KR930003264Y1 - Plastic Tube Joint - Google Patents
Plastic Tube Joint Download PDFInfo
- Publication number
- KR930003264Y1 KR930003264Y1 KR2019880014975U KR880014975U KR930003264Y1 KR 930003264 Y1 KR930003264 Y1 KR 930003264Y1 KR 2019880014975 U KR2019880014975 U KR 2019880014975U KR 880014975 U KR880014975 U KR 880014975U KR 930003264 Y1 KR930003264 Y1 KR 930003264Y1
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- South Korea
- Prior art keywords
- tube
- joint
- tip
- nut
- plastic
- Prior art date
- Legal status (The legal status 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 status listed.)
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Classifications
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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
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
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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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints That Cut Off Fluids, And Hose Joints (AREA)
- Joints With Pressure Members (AREA)
Abstract
내용 없음.No content.
Description
제1도는 본 고안의 한 실시예를 도시하는 플라스틱튜브용 조인트의 종단면도.1 is a longitudinal cross-sectional view of a joint for a plastic tube showing an embodiment of the present invention.
제2도는 체결상태의 종단면도.2 is a longitudinal cross-sectional view of the fastening state.
제3도는 종래의 플라스틱튜브용 조인트의 종단면도.3 is a longitudinal sectional view of a conventional joint for plastic tubes.
제4도 및 제5도는 체결상태의 종단면도.4 and 5 are longitudinal cross-sectional views of the fastening state.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 조인트본체 1a : 통부1: Joint body 1a: Tube part
1b : 외부나사 1c : 선단부1b: external thread 1c: tip
1d : 계단부 1e : 오목부1d: stair part 1e: concave part
1f : 모서리부 2 : 너트1f: corner part 2: nut
2a : 내부나사 2b : 원추면2a: Internal thread 2b: Conical surface
3 : 튜브3: tube
[산업상의 이용 분야][Industrial use]
본 고안은 화학용액을 취급하는 플라스틱튜브의 접속에 사용되는 튜브용 조인트의 개량에 관한 것이다.The present invention relates to an improvement of a joint for a tube used for connecting a plastic tube for handling a chemical solution.
[종래의 기술][Prior art]
종래 이런 종류의 플라스틱튜브용 조인트로서는 제3도 내지 제5도에 도시한 것이 알려져 있다.Conventionally, as shown in FIGS. 3 to 5 as a joint for a plastic tube of this kind.
즉, 상기 도면에서 1은 불소수지와 같은 열가가소성수지로 형성된 조인트본체, 2는 동일한 재료로 형성된 너트, 3은 동일한 재료로 만들어진 튜브이며 상기 조인트본체(1)는 튜브(3)를 수용하게 되며 통부(1a)를 가지고 그 외측에 외부나사(1b)가 설치되며 통부(1a)의 선단부(1c)의 외경측에 원추형 테이퍼가 형성되어 있다.That is, in the drawing, 1 is a joint body formed of a thermoplastic resin such as fluorocarbon resin, 2 is a nut formed of the same material, 3 is a tube made of the same material, and the joint body 1 receives the tube 3. The outer thread 1b is provided in the outer side with the cylinder part 1a, and the conical taper is formed in the outer diameter side of the front-end | tip part 1c of the cylinder part 1a.
상기 너트(2)에는 상기 통부(1a)의 외부나사(1b)에 나사 결합하는 내부나사(2a)와 그 내부나사에 접속한 원추면(2b)을 구비하고 있고 통부(1a)내에 튜브(3)를 그 선단이 통부(1a)내의 계단부(1d)에 접하는 곳까지 삽입하고 너트(2)를 튜브(3)에 따라 미끄러지게 해서 내부나사(2a)를 조인트본체측의 통부(1a)의 외부나사(1b)에 나사결합시켜 회전시키면 너트(2)의 원추면(2b)은 통부(1a)의 선단에 접하고 그 원추면(2b)의 안내작에 의해 통부(1a)의 선단부(1c)는 제4도에 도시한 바와 같이 튜브에 대향하여 변형 압착되므로 그 부분에 밀봉이 이루어지고 또 튜브(3)의 선단이 본체(1)의 측의 계단부(1d)를 압착하므로 그 부분에도 밀봉이 이루어지며 동시에 튜브(3)는 조인트본체에 확실히 지지되도록 되어 있다.The nut 2 has an internal screw 2a which is screwed to the external screw 1b of the cylinder 1a and a conical surface 2b connected to the internal screw, and the tube 3 in the cylinder 1a. To the place where the tip is in contact with the step 1d in the tube 1a, and the nut 2 is slid along the tube 3 so that the internal screw 2a is external to the tube 1a on the joint body side. When the screw 1b is screwed and rotated, the conical surface 2b of the nut 2 is in contact with the tip of the tube 1a, and the tip 1c of the tube 1a is the fourth by the guide operation of the conical surface 2b. As shown in the figure, the deformation is crimped against the tube so that the sealing is made on the part, and the tip of the tube 3 presses the stepped portion 1d on the side of the main body 1, thereby sealing the part. At the same time, the tube 3 is securely supported by the joint body.
