.

균등내경부(120)는 테이퍼내경부(110)로부터 연장되며 테이퍼내경부(110)와 균등내경부(120) 사이에 형성된 라운딩부(140)를 통과하면서 배관에 가해졌던 스트레스가 제거되게 한다.The uniform inner diameter portion 120 extends from the tapered inner diameter portion 110 and the stress applied to the pipe while passing through the rounding portion 140 formed between the tapered inner diameter portion 110 and the equal inner diameter portion 120 is removed.

균등내경부(120)의 길이는 피팅 락링(100)의 전체 길이의 1% 내지 2% 범위가 가장 바람직하다.The length of the uniform inner diameter portion 120 is most preferably in the range of 1% to 2% of the total length of the fitting lock ring 100 .

균등내경부(120)의 길이가 전체 길이의 1% 이하이면 라운딩부(140)를 통과하면서 배관에 가해졌던 스트레스가 제거되지 못해 락킹부(130)에 의해 배관이 가압될 때 균열이 발생된다. If the length of the uniform inner diameter part 120 is less than 1% of the total length, the stress applied to the pipe while passing through the rounding part 140 cannot be removed, so that when the pipe is pressed by the locking part 130, a crack is generated.

균등내경부(120)의 길이가 전체 길이의 2% 이상이면 라운딩부(140)를 통과하면서 배관에 가해졌던 스트레스가 제거는 되지만 피팅 락링(100)의 전체 길이가 불필요하게 늘어나게 된다.When the length of the uniform inner diameter portion 120 is 2% or more of the total length, the stress applied to the pipe while passing through the rounding portion 140 is removed, but the overall length of the fitting lock ring 100 is unnecessarily increased.

락킹부(130)는 균등내경부(120)와 출구단(104) 사이에 고리상으로 내향 돌출되며, 배관과 피팅 락링(100)이 결합되도록 배관을 가압한다.The locking part 130 protrudes inwardly in an annular shape between the equal inner diameter part 120 and the outlet end 104 , and presses the pipe so that the pipe and the fitting lock ring 100 are coupled.

그리고, 도 2를 참조하면 락킹부(1300)는 균등내경부(1200)로부터 출구단(1004)을 향해 다단으로 돌출 형성된다. 락킹부(1300)가 다단으로 돌출됨에 따라 피팅 락링(1000)에 결합되는 배관의 결합력이 더욱더 향상된다.And, referring to FIG. 2, the locking part 1300 is formed to protrude from the equal inner diameter part 1200 toward the exit end 1004 in multiple stages. As the locking part 1300 protrudes in multiple stages, the coupling force of the pipe coupled to the fitting lock ring 1000 is further improved.

라운딩부(140)는 테이퍼내경부(110)와 균등내경부(120)를 완만하게 연결하며, 테이퍼내경부(110)를 통과한 배관의 외경이 초기 배관의 외경에 대해 10% 내지 13% 범위로 감소되게 한다.The rounding part 140 gently connects the tapered inner diameter part 110 and the uniform inner diameter part 120, and the outer diameter of the pipe passing through the tapered inner diameter part 110 is 10% to 13% of the initial pipe outer diameter. to be reduced to

또한, 라운딩부(140)는 테이퍼내경부(110)와 균등내경부(120) 사이가 입구단(102)을 통과한 배관의 직경이 감소될 때 가장 많은 부하량이 발생되는 지점으로 그 부하량을 감소시켜 준다.In addition, the rounding portion 140 reduces the load to the point at which the greatest amount of load occurs when the diameter of the pipe passing through the inlet end 102 between the tapered inner diameter portion 110 and the uniform inner diameter portion 120 is reduced. do it

이상 본 발명의 실시예를 첨부도면을 참조하여 설명하였지만, 당해 기술분야에 숙련된 사람은 하기의 청구범위에 기재된 본 발명의 기술적 사상으로부터 벗어나지 않는 범위 내에서 본 발명을 다양하게 수정 및 변경할 수 있음을 이해할 수 있을 것이다.Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art can variously modify and change the present invention within the scope without departing from the technical spirit of the present invention described in the claims below. will be able to understand

