JP2935720B2 - Fitting for connecting metal piping - Google Patents
Fitting for connecting metal pipingInfo
- Publication number
- JP2935720B2 JP2935720B2 JP1238690A JP1238690A JP2935720B2 JP 2935720 B2 JP2935720 B2 JP 2935720B2 JP 1238690 A JP1238690 A JP 1238690A JP 1238690 A JP1238690 A JP 1238690A JP 2935720 B2 JP2935720 B2 JP 2935720B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- bulging wall
- joint
- wall
- projecting
- 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 - Fee Related
Links
Landscapes
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Description
（産業上の利用分野） 本発明は一般に自動車或いは各種の機械、装置等に給
油、給気の供給路等として配設される管径20m/m程度以
下の比較的細径からなる金属配管の接続用継手に関する
ものである。 （従来の技術） 従来、この種の接続用継手としては例えば第７図に示
すように、流通孔（12）を有する継手本体（11）の先端
の座面部（13）に配管（P1）の接続端部に設けた膨出壁
としてのダブルフレアー（P1′）部を当接した状態で、
該配管側に組込んだナット（14）による継手本体（11）
との螺合によりダブルフレアー（P1′）部を前記座面
（13）とナット（14）の座面（15）間に挾圧して接続す
るように構成されていた。 （発明が解決しようとする課題） しかしながら、このような従来の技術においては、ナ
ット（14）の軸芯を配管（（P1）が貫通しているため該
配管が障害となってナット（14）の螺着に際し軸芯方向
手前側よりのラチェットレンチや自動螺着機の使用がで
きず、ナットの側面よりスパナ、モンキーレンチ等の手
動工具にて多数回の脱着を繰り返しつつ締め付けるため
工数や時間が大幅にかかり締付け時の煩わしさを招くば
かりでなく、締付け力を均一となし得ず、組付け不良
や、反対に過大な締付け力に起因してダブルフレアー
（P1′）部での潰れ、変形を発生することとなり、取外
し後の再度の配管（P1）の接続使用を不可能とするもの
であった。また配管（P1）の接続に際して直接ナット
（14）によるダブルフレアー（P1′）面への回動方向の
締付けに伴い該ダブルフレアー部に捩れ方向の応力と挾
圧による薄肉化を生じ、加振状態下にあってその首下部
に疲労等による亀裂、折損や漏れを誘発する傾向にある
等の問題を有するものであった。 本発明は従来技術の有する前記問題に鑑みてなされた
ものであり、エアドライバ等の自動螺着機の使用を可能
とし、且つ膨出壁部での捩れによる応力をなくしてその
首下部の亀裂、折損を防ぎ、同時に接続時にあって組付
け不良を防止して係圧力を略均一となすと共に、膨出壁
部での潰れ、変形を防止せしめ、再度の配管の接続使用
を支障なく行うことのできる金属配管接続用継手を提案
することを目的とするものである。(Industrial Application Field) The present invention generally relates to a metal pipe having a relatively small diameter of about 20 m / m or less, which is disposed as a supply path for oil supply and air supply to an automobile or various machines and devices. The present invention relates to a connection joint. (Prior Art) Conventionally, as a connecting joint of this type, for example, as shown in FIG. 7, a pipe (P 1 ) is provided on a seat surface (13) at a tip end of a joint body (11) having a communication hole (12). With the double flare (P 1 ′) part as the bulging wall provided at the connection end of
Joint body (11) with nut (14) assembled on the piping side
The double flare (P 1 ′) portion is pressed and connected between the seating surface (13) and the seating surface (15) of the nut (14). (Problems to be Solved by the Invention) However, in such a conventional technique, since the pipe ((P 1 ) passes through the axis of the nut (14), the pipe becomes an obstacle and the nut (14) is obstructed. The ratchet wrench or the automatic screwing machine cannot be used from the near side in the axial center when screwing in), and the nut is tightened repeatedly by using a manual tool such as a spanner or a monkey wrench. Not only does it take much time and inconvenience in tightening, but also the tightening force cannot be made uniform, and due to improper assembly or excessive tightening force, the double flare (P 1 ′) collapse, will occur deformation was achieved, and not the connection used again pipe after removal (P 1). the double flare by direct nut upon connection of the pipe (P 1) (14) ( times of the P 1 ') surface With the tightening in the direction, the double flare section becomes thinner due to the stress in the torsional direction and the pinching, and tends to induce cracks, breakage and leakage at the lower part of the neck due to fatigue etc. under the vibrating state. SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the related art, and enables the use of an automatic screwing machine such as an air driver and the stress caused by torsion at a bulging wall portion. To prevent cracking and breakage at the lower part of the neck, and at the same time to prevent improper assembly due to connection and to make the engaging pressure almost uniform, to prevent collapse and deformation at the bulging wall, and to re-plumb. It is an object of the present invention to propose a metal pipe connection joint that can perform connection use without any trouble.