[고안이 해결하려는 문제점][Problem trying to solve]
그러나, 상기 플라스틱튜브용 조인트의 구성에는 상기 밀봉부분에 무리가 있고 또 플라스틱이 크리이프에 대한 고려가 불충분한 것이므로 유체압이 높을 때나 온도가 높을 때에 누설이 생기며 튜브가 화살표의 방향으로 뽑아져버리는 일이 빈발하고 열사이클이 첨가된 조건에서는 현저한 밀봉성능의 저하를 일으켜 쉽사리 누설되게 하는 등 사용조건에 많은 제약을 갖는 결점이 있다.However, in the construction of the joint for the plastic tube, the sealing portion is excessive and the plastic is insufficient in consideration of creep, so that leakage occurs when the fluid pressure is high or the temperature is high, and the tube is pulled in the direction of the arrow. In such frequent and thermal cycle-added conditions, there is a drawback that there are many restrictions on the use conditions, such as a significant drop in the sealing performance and easy leakage.
상기 튜브조인트의 구조상의 문제를 구체적으로 지적하면 이하와 같이 되어 있다.The structural problem of the said tube joint is pointed out concretely as follows.
(1), 조인트본체(1)의 통부(1a)의 선단부의 외주측이 원추형 테이퍼로서 선단두께가 얇아져 열이 부가된 경우 제5도에 도시한 바와 같이 선단부가 늘어나서 너트와 튜브의 극간으로 빠져나가 밀봉부분에 이완이 생겨 열사이클 등에 의해 용이하게 누설이 생긴다.(1) When the outer circumferential side of the tip portion of the tubular portion 1a of the joint body 1 is a conical taper and the tip thickness becomes thin and heat is added, as shown in FIG. 5, the tip portion extends and falls into the gap between the nut and the tube. Relaxation occurs in the sealing portion, and leakage occurs easily due to a heat cycle or the like.
(2), 또, 제4도에 도시한 바와 같이 튜브의 압축 변형량이 적고, 튜브가 빠지는 방향에 대하여 튜브의 빠짐을 저지하도록 작용하는 조인트본체의 선단부의 각도가 완만하게 이루어지므로 고온이나 고압에 있어서 누설이 생기거나 튜브가 조인트본체로부터 빠져버린다.(2) In addition, as shown in FIG. 4, the amount of compression deformation of the tube is small, and the angle of the tip of the joint body which acts to prevent the tube from coming off with respect to the direction in which the tube is pulled out is made gentle. Leakage occurs or the tube is pulled out of the joint body.
본 고안은 상기 결점을 제거하기 위하여 이루어진 것으로서, 전술한 구성의 튜브용 조인트에 있어서 통부의 선단부의 크리이프에 의해 빠져나감에 따른 유체누설을 확실히 방지하고 또 튜브의 빠짐방지작용을 강화하는 플라스틱튜브용 조인트를 제공하는 것을 주목적으로 하는 것이다.The present invention is made to eliminate the above-mentioned defects, in the tube joint of the above-described configuration for the plastic tube to reliably prevent the fluid leakage due to the escape by the creep of the tip of the tube portion and to strengthen the tube fall prevention action The main purpose is to provide a joint.
또한, 본 출원인은 본 고안에 앞서 실용공개 소 61-186888호 공보에 고온고압에서 사용할 수 있는 플라스틱튜브용 조인트를 개시하고 있지만 이것은 슬리이브를 사용하므로 조인트의 직경이 그만큼 커지고 반도체용기 등에 사용될 때에 취급이나 공간상 문제가 있다.In addition, the present applicant discloses a joint for a plastic tube that can be used at high temperature and high pressure in the practical publication No. 61-186888 prior to the present invention, but since it uses a sleeve, the diameter of the joint is increased to such a degree and handled when used in a semiconductor container or the like. There is a space problem.