100; 피팅 락링
102; 입구단
104; 출구단
106; 테이퍼외경부
108; 균등외경부
110; 테이퍼내경부
120; 균등내경부
130; 락킹부
140; 라운딩부100; fitting lock ring
102; entrance
104; exit
106; taper outer diameter
108; equal outer diameter
110; Tapered inner diameter
120; uniform inner diameter
130; locking part
140; rounding department

Claims (5)

입구단과 출구단을 갖는 관상의 피팅 락링에 있어서,
상기 입구단으로부터 점진적으로 내경이 감소되는 테이퍼내경부;
상기 테이퍼내경부로부터 연장된 균등내경부;
상기 균등내경부와 상기 출구단 사이에 고리상으로 내향 돌출된 락킹부; 및,
상기 테이퍼내경부와 상기 균등내경부를 완만하게 연결하는 라운딩부;를 포함하는 피팅 락링.
A tubular fitting lock ring having an inlet end and an outlet end, comprising:
a tapered inner diameter part whose inner diameter is gradually reduced from the inlet end;
an equal inner diameter portion extending from the tapered inner diameter portion;
a locking portion protruding inwardly in an annular shape between the equal inner diameter portion and the outlet end; and,
and a rounding part gently connecting the tapered inner diameter part and the equalizing inner diameter part.
 청구항 1에 있어서,
상기 입구단으로부터 소정 구간 외경이 점진적으로 증가하는 테이퍼외경부와 상기 테이퍼외경부로부터 연장되는 균등외경부를 갖는 것을 특징으로 하는 피팅 락링.
The method according to claim 1,
A fitting lock ring, characterized in that it has a tapered outer diameter portion in which an outer diameter of a predetermined section gradually increases from the inlet end and an equal outer diameter portion extending from the tapered outer diameter portion.
 청구항 2에 있어서,
상기 테이퍼외경부의 길이는 상기 테이퍼내경부의 길이의 40 ~ 50% 범위인 것을 특징으로 하는 피팅 락링.
3. The method according to claim 2,
The length of the tapered outer diameter portion is in the range of 40 to 50% of the length of the tapered inner diameter fitting lock ring.
 청구항 1에 있어서,
상기 균등내경부의 길이는 전체 길이의 1 ~ 2% 범위인 것을 특징으로 하는 피팅 락링.
The method according to claim 1,
A fitting lock ring, characterized in that the length of the uniform inner diameter is in the range of 1 to 2% of the total length.
 청구항 1에 있어서,
상기 락킹부는 상기 균등내경부로부터 상기 출구단을 향해 다단으로 돌출되는 것을 특징으로 하는 피팅 락링.The method according to claim 1,
and the locking portion protrudes from the equal inner diameter portion toward the outlet end in multiple stages.
KR1020210022210A 2021-02-19 2021-02-19 Fitting lockring KR102467645B1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008520912A (en) * 2004-11-17 2008-06-19 ヴルカン ロクリング ローアフェアビンドゥンゲン ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフト Pipe joint
CN203202454U (en) * 2013-03-20 2013-09-18 彭坚 Cold extruding combined connector for refrigerating/drinking water system pipeline connection
KR101682703B1 (en) * 2016-04-14 2016-12-05 (주)하나테크 Lock Sleeve

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008520912A (en) * 2004-11-17 2008-06-19 ヴルカン ロクリング ローアフェアビンドゥンゲン ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフト Pipe joint
CN203202454U (en) * 2013-03-20 2013-09-18 彭坚 Cold extruding combined connector for refrigerating/drinking water system pipeline connection
KR101682703B1 (en) * 2016-04-14 2016-12-05 (주)하나테크 Lock Sleeve

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