JPS5848456Y2 - flare fittings - Google Patents
flare fittingsInfo
- Publication number
- JPS5848456Y2 JPS5848456Y2 JP1979129873U JP12987379U JPS5848456Y2 JP S5848456 Y2 JPS5848456 Y2 JP S5848456Y2 JP 1979129873 U JP1979129873 U JP 1979129873U JP 12987379 U JP12987379 U JP 12987379U JP S5848456 Y2 JPS5848456 Y2 JP S5848456Y2
- Authority
- JP
- Japan
- Prior art keywords
- flare
- joint
- tapered end
- concave spherical
- end surface
- 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.)
- Expired
Links
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
- 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
- F16L19/025—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges
- F16L19/028—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges the collars or flanges being obtained by deformation of the pipe wall
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints With Pressure Members (AREA)
Description
【考案の詳細な説明】
本考案はガス器具等の配管接続部に使用するフＬ／ヤ継
手に関するものである。[Detailed Description of the Invention] The present invention relates to a flare joint used for piping connections of gas appliances and the like.
周知のようにフレヤ継手は、第１図に示す如く、アルミ
ニウム乃至銅からなる配管１の管端を拡大させてフレヤ
部２を形成させ、このフレヤ部２を、器具部品側等の雄
ねじ部３におけるテーパ端面３′に接触させた上で袋ナ
ツト４で締め付け、フレヤ部２の内面を前記のテーパ端
面３′に圧着させるようにした継手である。As is well known, in the flare joint, as shown in FIG. 1, the end of a pipe 1 made of aluminum or copper is enlarged to form a flared part 2, and this flared part 2 is connected to a male threaded part 3 on the side of a device component, etc. This is a joint in which the inner surface of the flare portion 2 is pressed into contact with the tapered end surface 3' by tightening with a cap nut 4 after contacting the tapered end surface 3'.
ところでフレヤ継手は上記のように簡易な構造からなる
ので配管作業等が容易であり多用されるものである。By the way, since the flare joint has a simple structure as described above, piping work, etc. is easy, and it is often used.
しかるに一方ではこのフレヤ継手は管の材質乃至硬度、
さらにはフレヤ部２の形成精度等によりときにはフレヤ
内面と雄ねじ部３のテーパ端面３′との圧着が正常にな
されず、この圧着部に細孔が生じたりしてガス漏れ等を
ひき起すことがあるという難点も有している。However, on the other hand, this flare joint can be used depending on the material or hardness of the pipe.
Furthermore, due to the formation precision of the flare portion 2, the inner surface of the flare and the tapered end surface 3' of the male threaded portion 3 may not be properly crimped, which may cause pores to form in this crimped portion, resulting in gas leakage, etc. It also has some drawbacks.
そこで従来は上記の難点に対処して第２図にも示すよう
に、フレヤ部２の拡大角度θを定めたのち、この角度方
向におけるフレヤ２の長さｔをできるだけ長くとり、雄
ねじ部３側との接触面積を犬となして、正常な接合が得
られるようにしていた。Therefore, in the past, in order to deal with the above-mentioned difficulties, as shown in FIG. The contact area was made into a dog shape to ensure normal bonding.
しかしフレヤ部２の長さｔを犬にすると、袋ナツト４に
よる締め付は圧も犬にしなければならず、この点で締め
付は圧を限度以上にすると部品の破損を招き易く、また
作業工数の増大も伴なうので決して万全な解決策とはな
り得なかった。However, if the length t of the flare part 2 is set to 1, the pressure when tightening with the cap nut 4 must also be set at 1. This was never a perfect solution as it also involved an increase in man-hours.
ここにおいて本考案はダブルフレヤの内面を凹球面状と
することにより、上記の点を解決するようにしたフレヤ
継手を提供しようとしたものである。The present invention attempts to provide a flare joint that solves the above-mentioned problems by forming the inner surface of the double flare into a concave spherical shape.
以下本考案をダブルフレヤのフレヤ継手に適用した図の
実施例に基づいて具体的に説明する。Hereinafter, the present invention will be specifically explained based on the embodiment shown in the figure, in which the present invention is applied to a double-flare flare joint.
第３図において符号Ｐは一例としてアルミニウム材質か
らなるガス器具等への配管にして、その管端をダブルフ
レヤＦに拡大させるとともに、このダブルフレヤＦの内
面を凹球面状に形成する。In FIG. 3, reference numeral P denotes, for example, a pipe made of aluminum for a gas appliance or the like, the end of which is enlarged into a double flare F, and the inner surface of the double flare F is formed into a concave spherical shape.