[문제점을 해결하기 위한 수단][Means to solve the problem]
본 고안은 플라스틱제 조인트본체를 형성하고 있는 외부나사가 가공된 그 통부의 외부나사에 나사장착되는 너트로 이루어지고, 상기 외부나사가 가공된 통부의 선단부분은 외주측을 외부나사가 없는 통형면으로 하고 내주측에 원주로 되는 오목부를 형성하고, 상기 너트에는 상기 통부의 선단부분을 그 안내작용에 의해 꽉조여서 통부내에 삽입되어 있는 플라스틱튜브의 외주면에 압착시키기 위한 원추면을 형성함으로써 상술한 문제점의 해결을 도모한 것이다.The present invention consists of a nut which is screwed to the outer thread of the cylindrical part of which the external thread forming the plastic joint body is machined, and the outer end of the cylindrical part of the cylindrical part is the cylindrical surface without the external screw And a concave portion that is circumferentially formed on the inner circumferential side, and the nut has a conical surface for tightening the tip portion of the tubular portion by the guiding action to compress the outer circumferential surface of the plastic tube inserted into the tubular portion. It is intended to solve.
[작용][Action]
상기 구성의 플라스틱튜브용 조인트에 있어서는 조인트본체의 통부선단부분은 원추형 테이퍼로 되지 않고 통부가 두껍게 됨으로써 크리이프에 의해 빠져나가지 않는다.In the plastic tube joint of the above structure, the tube end portion of the joint body does not become a conical taper and the tube portion becomes thick so that it does not escape by creep.
또한, 통부의 내주측에 오목부가 있으므로 그 오목부에 따라 튜브에 팽창이 생기고 상대적으로 튜브의 변형량이 많아지며 또 튜브의 빠짐방향에 대한 각도가 커짐으로써 튜브의 빠잠방지작용이 강화된다.In addition, since there is a recess on the inner circumferential side of the tube, expansion occurs in the tube along the recess, and the amount of deformation of the tube is relatively increased, and the angle of the tube in the pulling out direction is increased, thereby enhancing the tube's immersion prevention effect.
[실시형태]Embodiment
제1도 및 제2도는 본 고안의 한 실시예를 도시한 것으로 제3도와 같은 부재에는 동일한 부호를 붙인다.1 and 2 show an embodiment of the present invention, and the same reference numerals are assigned to members like those of FIG.
즉, 1은 조인트본체, 1a는 통부, 1b는 외부나사, 1c은 통부의 선단부분, 1d는 계단부, 2는 너트, 2a는 내부나사, 2b는 내부나사에 접속하여 형성딘 원추면, 3은 프라스틱튜브이고, 상기 통부(1a)의 선단 부분(1c)은 나사가 없는 통형으로 되고 그 내주측에 원주로 되는 오목부(1c)가 형성되고 그 오목부의 선단에 모서리부(1f)가 남아 있다.In other words, 1 is the joint body, 1a is the cylinder, 1b is the external screw, 1c is the tip of the cylinder, 1d is the stepped portion, 2 is the nut, 2a is the internal screw, 2b is connected to the internal screw, 3 is It is a plastic tube, and the tip portion 1c of the tubular portion 1a is cylindrical without a screw, and a circumferential recess 1c is formed on the inner circumferential side thereof, and a corner portion 1f remains at the tip of the recess. .
상기 구성의 튜브용 조인트에 있어서는 통부(1a)내에 튜브(3)를 삽입하고 너트(2)를 통부(1a)의 외부나사(1b)에 결합시켜 회전하면 너트(2)의 원추면(2b)이 통부(1a)의 선단에 맞닿아 누르므로 제2도에 도시된 바와 같이 그 원추면의 안내작용에 의해 통부(1a)의 선단부분(1c)의 내주측의 모서리부(1f)에서 튜브(3)를 압입하도록 꽉 끼워져 변형한다. 그때 통부선단부분(1c)은 두껍게 되어 있으므로 크리이프에 의한 빠짐이 생기지 않는다.In the tube joint of the above configuration, when the tube 3 is inserted into the tube portion 1a and the nut 2 is engaged with the external screw 1b of the tube portion 1a, the conical surface 2b of the nut 2 is rotated. Since it presses against the tip of the cylinder part 1a, as shown in FIG. 2, the tube 3 is carried out at the edge part 1f of the inner peripheral side of the tip part 1c of the cylinder part 1a by guide action of the conical surface. Press firmly to deform. At that time, since the tube tip 1c is thick, the creep does not occur.