上記目的を達成するため本発明の第１の実施態様は、
軸芯部に流通孔を貫設した継手本体の配管との接続当接
部をなす内部の座面部にシール部材を備えると共に、該
座面部に連って前記配管の接続側に設けた外方への環状
膨出壁部の背面に係圧する傾斜面による断面三角形状の
係合溝を対向して設けた一対からなる突出壁を有して形
成せしめ、該突出壁の少なくとも一方を開閉自在とな
し、接続状態にあって前記配管の径方向に該突出壁部を
相互にボルトにより固定することにより前記膨出壁部を
係合溝内部に圧接するように構成した金属配管接続用継
手を特徴とするものである。 また本発明の第２の実施態様は、軸芯部にシール部材
を備えた流通孔を貫設した継手本体の配管との接続当接
部をなす内部の座面部を設け、且つ該座面部に連って前
記配管の接続側に設けた外方への環状膨出壁部の背面に
係圧する傾斜面による断面三角形状の係合溝を対向して
設けた一対からなる突出壁を有して形成せしめ、該突出
壁の少なくとも一方を開閉自在となし、接続状態にあっ
て前記配管の径方向に該突出壁部を相互にボルトにより
固定することにより前記膨出壁部を係合溝内部に圧接す
ると共に、前記膨出壁より延びる先端の外周に前記シー
ル部材を圧接して構成した金属配管接続用継手を特徴と
するものである。 そして本発明においては、前記配管の膨出壁部の背面
にテーパ付きワッシャーを設けて構成することが好まし
い。 （作 用） 本発明はこのように構成されているため、配管の接続
に際して継手本体に設けた少なくとも一方の突出壁部を
開いた状態で該配管の接続側の膨出壁部を係合溝部に差
し込み、しかる後に該突出壁部を閉じて相互に固定する
ことにより、膨出壁部を係合溝内部にあって軸芯方向に
簡易に圧接せしめることとなるため、例え前記突出壁部
相互を螺着により固定する場合でも螺子軸芯に障害とな
るものがなく軸芯方向から１回の脱着ですむラチェット
レンチや自動螺着機の使用を可能として組付け性を大幅
に改善し、且つ膨張壁部での捩れによる応力がなく接続
することができ、従って加振状態下でもその首下部での
亀裂、折損を効果的に軽減することができ、また組付け
不良を防止して膨出壁部への係圧力を略均一となすと共
に、該膨出壁部での潰れ、変形の憂いがなく再度の接続
使用を支障なく行うことができることとなる。 （実施例） 以下、本発明の実施例を図面に基づいて説明すれば、
第１図は本発明の金属配管接続用継手を示す接続状態時
の上面図、第２図は第１図Ａ−Ａ線の一部切欠き断面
図、第３図及び第４図はそれぞれ他の実施例を示す第２
図相当図、第５図は更に他の実施例の部分拡大図、第６
図（イ）は更に別の実施例の第２図相当図、第６図
（ロ）は第６図（イ）の正面図であって、（１）は継手
本体であり、軸芯部に流通孔（２）を貫設し、且つ配管
（Ｐ）との接続当接部をなす内部の座面部（３）に環状
の弾性シール部材（４）を備えてなるものである。そし
て座面部（３）に連って前記配管（Ｐ）の接続側に設け
た外方への環状膨出壁（Ｐ′）部の背面に係圧する傾斜
面による断面三角形状の係合溝（５）を対向して設けた
一対からなる内周面を略半円錐状の突出壁（1',1"）を
有して形成せしめ、更にこれら突出壁（1',1"）の少な
くとも一方をピン着或いはヒンジ（６）等により矢印方
向に開閉自在に構成されるものであり、配管（Ｐ）の接
続状態にあって配管（Ｐ）の径方向に該突出壁部を相互
に六角穴付きボルト（７）や十字ボルト等により固定す
ることにより膨出壁（P'）部を係合溝（５）内部に軸芯
方向に圧接して接続構成するものである。尚第３図のよ
うに配管（Ｐ）の先端（Pa）を流通孔（２）側へ突出す
るよう構成すると位置決めが容易となる。又、第４図に
おいて（８）はテーパ付きワッシャーであり、接続時に
環状膨出部（P'）の座面部（３）への押圧をより確実に
するものである。 更に第５図のようにシール部材（４）を流通孔（２）
側に設け前記先端（Pa）の外周に圧接するよう構成する
と座面部（３）とシール部とが別となり、シール部材
（４）の耐久性を増すことができる。 又、ボルト（７）は第６図（イ）及び（ロ）のように
配管（Ｐ）に軸芯方向に固定することもできる。 （発明の効果） 以上述べた通り本発明によれば、特に継手本体（１）
に設けた一対からなる突出壁（１′、１″）の少なくと
もその一方を開閉自在となし、また接続状態にあって前
記配管（Ｐ）の径方向に該突出壁部を相互にボルト
（７）により固定する構成であるために自動螺着機等の
使用が可能となるため組付け性が著しく改善され、且つ
背面からの軸芯方向への係圧に伴って金属配管（Ｐ）の
外方への環状膨出壁（Ｐ′）部を継手本体（１）の係合
溝（５）内部に圧接するように構成するため、接続に際
して環状膨出壁（Ｐ′）部での捩れによる応力がなく、
従って加振状態下にあっても首下部での疲労等による亀
裂、折損を効果的に防止することができ、同時に組付け
不良を防止して係圧力を略均一となすと共に、環状膨出
壁（Ｐ′）部の潰れ、変形の生ずる憂いがなく、配管
（Ｐ）の取り外し後の再度の接続使用を支障なく行うこ
とができる等、極めて有用な金属配管接続用継手を提供
することができる。In order to achieve the above object, a first embodiment of the present invention provides:
A seal member is provided on an inner seat surface portion forming a connection abutting portion with a pipe of a joint body having a through hole formed in a shaft core portion, and an outer portion provided on a connection side of the pipe following the seat surface portion. A pair of protruding walls provided with opposed triangular-shaped engaging grooves formed by inclined surfaces that press against the rear surface of the annular bulging wall portion, and at least one of the protruding walls can be freely opened and closed. None, characterized by a metal pipe