而して、上記のように形成させたフレヤ内面の球面状部
を器具部品等側における雄ねじ部３のテーパ端面３′に
接触させた上で袋ナツト４で締め付けると、このフレヤ
内面は凹球面状とされて図示のようにａ部、ｂ部および
０部が形成されているので、その凸部側即ちａ部→ｂ部
→Ｃ部の順に押し潰され、特にこの０部で示す内周縁部
の全周がテーパ端面３１にくい込むように線接合態様で
圧接される。When the spherical portion of the inner surface of the flare formed as described above is brought into contact with the tapered end surface 3' of the male threaded portion 3 on the instrument component side and then tightened with the cap nut 4, the inner surface of the flare becomes a concave spherical surface. As shown in the figure, a part a, a part b, and a part 0 are formed, so the convex part side, that is, part a → part b → part C, is crushed in the order, especially the inner peripheral edge indicated by this part 0. The entire periphery of the part is pressed into contact with the tapered end surface 31 in a line joining manner.
したがってフレヤＦの内面とテーパ端面３′との緊密な
圧着状態が得られる。Therefore, a tight pressure bond between the inner surface of the flare F and the tapered end surface 3' can be obtained.
上記のようにフレヤＦの内面は当接した凸部端から順次
押し潰されていき、内周縁部（０部）は線接合態様でく
い込むように圧接されるものであるから、小さな締め付
は圧で非常に緊密な接合が得られる。As mentioned above, the inner surface of the flare F is crushed sequentially from the end of the convex part that comes into contact with it, and the inner peripheral edge (part 0) is press-welded in a line-jointed manner, so that small tightening is possible. A very tight bond can be obtained with pressure.
また接合部の漏洩防止のためには、接合状態において被
接合側部材（雄ねじ部３）の軸心と当該配管Ｐ側の管軸
とが一致していることが重要であるが、接合に際して仮
に雄ねじ部３の軸心が配管Ｐ側の管軸からずれた状態で
あてがわれても、フレヤ内面は凹球面状とされているの
で、雄ねじ部３の先端縁部はこの凹球面部を滑らかに移
動して相互の軸心が精度よく一致する。In addition, in order to prevent leakage at the joint, it is important that the axis of the member to be joined (externally threaded part 3) coincides with the pipe axis of the pipe P in the joined state. Even if the axial center of the male threaded portion 3 is misaligned from the pipe axis on the piping P side, the inner surface of the flare is a concave spherical surface, so the tip edge of the male threaded portion 3 can smooth this concave spherical surface. The two axes align with each other with high accuracy.
以上詳述したように、本考案によればダブルフレヤの内
面を凹球面状としたから、比較的小さな締め付は圧でフ
レヤ内面は接続ねじ部等におけるテーパ端面に緊密に圧
着され的確な接合を得ることができるという極めて優れ
た効果を発揮する。As detailed above, according to the present invention, since the inner surface of the double flare is made into a concave spherical shape, the inner surface of the flare is tightly crimped to the tapered end surface of the connection thread, etc., with a relatively small tightening pressure, and accurate joining is achieved. It exhibits extremely excellent effects that can be obtained.
従ってガス器具等における配管の継手として極めて好適
なフレヤ継手を提供し得るものである。Therefore, it is possible to provide a flare joint that is extremely suitable as a joint for piping in gas appliances and the like.
第１図は従来のフレヤ継手を示す縦断面図、第２図は同
上におけるフレヤ部をさらに詳細に説明するための一部
断面図、第３図は本考案の実施例たるフレヤ継手を示す
側面図で一部を断面で示す。
３：雄ねじ部、３１：テーパ端面、４：袋ナツト、Ｆ：
ダブルフレヤ、Ｐ：配管。Fig. 1 is a longitudinal cross-sectional view showing a conventional flare joint, Fig. 2 is a partial cross-sectional view for explaining the flare part in the same above in more detail, and Fig. 3 is a side view showing a flare joint as an embodiment of the present invention. A part is shown in cross section in the figure. 3: Male thread, 31: Tapered end surface, 4: Cap nut, F:
Double flare, P: Piping.