또한, 통부(1a)의 내주측의 오목부(1e)에 의해 튜브의 빠짐방향에 대한 만곡각도가 커짐과 동시에 오목부(1e)속으로의 튜브의 팽창이 생김으로서 튜브의 빠짐방지작용이 강화된다.Further, the concave portion 1e on the inner circumferential side of the tubular portion 1a increases the angle of curvature in the disengagement direction of the tube and at the same time, causes the tube to expand into the concave portion 1e, thereby enhancing the prevention of tube dropping. do.
또, 상기 오목무(1e)는 그 부분의 두께가 얇기 때문에 너트(2)의 원추면(2b)으로 통부의 선단부분(1c)을 변형시키기 위해 필요한 힘을 경감시키는 효과도 있다.Further, since the recess 1e has a thin thickness, the force required to deform the tip portion 1c of the tube portion to the conical surface 2b of the nut 2 is also reduced.
상기와 같이 조인트본체의 통부선단부분(1c)이 꽉 끼워짐으로서 모서리부(1f)가 강하게 튜브(3)를 압입해서 그 부분에 강고한 밀봉이 이루어진다. 또, 튜브압입각도가 커서 튜브이 선단이 통부(1a)의 내측단부(1d)에 강하게 압접하므로 그 부분에 대한 밀봉도 강화된다.As described above, the tube part tip portion 1c of the joint body is tightly fitted, so that the edge portion 1f presses the tube 3 strongly, thereby firmly sealing the portion. In addition, since the tube press-fit angle is large, the tip of the tube is strongly pressed against the inner end 1d of the tube 1a, so that the sealing of the portion is also enhanced.
[실시예 (1)][Example (1)]
제1도에 도시된 튜브용 조인트에 있어서, 조인트본체(1) 및 너트(2)를 각각 불소수지로 형성하고 조인트본체(1)는 그 통부선단부분(1c)의 두께를 1.7mm, 내주측모서리부(1f)의 각도를 90°, 오목무(1e)의 개구각을 30°, 최대 깊이를 0.7mm, 너트(2)의 원추면(2b)의 개구각을 30°로 하고 튜브(3)는 외경 10mm, 내경 8mm의 소수지튜브를 사용하고 제2도에 도시한 바와 같이 조인트본체(1)에 튜브(3)를 접속한 후 하기의 시험을 행했다.In the tube joint shown in FIG. 1, the joint body 1 and the nut 2 are each formed of fluorine resin, and the joint body 1 has a thickness of 1.7 mm and an inner circumferential side of the tube tip portion 1c. The angle of the corner portion 1f is 90 °, the opening angle of the recess 1e is 30 °, the maximum depth is 0.7mm, and the opening angle of the conical surface 2b of the nut 2 is 30 °, and the tube 3 is After using a hydrophobic tube having an outer diameter of 10 mm and an inner diameter of 8 mm and connecting the tube 3 to the joint body 1 as shown in FIG. 2, the following test was performed.
먼저 25℃에서의 수압시험에서는 35kgf/㎠에서 튜브가 파열했으나, 그 압력에 이를 때가지는 누설이나 튜브의 빠짐이 생기지 않았다. 또 100℃의 수압시험에서는 15kgf/㎠에서 튜브가 파열했으나, 그 압력에 이를 때까지는 누설이나 튜브의 빠짐이 생기지 않았다.First, the tube ruptured at 35 kgf / cm 2 in the hydraulic test at 25 ° C., but no leakage or tube dropping occurred until the pressure was reached. In the hydrostatic test at 100 ° C., the tube ruptured at 15 kgf / cm 2, but no leakage or detachment of the tube occurred until the pressure was reached.
다음에 100℃의 건조기내에 조인트를 끼워서 24시간 동안 유지한 후에 25℃로 냉각하고 질소가스압으로 15kgf/㎠까지의 부하를 가하는 열사이클시험을 20회 반복하여 행했으나 누설이나 튜브의 빠짐이 생기지 않았다.Next, after inserting the joint into a dryer at 100 ° C. for 24 hours and holding it for 24 hours, the heat cycle test was repeated 20 times, cooling to 25 ° C. and applying a load of 15 kgf / cm 2 by nitrogen gas pressure, but no leakage or tube dropping occurred. .