connection joint in which the projecting wall portions are fixed to each other in the radial direction of the pipe by bolts so that the bulging wall portions are pressed into the engagement grooves. It is assumed that. In a second embodiment of the present invention, an inner seat surface portion is provided as an abutment portion for connection with a pipe of a joint body having a through hole provided with a seal member in a shaft core portion, and the seat surface portion is provided on the seat surface portion. A pair of protruding walls having a triangular cross-section engaging groove formed by an inclined surface that presses against the back surface of an outwardly extending annular bulging wall portion provided on the connection side of the pipe in succession; The projecting walls are made openable and closable, and the projecting walls are fixed to each other in the radial direction of the pipe by bolts in the connected state, so that the bulging wall is inserted into the engaging groove. The present invention is characterized by a metal pipe connection joint formed by pressing the seal member against the outer periphery of a tip extending from the bulging wall while being pressed. In the present invention, it is preferable that a tapered washer is provided on the back surface of the bulging wall of the pipe. (Operation) Since the present invention is configured as described above, at the time of connection of the pipe, at least one protruding wall provided on the joint body is opened, and the bulging wall on the connection side of the pipe is engaged with the engagement groove. Then, the protruding wall portions are closed and fixed to each other, so that the bulging wall portion is easily pressed in the axial direction inside the engagement groove. Even if the screw is fixed by screwing, there is no obstacle to the screw shaft core, and it is possible to use a ratchet wrench or an automatic screwing machine that only needs to be attached and detached once from the axis direction, greatly improving the assemblability, and Connection can be made without stress due to torsion at the expansion wall, so cracks and breaks at the lower part of the neck can be effectively reduced even under vibration, and bulging can be prevented by preventing improper assembly The pressure applied to the wall is made substantially uniform, and Collapse of wall portion, so that the grief again the connection used without modification can be carried out without trouble. (Example) Hereinafter, an example of the present invention will be described with reference to the drawings.
FIG. 1 is a top view of a joint for connecting a metal pipe of the present invention in a connected state, FIG. 2 is a partially cutaway sectional view taken along the line AA of FIG. 1, and FIGS. Second Example of the Second Embodiment
FIG. 5 is a partially enlarged view of another embodiment, and FIG.