Claims (1)
状としたことを特徴とするフレヤ継手。A flare joint characterized in that the inner surface of a double flap formed by enlarging the tube end is a concave spherical surface.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979129873U JPS5848456Y2 (en) | 1979-09-21 | 1979-09-21 | flare fittings |
| FR8020235A FR2465941A1 (en) | 1979-09-21 | 1980-09-19 | Gas-tight joint for gas appliance feed pipes - has double concave bellmouth compressed by profiled cap nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979129873U JPS5848456Y2 (en) | 1979-09-21 | 1979-09-21 | flare fittings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5647983U JPS5647983U (en) | 1981-04-28 |
| JPS5848456Y2 true JPS5848456Y2 (en) | 1983-11-05 |
Family
ID=15020410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1979129873U Expired JPS5848456Y2 (en) | 1979-09-21 | 1979-09-21 | flare fittings |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS5848456Y2 (en) |
| FR (1) | FR2465941A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3719585C2 (en) * | 1986-06-27 | 1995-04-27 | Volkswagen Ag | Detachable tight connection between two neighboring pipes |
| KR910004749B1 (en) * | 1988-12-31 | 1991-07-10 | 삼성전관 주식회사 | System of soldering biased yoke |
| JP2540571Y2 (en) * | 1991-10-02 | 1997-07-09 | 臼井国際産業株式会社 | Double-wall flare structure for connecting pipe ends |
| JP2553658Y2 (en) * | 1991-10-02 | 1997-11-12 | 臼井国際産業株式会社 | Connection flare structure at pipe end |
| US5529349A (en) * | 1993-08-25 | 1996-06-25 | Itt Corporation | Mounting apparatus with reduced resistance bead seal |
| US5489127A (en) | 1993-08-25 | 1996-02-06 | Itt Corporation | Mounting apparatus with reduced resistance bead seal |
| DE9420502U1 (en) * | 1994-11-30 | 1995-07-20 | Witzenmann GmbH, Metallschlauch-Fabrik Pforzheim, 75175 Pforzheim | Connection between a pipe and a tubular line element |
| JP3307345B2 (en) * | 1998-10-29 | 2002-07-24 | トヨタ自動車株式会社 | Connection structure of tube |
| WO2015117274A1 (en) * | 2014-02-09 | 2015-08-13 | 孙海潮 | Connection screw nut for dedicated use in split air conditioning refrigerant connection pipelines |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2413089A (en) * | 1944-07-10 | 1946-12-24 | Roy W Solomon | Fitting |
| US2545168A (en) * | 1948-10-07 | 1951-03-13 | Brockway Company | Pipe connector |
| US3258278A (en) * | 1960-06-17 | 1966-06-28 | Boeing Co | Lightweight fluid coupling system |
| DE1891703U (en) * | 1963-09-02 | 1964-04-23 | Bernh Drost K G | DOUBLE TUBE FITTING. |
| US3451698A (en) * | 1966-07-20 | 1969-06-24 | Richard O Chakroff | Coupling having concentric spherical surfaces sealed by line contact |
| US3715800A (en) * | 1969-12-16 | 1973-02-13 | Mueller Co | Method of making a coupling joint |
| FR2230923A1 (en) * | 1973-05-24 | 1974-12-20 | Peugeot & Renault | Hydraulic pipe coupling for vehicle brakes - ends of pipes are deformed to produce cooperating conical seats |
| JPS5349052Y2 (en) * | 1973-08-17 | 1978-11-24 |
-
1979
- 1979-09-21 JP JP1979129873U patent/JPS5848456Y2/en not_active Expired
-
1980
- 1980-09-19 FR FR8020235A patent/FR2465941A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2465941A1 (en) | 1981-03-27 |
| JPS5647983U (en) | 1981-04-28 |
| FR2465941B1 (en) | 1983-12-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5848456Y2 (en) | flare fittings | |
| US6202284B1 (en) | Pipe fitting | |
| JPS606713Y2 (en) | Metal pipe fitting device | |
| JPS636291A (en) | Screw joint for large-diameter casing | |
| JPS5931986Y2 (en) | Tube end structure of bellows-like flexible tube | |
| JP3062049U (en) | Pipe fittings | |
| JPH029174Y2 (en) | ||
| JPS5847349Y2 (en) | Cantugate | |
| JPH11325340A (en) | Device for connecting flare joint with flareless joint | |
| JPH0232951Y2 (en) | ||
| JPS58186289U (en) | pipe connection device | |
| KR930004987Y1 (en) | Pipe fitting | |
| JPS5848452Y2 (en) | pipe fittings | |
| JPS5819187U (en) | Soft hose fitting | |
| JPS5929195Y2 (en) | Packing of high pressure pipe joints | |
| JPS60184488U (en) | pipe fittings | |
| JPH0356706Y2 (en) | ||
| JPS6086687U (en) | pipe fittings | |
| JPS5921186U (en) | pipe fittings | |
| JPS5817986Y2 (en) | pipe fittings | |
| JPS643036Y2 (en) | ||
| JPS5896180U (en) | flare pipe fittings | |
| JPS5949471B2 (en) | pipe joint | |
| JPS6075790U (en) | Fittings for piping connections | |
| JPS5865483U (en) | pipe fittings |