[실시예 (2)][Example (2)]
제1도에 도시한 튜브용 인트에 있어서, 조인트본체(1) 및 너트(2)를 각각 불소수지로 형성하고 조인트본체(1)는 그 통수선단부분(1c)의 두께를 1.5mm, 내주측모서리부(1f)의 각도를 80°, 오목무(1e)의 개구각을 35°, 오목부의 최대깊이를 0.5mm, 너트(2)의 원추면(2b)의 개구각을 35°로 하고, 튜브(3)는 외경 6km, 내경 4mm의 불소수지튜브를 사용하고 제2도에 도시한 바와 같이 조인트본체(1)에 튜브(3)를 접속한 후 하기의 시험을 행했다.In the tube insert shown in FIG. 1, the joint body 1 and the nut 2 are each formed of a fluorine resin, and the joint body 1 has a thickness of 1.5 mm and an inner circumferential side of the water passage front end portion 1c. The angle of the corner 1f is 80 °, the opening angle of the recess 1e is 35 °, the maximum depth of the recess is 0.5 mm, the opening angle of the conical surface 2b of the nut 2 is 35 °, and the tube is In (3), a fluorine resin tube having an outer diameter of 6 km and an inner diameter of 4 mm was used, and the tube 3 was connected to the joint body 1 as shown in FIG.
25℃에서의수압시험에서는 63kgf/㎠로 튜브가 파열했지만 그 압력에 이를 때까지는 누설이나 튜브의 빠짐이 생기지 않았다.In the water pressure test at 25 ° C., the tube ruptured at 63 kgf / cm 2, but no leakage or tube dropping occurred until the pressure was reached.
튜브 및 조인트내에 150℃의 실리콘오일을 넣어서 12kgf/㎠까지 가압했으나 누설이나 튜브의 빠짐이 생기지 않았다.A 150 ° C silicone oil was put into the tube and the joint to pressurize up to 12 kgf / cm 2, but no leakage or dropping of the tube occurred.
또한, 150℃ 건조기내에 조인트를 넣어 24시간 동안 유지한 후에 25℃로 냉각하고 질소가스압으로 15kgf/㎠까지의 부하를 가하는 열사이클시험을 20회 반복하여 행했으나 누설이나 튜브의 빠짐이 생기지 않았다.After the joints were put into a 150 ° C. dryer for 24 hours, the heat cycle test was repeated 20 times, cooling to 25 ° C. and applying a load of 15 kgf / cm 2 under nitrogen gas pressure, but no leakage or tube dropping occurred.
[고안의 효과][Effect of design]
이상 설명한 바와 같이 본 고안에 의하면 고온고압의 유체의 사용에 있어서 유체누설이나 튜브의 빠짐없이 생기지 않게 플라스틱튜브용 조인트를 얻게 된다. 특히, 본 고안에 의하면 종래이 조인트에 문제로 된 100 내지 150℃의 고온에도 충분히 대응하는 우수한 성능을 갖춘 플라스틱튜브용 조인트가 얻어진다.As described above, according to the present invention, a joint for a plastic tube is obtained without using fluid at high temperature and high pressure without leaking or leaking the tube. In particular, according to the present invention, a joint for a plastic tube having excellent performance corresponding to a high temperature of 100 to 150 ° C., which has conventionally been a problem for a joint, is obtained.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP155099[U] | 1987-10-09 | ||
| JP1987155099U JPH0326379Y2 (en) | 1987-10-09 | 1987-10-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR890009061U KR890009061U (en) | 1989-05-29 |
| KR930003264Y1 true KR930003264Y1 (en) | 1993-06-07 |
Family
ID=15598605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019880014975U Expired - Fee Related KR930003264Y1 (en) | 1987-10-09 | 1988-09-09 | Plastic Tube Joint |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH0326379Y2 (en) |
| KR (1) | KR930003264Y1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4123304B2 (en) * | 2006-09-28 | 2008-07-23 | ダイキン工業株式会社 | Pipe fittings, refrigeration equipment and heat pump hot water equipment |
| WO2015171998A2 (en) | 2014-05-09 | 2015-11-12 | Swagelok Company | Conduit fitting with components adapted for facilitating assembly |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4419237Y1 (en) * | 1965-06-01 | 1969-08-18 | ||
| JPS56171488U (en) * | 1980-05-21 | 1981-12-18 |
-
1987
- 1987-10-09 JP JP1987155099U patent/JPH0326379Y2/ja not_active Expired
-
1988
- 1988-09-09 KR KR2019880014975U patent/KR930003264Y1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| KR890009061U (en) | 1989-05-29 |
| JPH0158888U (en) | 1989-04-13 |
| JPH0326379Y2 (en) | 1991-06-07 |
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