Fig. (A) is a diagram corresponding to Fig. 2 of a further embodiment, Fig. 6 (B) is a front view of Fig. 6 (A), (1) is a joint body, and An annular elastic seal member (4) is provided on an inner seat surface (3) which penetrates the flow hole (2) and forms a contact portion with the pipe (P). An engagement groove having a triangular cross section is formed by an inclined surface which presses against the back surface of an outwardly expanding annular bulging wall (P ') provided on the connection side of the pipe (P) in connection with the seat surface (3). 5), a pair of inner peripheral surfaces provided facing each other are formed to have substantially semi-conical projecting walls (1 ', 1 "), and at least one of these projecting walls (1', 1") is formed. Can be freely opened and closed in the direction of the arrow by attaching a pin or by a hinge (6). The protruding wall portions are connected to each other in the radial direction of the pipe (P) by a hexagonal hole. The bulging wall (P ') is connected to the inside of the engagement groove (5) by being pressed in the axial direction by fixing with a bolt (7) or a cross bolt. If the tip (Pa) of the pipe (P) is configured to protrude toward the flow hole (2) as shown in FIG. 3, the positioning becomes easy. In FIG. 4, reference numeral (8) denotes a tapered washer, which more reliably presses the annular bulge (P ') against the seat surface (3) during connection. Further, as shown in FIG. 5, the sealing member (4) is connected to the communication hole (2).
If it is provided so as to be in pressure contact with the outer periphery of the tip (Pa), the seat portion (3) and the seal portion are separated, and the durability of the seal member (4) can be increased. Further, the bolt (7) can be fixed to the pipe (P) in the axial direction as shown in FIGS. 6 (a) and 6 (b). (Effects of the Invention) As described above, according to the present invention, particularly the joint body (1)
At least one of the pair of projecting walls (1 ', 1 ") provided in the pipe (P) is openable and closable, and the projecting walls are connected to each other in the radial direction of the pipe (P) by bolts (7). ) Makes it possible to use an automatic screwing machine or the like, so that the assemblability is significantly improved, and the outside of the metal pipe (P) is caused by the pressure from the back in the axial direction. Is formed so as to be pressed against the inside of the engagement groove (5) of the joint body (1), so that the connection is caused by twisting at the annular bulging wall (P '). No stress,
Therefore, even under the vibrating condition, it is possible to effectively prevent cracks and breakage due to fatigue and the like at the lower part of the neck, and at the same time, prevent improper assembly, make the engaging pressure substantially uniform, and make the annular bulging wall. It is possible to provide an extremely useful joint for connecting metal pipes, for example, since there is no fear that the (P ') portion is crushed or deformed, and the pipes (P) can be used again after being removed without any trouble. .
第１図は本発明の一実施例を示す金属配管接続用継手の
接続状態時の上面図、第２図は第１図Ａ−Ａ線の一部切
欠き断面図、第３図及び第４図はそれぞれ他の実施例を
示す第２図相当図、第５図は更に他の実施例の部分拡大
断面図、第６図（イ）は更に別の実施例の第２図相当
図、第６図（ロ）は第６図（イ）の正面図、第７図は従
来例の接続用継手の接続状態時を示す一部切欠き縦断面
図である。 （１）……継手本体、（1',1"）……突出壁、（２）…
…流通孔、（３）……座面部、（４）……シール部材、
（５）……係合溝、（Ｐ）……配管、（Ｐ′）……膨出
壁。FIG. 1 is a top view of a joint for connecting metal pipes showing an embodiment of the present invention in a connected state, FIG. 2 is a partially cutaway sectional view taken along line AA of FIG. 1, FIG. 3 and FIG. 5 is a view corresponding to FIG. 2 showing another embodiment, FIG. 5 is a partially enlarged cross-sectional view of still another embodiment, and FIG. 6 (a) is a view corresponding to FIG. 2 of another embodiment. FIG. 6 (b) is a front view of FIG. 6 (a), and FIG. 7 is a partially cutaway longitudinal sectional view showing a connection state of a conventional connection joint. (1) ... joint body, (1 ', 1 ") ... projecting wall, (2) ...
... flow hole, (3) ... seat surface, (4) ... seal member,
(5) ... engagement groove, (P) ... piping, (P ') ... bulging wall.
Claims (3)
（１）の配管（Ｐ）との接続当接部をなす内部の座面部
（３）にシール部材（４）を備えると共に、該座面部に
連って前記配管（Ｐ）の接続側に設けた外方への環状膨
出壁（Ｐ′）部の背面に係圧する傾斜面による断面三角
形状の係合溝（５）を対向して設けた一対からなる突出
壁（１′、１″）を有して形成せしめ、該突出壁
（１′、１″）の少なくとも一方を開閉自在となし、接
続状態にあって前記配管（Ｐ）の径方向に該突出壁部を
相互にボルト（７）により固定することにより前記膨出
壁（Ｐ′）部を係合溝（５）内部に圧接するように構成
したことを特徴とする金属配管接続用継手。1. A sealing member (4) is provided on an inner seat surface (3) of a joint body (1) having a through hole (2) penetrating through a shaft core and serving as a contact portion with a pipe (P). And an engagement groove having a triangular cross section formed by an inclined surface which presses against the back surface of an outwardly expanding annular bulging wall (P ') provided on the connection side of the pipe (P) following the seating surface. 5) is formed having a pair of protruding walls (1 ', 1 ") provided facing each other, and at least one of the protruding walls (1', 1") is made openable and closable, and is in a connected state. The projecting wall portions are fixed to each other in the radial direction of the pipe (P) with bolts (7) so that the bulging wall (P ') portion is pressed into the engagement groove (5). A joint for connecting metal pipes, characterized in that:
（２）を貫設した継手本体（１）の配管（２）との接続
当接部をなす内部の座面部（３）を設け、且つ該座面部
に連って前記配管（２）の接続側に設けた外方への環状
膨出壁（Ｐ′）部の背面に係圧する傾斜面による断面三
角形状の係合溝（５）を対向して設けた一対からなる突
出壁（１′、１″）を有して形成せしめ、該突出壁
（１′、１″）の少なくとも一方を開閉自在となし、接
沿状態にあって前記配管（Ｐ）の径方向に該突出壁部を
相互にボルト（７）により固定することにより前記膨出
壁（Ｐ′）部を係合溝（５）内部に圧接すると共に、前
記膨出壁（Ｐ′）より延びる先端（Pa）の外周に前記シ
ール部材（４）を圧接して構成したことを特徴とする金
属配管接続用継手。2. An inner seat surface portion (3) serving as a connecting contact portion with a pipe (2) of a joint body (1) having a through hole (2) provided with a seal member (4) in a shaft core portion. ), And a triangular cross-section engagement by an inclined surface that presses against the rear surface of the outwardly expanding annular bulging wall (P ′) provided on the connection side of the pipe (2) following the seating surface. The groove (5) is formed to have a pair of projecting walls (1 ', 1 ") provided facing each other, and at least one of the projecting walls (1', 1") is made openable and closable. In this state, the projecting wall portions are fixed to each other in the radial direction of the pipe (P) by bolts (7) so that the bulging wall (P ') portion is pressed against the inside of the engagement groove (5) and A joint for connecting a metal pipe, wherein the seal member (4) is pressed against an outer periphery of a tip (Pa) extending from the bulging wall (P ').
にテーパ付きワッシャー（８）を設けたことを特徴とす
る請求項１又は２記載の金属配管接続用継手。3. The joint according to claim 1, wherein a tapered washer (8) is provided on the back surface of the bulging wall (P ') of the pipe (P).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1238690A JP2935720B2 (en) | 1990-01-22 | 1990-01-22 | Fitting for connecting metal piping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1238690A JP2935720B2 (en) | 1990-01-22 | 1990-01-22 | Fitting for connecting metal piping |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03219192A JPH03219192A (en) | 1991-09-26 |
| JP2935720B2 true JP2935720B2 (en) | 1999-08-16 |
Family
ID=11803831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1238690A Expired - Fee Related JP2935720B2 (en) | 1990-01-22 | 1990-01-22 | Fitting for connecting metal piping |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2935720B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5283951A (en) * | 1992-12-17 | 1994-02-08 | Curtis Products, Inc. | Method of producing a tubing for use as a flow conduit |
| DE19526316C3 (en) * | 1995-07-19 | 2002-03-07 | Walterscheid Gmbh Jean | pipe connection |
-
1990
- 1990-01-22 JP JP1238690A patent/JP2935720B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03219192A (en) | 1991-09-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |