JP2010270880A - Pipe connecting method and pipe connecting structure for the same - Google Patents

Pipe connecting method and pipe connecting structure for the same Download PDF

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JP2010270880A
JP2010270880A JP2009125149A JP2009125149A JP2010270880A JP 2010270880 A JP2010270880 A JP 2010270880A JP 2009125149 A JP2009125149 A JP 2009125149A JP 2009125149 A JP2009125149 A JP 2009125149A JP 2010270880 A JP2010270880 A JP 2010270880A
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surface portion
butt
connection
contact
pipe
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Eisaku Sato
栄作 佐藤
Kenichiro Hayashi
健一郎 林
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Fuji Industrial Co Ltd
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Fuji Industrial Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a pipe connecting method and a pipe connecting structure, allowing connection with high sealing performance without using any intervening member such as a seal material although being simple in structure and improved to be simply executable in the field. <P>SOLUTION: Between connection openings 3, 4 of tubular members 1, 2 to be butt-connected, the connection opening 3 is formed in a socket 5a having a butt connection part 5 which is formed in an almost L shape as viewed in the cross section. The connection opening 4 is formed in a spigot 6a having a butt connection part 6 which is formed in an almost L shape as viewed in the cross section. The spigot 6a is butted against and set inside the socket 5a and is fastened from an outer peripheral side of the socket 5a by a fastening member 7, so that seal bearing pressure is increased in both two surfaces in a pipe longitudinal direction and a pipe circumference direction of the tubular members 1, 2 and the connection openings 3, 4 are connected with each other. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

本発明は、金属やその他の硬質材料によって形成されている直管やエルボ管その他の異形管などの管状部材の管接続方法および管接続構造に係り、特に、突合せ接続される管状部材相互の接続口同士を圧接させて高いシール性にて接続するのに有効なレンジフードなどの換気装置用の管接続方法および管接続構造に関する。   The present invention relates to a pipe connecting method and a pipe connecting structure for tubular members such as straight pipes, elbow pipes and other deformed pipes formed of metal or other hard materials, and in particular, connection between tubular members to be butt-connected. The present invention relates to a pipe connection method and a pipe connection structure for a ventilator such as a range hood, which are effective for bringing the mouths into pressure contact and connecting with high sealing performance.

接続口同士を突合せて接続される管状部材は、開口縁部から外周方向に突出させたフランジが設けられていて、このフランジ同士を相互に突合せてボルト・ナットなどの締付け部材を用いて接続することが一般的に行われている接続手法である。
ところで、金属やその他の硬質材料によって形成されている管状部材の接続口に設けられているフランジ同士を単に突合せて接続する手法では、フランジ間の高いシール性は期待できない。
The tubular member connected by abutting the connection ports is provided with a flange projecting in the outer peripheral direction from the opening edge, and this flange is abutted with each other and connected using a tightening member such as a bolt or a nut. This is a commonly used connection technique.
By the way, the method of simply butting the flanges provided at the connection ports of the tubular member formed of metal or other hard material cannot be expected to have high sealing performance between the flanges.

そこで、フランジ間のシール性を高めるために、フランジ同士を突合せた状態で、そのフランジの外周面に沿わせて、該フランジを互いに圧接(接近)させる方向に締め付けるベルトを備え、このベルトを締付け部材によって縮径方向に締め付けることで、フランジ間のシール性を高めるように開発された管接続構造が提案され、知られている(例えば、特許文献1など参照)。   Therefore, in order to improve the sealing performance between the flanges, a belt is provided along the outer peripheral surface of the flanges so that the flanges are pressed against each other along the outer peripheral surface of the flanges. A pipe connection structure developed to enhance the sealing performance between flanges by tightening in the direction of diameter reduction by a member has been proposed and known (for example, see Patent Document 1).

特許第2941687号(段落番号0010、および図1、図2参照)Japanese Patent No. 2941687 (see paragraph No. 0010 and FIGS. 1 and 2)

しかしながら、特許文献1に記載の従来技術では、ベルトによってフランジを互いに圧接する方向(図2の矢印方向)に締め付けるために、フランジとベルトの内側勾配面とのそれぞれの間に、該内側勾配面が滑るように圧接する外側勾配面を有するスペーサリング材をそれぞれ介在する必要があり、現場における接続段取りが面倒で手間が掛かるなどの取扱い性に問題があった。   However, in the prior art described in Patent Document 1, in order to tighten the flanges in the direction in which they are pressed against each other by the belt (in the direction of the arrow in FIG. 2), the inner sloped surface is interposed between the flange and the inner sloped surface of the belt. It is necessary to interpose spacer ring materials having outer sloped surfaces that come into pressure contact with each other so that there is a problem in handling such as troublesome and troublesome connection setup at the site.

また、金属やその他の硬質材料からなるフランジ同士の圧接、つまり、管筒方向(突合せ方向)の圧接のみによってシール性を高めには限りがある。すなわち、面同士の圧接によってシール性を高めるには、広い圧接面を確保することで可能になるが、直管やエルボ管その他の異形管などの管状部材を繋ぎ合わせて気体や液体を流通させる管路を配管設置するために適用される管接続構造においては、狭い空間での管路の配管をも可能にするために、開口縁部からのフランジの外周突出幅(フランジ外周径)にはある程度の制限がある。
そのために、従来技術では、限られたフランジの外周突出幅にてシール性を高めるために、図2に示されているように、フランジの間に弾性ゴムなどからなるシール材(パッキング材)を介在することが必須であるなど、前記のスペーサリング材を含めた現場における組付け部品点数が多く、接続段取りに多くの時間を要するなどの施工性が非常に悪いものであった。
Further, there is a limit to enhancing the sealing performance only by pressure contact between flanges made of metal or other hard material, that is, pressure contact in the tube tube direction (butting direction). That is, in order to improve the sealing performance by press-contacting surfaces, it is possible to secure a wide press-contact surface, but a gas or liquid is circulated by connecting tubular members such as straight pipes, elbow pipes and other deformed pipes. In a pipe connection structure that is applied to install a pipe line, in order to enable pipe piping in a narrow space, the outer peripheral protrusion width (flange outer diameter) of the flange from the opening edge is There are some limitations.
Therefore, in the prior art, as shown in FIG. 2, a sealing material (packing material) made of elastic rubber or the like is provided between the flanges in order to improve the sealing performance with a limited outer peripheral protrusion width of the flange. There are many assembly parts in the field including the spacer ring material, such as the necessity of interposition, and the workability is very poor, such as requiring a lot of time for connection setup.

そこで、本発明は、前記課題を解消するために創案されたものであり、構造がシンプルでありながら、シール材などの介在部材を一切使用することなく、高いシール性にて接続することが可能で、しかも、現場において簡易に施工し得るように改善された新たな管接続方法とその管接続構造を提供することにある。   Therefore, the present invention was created to solve the above-described problems, and can be connected with high sealing performance without using any intervening member such as a sealing material while having a simple structure. In addition, it is an object of the present invention to provide a new pipe connection method and its pipe connection structure which are improved so as to be easily constructed on site.

前記課題を解決するために、本発明では、相互に突合せ接続される管状部材の接続口を圧接させて接続する管接続方法であって、
前記管状部材の前記接続口に、管筒方向と管円周方向とからそれぞれ圧接させる圧接面を有する突合せ接続部をそれぞれ備えて、この突合せ接続部同士を相互に突合せ当接させてその外周面側から締付け部材によって締め付けることで、管筒方向と管円周方向との双方から圧接させることを特徴とする。
In order to solve the above-mentioned problem, in the present invention, a pipe connection method for connecting by connecting the connection ports of tubular members that are butt-connected to each other,
The connection port of the tubular member is provided with a butt connection portion having a pressure contact surface that is pressed against the tube direction and the tube circumferential direction, respectively, and the butt connection portions are brought into butt contact with each other, and the outer peripheral surface thereof. It is characterized by being pressed from both the tube tube direction and the tube circumferential direction by tightening with a tightening member from the side.

このような構成の管接続方法によれば、管状部材の接続口同士を相互に突き合わせた後に、接続口に備えられている突合せ接続部をその外周面側から締付け部材によって締め付けることで、突合せ接続部が管筒方向(管突合せ方向)と管円周方向(管径方向)とのそれぞれの圧接面(管筒方向と管円周方向との双方二面)において圧接される。つまり、締付け部材によって高められた管筒方向の圧接力(シール面圧)と、管円周方向の圧接力(シール面圧)とによって管状部材の接続口間に高いシール性が確保される。   According to the pipe connection method having such a configuration, after connecting the connection ports of the tubular members to each other, the butt connection portion provided in the connection port is tightened from the outer peripheral surface side by the tightening member, so that the butt connection The portions are pressed against each other in pressure contact surfaces (both in the tube tube direction and the tube circumferential direction) in the tube tube direction (tube butt direction) and the tube circumferential direction (tube diameter direction). That is, high sealing performance is ensured between the connection ports of the tubular member by the pressure contact force (seal surface pressure) in the tube tube direction and the pressure contact force (seal surface pressure) in the tube circumferential direction, which are increased by the tightening member.

また、本発明では、相互に突合せ接続される管状部材の接続口にそれぞれ設けられている突合せ接続部を突合せ圧接させて接続する管接続構造であって、
前記接続口のうち、一方の接続口に設けられる前記突合せ接続部は、開口縁部から外周方向に突出させた第1の座面部と、この第1の座面部の外周縁から他方の接続口方向の管筒方向に突出させた第2の座面部とから断面視で略L字形状に形成されている受け口と成し、
他方の接続口に設けられている前記突合せ接続部は、開口縁部から外周方向に突出されて前記第1の座面部に突合せ当接される第1の当接面部と、この第1の当接面部の外周縁から前記第2の座面部と同じ管筒方向に突出されて該第2の座面部の内側に摺接動自在に当接される第2の当接面部とから断面視で略L字形状に形成されている挿し口と成し、
前記受け口に前記挿し口を突合せ内在させ、前記受け口の前記第2の座面部の外周面側から締付け部材によって締め付けて、前記第1の座面部と前記第1の当接面部、前記第2の座面部と前記第2の当接面部をそれぞれ圧接させるように形成されていることを特徴とする。
Moreover, in the present invention, a pipe connection structure for connecting the butt connection portions provided at the connection ports of the tubular members that are butt-connected to each other by butt pressure contact,
Among the connection ports, the butt connection portion provided at one connection port includes a first seat surface portion that protrudes from the opening edge in the outer peripheral direction, and the other connection port from the outer peripheral edge of the first seat surface portion. A receiving port formed in a substantially L shape in a cross-sectional view from the second seating surface portion projected in the direction of the tube of the direction,
The butt connection portion provided in the other connection port includes a first contact surface portion that protrudes in an outer peripheral direction from an opening edge portion and butt-contacts with the first seat surface portion, and the first contact surface portion. In a cross-sectional view, the second contact surface portion protrudes from the outer peripheral edge of the contact surface portion in the same tube direction as the second seat surface portion and is slidably contacted to the inner side of the second seat surface portion. An insertion opening formed in a substantially L shape,
The insertion opening is made to butt inside the receiving opening, and is tightened by a fastening member from the outer peripheral surface side of the second seating face portion of the receiving opening, so that the first seating surface portion, the first contact surface portion, and the second contact surface portion The seat surface portion and the second contact surface portion are formed so as to be in pressure contact with each other.

ここで、前記受け口に前記挿し口を突合せ内在させた状態において、前記第2の当接面部の開放端部が前記第2の座面部の開放端部よりも管筒方向に飛び出すように形成されていることが好適で、さらに、前記締付け部材が、前記受け口の前記第2の座面部の外周面に沿って巻かれるバンドと、このバンドの円周開放端に装備され、該バンドを縮径方向に締め付ける締付け具とから構成され、前記バンド部が、前記受け口の前記第2の座面部の幅寸法かそれ以下の幅寸法にて該第2の座面部の外周面に沿って巻かれる第1の押圧部と、この第1の押圧部の幅方向両端から断面視で略ハの字形状に連設されて内側をテーパ押圧面とする第2の押圧部とから形成されていることが好適なものとなる   Here, in a state where the insertion port is butt-incorporated into the receiving port, the open end portion of the second contact surface portion is formed so as to protrude in the tube direction from the open end portion of the second seat surface portion. Further, the tightening member is equipped with a band wound around the outer peripheral surface of the second seating surface portion of the receiving port, and a circumferential open end of the band, and the band is reduced in diameter. The band portion is wound along the outer peripheral surface of the second seating surface portion with a width dimension of the second seating surface portion of the receiving port or less than the width dimension of the second seating surface portion. 1 is formed from a first pressing portion and a second pressing portion that is connected in a substantially C shape in cross-sectional view from both ends in the width direction of the first pressing portion and has an inner side as a tapered pressing surface. Be suitable

このような構成の管接続構造によれば、相互に突合せ接続される管状部材の受け口側に対し、挿し口側を同軸上に対面させて突合せ内在させ、この突合せ状態で、受け口側の第2の座面部の外周面側から締付け部材によって締め付ける。
このとき、受け口側の第2の座面部の開放端部より管筒方向に飛び出している挿し口側の第2の当接面部の開放端部と、受け口側の第1の座面部と第2の座面部との連設コーナー部とに、締付け部材のバンドの第2の押圧部のテーパ押圧面がそれぞれ摺接動可能に当たり、締付け具によりバンドが縮径方向に締め付けられるに伴い、テーパ押圧面によって挿し口は受け口側へと押圧されて、挿し口側の第1の当接面部が受け口側の第1の座面部に圧接されるとともに、締付け具によるバンドの締付け最終段階において、バンドの第1の押圧部によって受け口側の第2の座面部が挿し口側の第2の当接面部へと押圧されて、受け口側の第2の座面部が挿し口側の第2の押圧部に圧接される。
また、受け口側の第2の座面部及び挿し口側の第2の当接面部のテーパ角度の大きさと、この大きさに対するバンドの第2の押圧部の開放端部から第1の押圧部に至るバンドの高さ(深さ)、そして第2の押圧部のテーパ押圧面のテーパ角度の大きさなどのバンドの大小関係によっては、バンドが締付け具によって締め付けられる最終段階のときに、挿し口側の第2の当接面部が受け口側の第2の座面部に圧接されることとなる。
これにより、受け口と挿し口との管筒方向(管突合せ方向)の第1の座面部と第1の当接面部との間、そして管円周方向(管径方向)の第2の座面部と第2の当接面部との間の圧接力(シール面圧)が締付け具によるバンドの締め付けによって高められ、管状部材の接続口同士が高いシール性にて接続される。
According to the pipe connection structure having such a configuration, the insertion port side is coaxially opposed to the receiving port side of the tubular members that are butt-connected to each other, and the butt is present inside the butt. The seating surface portion is tightened from the outer peripheral surface side by a tightening member.
At this time, the open end portion of the second contact surface portion on the insertion port side protruding from the open end portion of the second seat surface portion on the receiving port side in the tube direction, the first seat surface portion on the receiving port side and the second The taper pressing surface of the second pressing part of the band of the tightening member can be slidably contacted with the corner part continuously provided with the seating surface part of the tightening member, and the taper pressing is performed as the band is tightened in the diameter reducing direction by the tightening tool. The insertion port is pressed toward the receiving side by the surface, the first contact surface portion on the insertion port side is pressed against the first seat surface portion on the receiving port side, and at the final stage of tightening the band by the fastener, The second seating surface portion on the receiving port side is pressed against the second contact surface portion on the insertion port side by the first pressing portion, and the second seating surface portion on the receiving port side is pressed against the second pressing portion on the insertion port side. Press contact.
Further, the taper angle of the second seating surface portion on the receiving port side and the second abutting surface portion on the insertion port side, and the first pressing portion from the open end of the second pressing portion of the band to this size. Depending on the size of the band, such as the height (depth) of the band to be reached and the taper angle of the taper pressing surface of the second pressing part, the insertion port may be inserted at the final stage when the band is tightened by the fastener. The second contact surface portion on the side is pressed against the second seat surface portion on the receiving port side.
Thereby, between the 1st seat surface part and 1st contact surface part of the pipe tube direction (tube butt | matching direction) of a receptacle and an insertion port, and the 2nd seat surface part of a pipe circumferential direction (tube diameter direction) The pressure contact force (seal surface pressure) between the first contact surface portion and the second contact surface portion is increased by tightening the band by the fastener, and the connection ports of the tubular members are connected with high sealing performance.

また、前記の管接続構造において、前記締付け部材による締め付けによって管円周方向に圧接される前記第2の座面部の内側面と、前記第2の当接面部の外側面とがテーパ状に形成されている。つまり、前記受け口に対し前記挿し口を突合せ内在させるときに、その突合せ動作に順次で当接するように、前記第2の座面部の内側面と、前記第2の当接面部の外側面とがテーパ状に形成されていることが好適なものとなる。   Further, in the pipe connection structure, the inner side surface of the second seat surface portion and the outer side surface of the second contact surface portion that are press-contacted in the pipe circumferential direction by tightening by the tightening member are formed in a tapered shape. Has been. That is, when the insertion port is caused to butt against the receiving port, the inner side surface of the second seating surface portion and the outer side surface of the second abutting surface portion are sequentially brought into contact with the butt operation. It is preferable that the taper is formed.

このように構成されている管接続構造によれば、前記のように、受け口に対して挿し口を突合せ内在させるときに、その突合せ作業を簡易に行うことができる。つまり、受け口に挿し口を突合せ内在させる当初の段階では、受け口側の口径が大きく、挿し口側の口径は小さい。これにより、挿し口を受け口に簡易に突合せ内在させることができる。   According to the pipe connection structure configured in this way, as described above, when the insertion port is made to butt against the receiving port, the butt operation can be easily performed. In other words, at the initial stage where the insertion port is made to butt in the receiving port, the diameter on the receiving port side is large and the diameter on the insertion port side is small. Thus, the insertion opening can be easily brought into the butting opening.

本発明の管接続方法によれば、相互に突合せ接続される管状部材の接続口は、接続口に備えられている突合せ接続部と、この突合せ接続部を外周面側から締め付ける締付け部材によって管筒方向(管突合せ方向)と管円周方向(管径方向)とのそれぞれの圧接面において圧接される。
これにより、従来技術のように、シール材などの介在部材を一切使用することなく、簡易な施工によって管状部材の接続口同士を高いシール性にて接続することができる。
According to the pipe connection method of the present invention, the connection ports of the tubular members that are butt-connected to each other include a butt connection portion provided in the connection port, and a tubular member by a tightening member that tightens the butt connection portion from the outer peripheral surface side. It is press-contacted in each pressure-contact surface of a direction (pipe butt direction) and a pipe circumferential direction (pipe diameter direction).
Thereby, the connection port of a tubular member can be connected with high sealing performance by simple construction, without using interposition members, such as a sealing material, like the prior art.

本発明の管接続構造によれば、締付け具によるバンドの縮径方向への締め付けによって、受け口と挿し口との管筒方向の第1の座面部と第1の当接面部との圧接面間、そして管円周方向の第2の座面部と第2の当接面部との圧接面間の圧接力(シール面圧)をそれぞれ高めて、管状部材の接続口同士を高いシール性にて接続することができる。
また、受け口に対して挿し口側を突合せ内在させるとき、その突合せ当初の段階では、受け口側の口径が大きく、挿し口側の口径は小さいことにより、挿し口を受け口に簡易に突合せ内在させることができる。
このように、本発明によれば、従来技術のように、シール材などの介在部材を一切使用することなく、管状部材の接続口同士を、管筒方向と管円周方向とのそれぞれの圧接面の圧接力(シール面圧)によって高いシール性にて接続することができる。しかも、構造がシンプルで簡易に施工することができる管接続構造を提供することができる。
According to the pipe connection structure of the present invention, between the pressure contact surfaces of the first seat surface portion and the first contact surface portion in the tube direction of the receiving port and the insertion port by tightening the band in the diameter reducing direction by the fastener. Further, the pressure contact force (seal surface pressure) between the pressure contact surfaces of the second seat surface portion and the second contact surface portion in the pipe circumferential direction is increased to connect the connection ports of the tubular members with high sealing performance. can do.
In addition, when the insertion port side is made to butt inside the receiving port, at the initial stage of the butt, the diameter on the receiving port side is large and the diameter on the insertion port side is small, so that the insertion port can be easily butt-incorporated in the receiving port. Can do.
As described above, according to the present invention, the connection ports of the tubular members are connected to each other in the tube direction and the tube circumferential direction without using any intervening member such as a sealing material as in the prior art. It is possible to connect with high sealing performance by the surface pressure contact force (seal surface pressure). Moreover, it is possible to provide a pipe connection structure that has a simple structure and can be easily constructed.

本実施形態に係る管接続構造が適用された管状部材の接続形態の一部を破断、省略して示す側面図である。It is a side view which fractures | ruptures and abbreviate | omits and shows a part of connection form of the tubular member to which the pipe connection structure which concerns on this embodiment was applied. 図1のII-II線縦断面図である。It is the II-II longitudinal cross-sectional view of FIG. 受け口側を備えている管状部材の一部を省略して示し、(a)は、斜視図であり、(b)は、同縦断側面図である。Part of the tubular member provided with the receiving port side is omitted and shown, (a) is a perspective view, and (b) is a longitudinal side view of the same. 挿し口側を備えている管状部材の一部を省略して示し、(a)は、斜視図であり、(b)は、同縦断側面図である。A part of the tubular member provided with the insertion port side is omitted and shown, (a) is a perspective view, and (b) is a longitudinal side view of the same. 締付け部材を示す斜視図である。It is a perspective view which shows a clamping member. 受け口と挿し口とを突合せ当接させて締付け部材によって接続するときの状態を示し、(a)は、挿し口を受け口に対して対面させた状態を示す要部の拡大断面図であり、(b)は、挿し口を受け口に突合せ内在させて、受け口側の第2の座面部の外側に沿ってバンドを巻き付けセットする状態を示す要部の拡大断面図である。A state when the receiving port and the insertion port are brought into butt contact with each other and connected by a tightening member is shown, (a) is an enlarged cross-sectional view of the main part showing a state where the insertion port faces the receiving port, b) is an enlarged cross-sectional view of the main part showing a state in which the insertion opening is brought into abutment with the receiving opening and the band is wound and set along the outside of the second seating surface portion on the receiving opening side. 本実施形態に係る管接続構造が適用された管状部材の配管使用の一例を示し、(a)は、換気装置を前側斜め上方から見たときの斜視図であり、(b)は、同正面図である。An example of piping use of the tubular member to which the pipe connection structure concerning this embodiment is applied is shown, (a) is a perspective view when a ventilator is seen from the front side slanting upper part, and (b) is the front. FIG.

以下、本発明の実施形態について、適宜図面を参照しながら詳細に説明する。
本実施形態に係る管接続方法と管接続構造は、金属やその他の硬質材料によって形成されている直管やエルボ管その他の異形管などの管状部材を用いて、気体や液体などを流通させる管路を高いシール性にて配管接続するなどの現場において有効であって、その用途は特に限定されるものではない。つまり、図1に示すように、相互に突合せ接続される接続口3,4を有する管状部材1,2の接続を対象とするものである。
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
The pipe connection method and the pipe connection structure according to the present embodiment are pipes that circulate gas or liquid using a tubular member such as a straight pipe, elbow pipe, or other deformed pipe formed of metal or other hard material. It is effective in the field such as pipe connection with high sealing performance, and its use is not particularly limited. That is, as shown in FIG. 1, it is intended to connect tubular members 1 and 2 having connection ports 3 and 4 that are butt-connected to each other.

図1は、本実施形態に係る管接続方法を実施する管接続構造が適用された管状部材の接続形態の一部を破断、省略して示す側面図であり、図2は、同縦断面図である。
すなわち、本実施形態に係る管接続構造は、図1および図2に示すように、相互に突合せ接続される管状部材1,2の接続口3,4に突合せ接続部5,6をそれぞれ備え、この突合せ接続部5,6同士を突合せ当接させてその外周面側から締付け部材7によって締め付けて、管状部材1,2の管筒方向(管突合せ方向)と管円周方向(管径方向)とのそれぞれの圧接面(管筒方向と管円周方向との双方二面)にて圧接させて、接続口3,4同士を高いシール性にて接続するように構成している。
FIG. 1 is a side view showing a tubular member connecting form to which a pipe connecting structure for carrying out a pipe connecting method according to the present embodiment is applied, with a part thereof broken and omitted, and FIG. 2 is a longitudinal sectional view of the same. It is.
That is, as shown in FIGS. 1 and 2, the pipe connection structure according to the present embodiment includes butt connection portions 5 and 6 in the connection ports 3 and 4 of the tubular members 1 and 2 that are butt-connected to each other, The butt connection portions 5 and 6 are brought into butt contact with each other and tightened by the fastening member 7 from the outer peripheral surface side, so that the tubular direction of the tubular members 1 and 2 (tube butt direction) and the pipe circumferential direction (tube diameter direction). And the pressure contact surfaces (both two surfaces in the tube tube direction and the tube circumferential direction) to connect the connection ports 3 and 4 with high sealing properties.

≪管状部材の構成≫
図3は、受け口側を備えている管状部材を示す斜視図および縦断面図であり、図4は、挿し口側を備えている管状部材を示す斜視図および縦断側面図である。ここでは、図1を適宜参照しながら説明する。
管状部材1,2は、不燃性の材料によって形成されている。例えば、厚さが0.6mm以上のステンレスや亜鉛などかなる鋼板を用いて形成されている。
この管状部材1,2は、例えば、後記の図7に示すように、調理中に発生する汚染空気を吸い込み捕獲するレンジフードなどの換気装置40に備えられている接続排気口41や天井裏に配管されて汚染空気を屋外に排気する排気ダクト50の継手ダクト51或いはキッチン壁(建物の壁部)などに設置されて汚染空気を屋外に排気する図示省略の外部排気口などに嵌め合せ接続される口径にて円筒状に形成されている。
そして、このように形成されている管状部材1,2の突合せ接続される接続口3,4には突合せ接続部5,6がそれぞれ設けられている。
≪Configuration of tubular member≫
FIG. 3 is a perspective view and a longitudinal sectional view showing a tubular member having a receiving port side, and FIG. 4 is a perspective view and a vertical side view showing the tubular member having an insertion port side. Here, description will be made with reference to FIG. 1 as appropriate.
The tubular members 1 and 2 are formed of a nonflammable material. For example, it is formed using a steel plate made of stainless steel or zinc having a thickness of 0.6 mm or more.
For example, as shown in FIG. 7 which will be described later, the tubular members 1 and 2 are connected to a connection exhaust port 41 or a ceiling behind a ventilation device 40 such as a range hood that sucks and captures contaminated air generated during cooking. It is fitted and connected to a joint duct 51 of an exhaust duct 50 that is piped and exhausts contaminated air to the outside or an external exhaust port (not shown) that exhausts contaminated air to the outside by being installed on a kitchen wall (building wall) or the like. It is formed in a cylindrical shape with a certain diameter.
And the butt connection parts 5 and 6 are each provided in the connection ports 3 and 4 by which the tubular members 1 and 2 formed in this way are butt-connected.

≪突合せ接続部の構成≫
突合せ接続部5,6は、図3の(a)および(b)に示す受け口5a側と、図4の(a)および(b)に示す挿し口6a側からなる。
受け口5aは、開口部3の開口縁部から外周方向に突出させた第1の座面部5a−1と、この第1の座面部5a−1の外周縁から図1に示すように、他方の接続口4方向の管筒方向に突出させた第2の座面部5a−2とから断面視で略L字形状に形成されている。
そして、このように形成されている受け口5aの第2の座面部5a−2は、図3の(a)および(b)に示すように、外側に向けて適宜の傾斜角度にてテーパ状に拡開形成されている。
≪Configuration of butt connection part≫
The butt connection portions 5 and 6 include a receiving port 5a side shown in FIGS. 3 (a) and 3 (b) and an insertion port 6a side shown in FIGS. 4 (a) and 4 (b).
The receiving port 5a has a first seat surface portion 5a-1 projecting from the opening edge of the opening portion 3 in the outer peripheral direction, and the other peripheral edge of the first seat surface portion 5a-1 as shown in FIG. It is formed in a substantially L shape in a sectional view from the second seating surface portion 5a-2 projecting in the tube direction of the connection port 4.
And the 2nd bearing surface part 5a-2 of the receiving port 5a formed in this way is taper-shaped at a suitable inclination angle toward the outer side, as shown to (a) and (b) of FIG. Widened and formed.

挿し口6aは、開口部4の開口縁部から外周方向に突出されて第1の座面部5a−1に突合せ当接される第1の当接面部6a−1と、この第1の当接面部6a−1の外周縁から第2の座面部5a−2と同じ管筒方向に突出されて該第2の座面部5a−2の内側に摺接動自在に当接される第2の当接面部6a−2とから断面視で略L字形状に形成されている。
そして、このように形成されている挿し口6aの第2の当接面部6a−2は、図4の(a)および(b)に示すように、受け口5a側の第2の座面部5a−2と略同じ傾斜角度にてテーパ状に拡開形成されている。
これにより、後記の図6の(a)および(b)に示すように、受け口5aに対し、挿し口6aを対面させて突合せ内在(当接)させるときに、その突合せ作業を簡易に行い得るようにしている。
The insertion opening 6a protrudes from the opening edge of the opening 4 in the outer circumferential direction, and the first contact surface portion 6a-1 that abuts against the first seat surface portion 5a-1 and the first contact surface portion 6a-1. A second contact which protrudes from the outer peripheral edge of the surface portion 6a-1 in the same tube direction as the second seat surface portion 5a-2 and is slidably contacted to the inside of the second seat surface portion 5a-2. It is formed in a substantially L shape in cross-sectional view from the contact surface portion 6a-2.
And the 2nd contact surface part 6a-2 of the insertion port 6a formed in this way is 2nd seat surface part 5a- by the side of the receiving port 5a, as shown to (a) and (b) of FIG. 2 is widened in a tapered shape at substantially the same inclination angle as 2.
Thereby, as shown in FIGS. 6A and 6B described later, when the insertion opening 6a faces the receiving opening 5a so as to be in contact (in contact), the matching operation can be easily performed. I am doing so.

≪締付け部材の構成≫
図5は、締付け部材を示す斜視図である。ここでは、図1および図2を適宜参照しながら説明する。
締付け部材7は、図5に示すように、バンド7aと、このバンド7aの円周開放端を接近させる方向側を引き寄せて、該バンド7aを縮径方向に締め付ける締付け具7bとを備えて構成されている。
≪Configuration of tightening member≫
FIG. 5 is a perspective view showing a tightening member. Here, description will be made with reference to FIGS. 1 and 2 as appropriate.
As shown in FIG. 5, the tightening member 7 includes a band 7 a and a tightening tool 7 b that pulls the side of the band 7 a close to the circumferential open end and tightens the band 7 a in the diameter reducing direction. Has been.

バンド7aは、図1および図2に示すように、受け口5a側の第2の座面部5a−2の外側に沿って該第2の座面部5a−2の全周にわたり巻き付けセットされる程度の長さに形成されている。
そして、バンド7aは、受け口5a側の第2の座面部5a−2の幅寸法かそれ以下の幅寸法を有する第1の押圧部7a−1と、この第1の押圧部7a−1の幅方向両端から断面視で略ハの字形状(末広がり形状)に連設されて内側をテーパ押圧面11とする第2の押圧部7a−2とから断面視で略台形形状に形成されている
これにより、後記の図6の(b)に示すように、挿し口6aが突合せ内在された受け口5aの第2の座面部5a−2の外周面側からバンド7aを嵌め合せセットするとき、そのセット作業を速やかに行うことができるようにしている。
また、セットされたバンド7aを締付け具7bによって締め付けたときに、図1の拡大図および図6の(b)に示すように、第2の座面部5a−2の開放端部より管筒方向に飛び出している挿し口6a側の第2の当接面部6a−2の開放端部12に摺接動自在に当たるテーパ押圧面11によって挿し口5aが受け口5a側に押圧される。これにより、受け口5aの第1の座面部5a−1と挿し口6aの第1の座面部6a−1との間の圧接力(シール面圧)を高め、より一層高いシール性を受け口5aと挿し口6aとの間に付与し得るようにしている。
As shown in FIGS. 1 and 2, the band 7a is wound and set around the entire circumference of the second seat surface portion 5a-2 along the outside of the second seat surface portion 5a-2 on the receiving port 5a side. It is formed in length.
The band 7a includes a first pressing part 7a-1 having a width dimension equal to or smaller than the width of the second seating surface part 5a-2 on the receiving port 5a side, and the width of the first pressing part 7a-1. It is formed in a substantially trapezoidal shape in a sectional view from a second pressing portion 7a-2 that is provided in a substantially C shape (a divergent shape) in a sectional view from both ends in the direction and has an inner side as a tapered pressing surface 11. Thus, as shown in FIG. 6B described later, when the band 7a is fitted and set from the outer peripheral surface side of the second seat surface portion 5a-2 of the receiving port 5a in which the insertion port 6a is abutted, the set The work can be done promptly.
Further, when the set band 7a is tightened by the fastener 7b, as shown in the enlarged view of FIG. 1 and FIG. 6B, the tube end direction from the open end of the second seat surface portion 5a-2. The insertion port 5a is pressed to the receiving port 5a side by the taper pressing surface 11 that slidably contacts the open end 12 of the second contact surface portion 6a-2 on the insertion port 6a side protruding to the side. Thereby, the press contact force (seal surface pressure) between the 1st seat surface part 5a-1 of the receiving port 5a and the 1st seat surface part 6a-1 of the insertion port 6a is improved, and the receiving port 5a with much higher sealing performance. It can be applied between the insertion opening 6a.

そして、このバンド7aの両端開放側には、図2および図5に示すように、締付け具7bを構成する略L字形状の連繋部材13が溶接やその他の固着手段によってそれぞれ備えられており、この連繋部材13の間にわたり締付けボルト14が貫通状にねじ込み装着されている。   Then, on both ends open side of the band 7a, as shown in FIGS. 2 and 5, a substantially L-shaped connecting member 13 constituting the fastening tool 7b is provided by welding or other fixing means, respectively. A fastening bolt 14 is screwed and attached between the connecting members 13.

締付けボルト14は、頭部14aと、連繋部材13間にわたるネジ部14bとから形成されている。頭部14aの周面にはローレットなどからなる滑り止めが施されており、また、頭部14aの端面には図示省略の六角レンチ用の係止凹部やドライバ用の十字溝などが設けられている。   The tightening bolt 14 is formed of a head portion 14 a and a screw portion 14 b extending between the connecting members 13. The peripheral surface of the head portion 14a is provided with anti-slip material such as knurls, and the end surface of the head portion 14a is provided with a hexagonal wrench locking recess (not shown) or a cross groove for a driver. Yes.

[管接続方法の説明]
つぎに、以上のように構成されている管接続構造による管状部材1の管接続方法について説明する。
図6は、受け口と挿し口とを突合せ当接させて締付け部材をセットするときの状態を示す要部の拡大断面図である。ここでは、図1および図2を適宜参照しながら説明する。
まず、図6の(a)および(b)に示すように、受け口5aと挿し口6aとを対面させ、挿し口6aを受け口5aに対して突合せ内在させる。
このとき、受け口5a側の第2の座面部5a−2と挿し口6a側の第2の当接面部6a−2とが外側に拡開されたテーパ状であることで、受け口5aに挿し口6aを突合せ内在させる当初の段階(受け口5aの入口側)では、図6の(a)に示すように、受け口5a側の口径が大きく、挿し口6a側の口径は小さい。これにより、挿し口6aを受け口5aに簡易に突合せ内在させることができる。
[Description of pipe connection method]
Next, a pipe connection method of the tubular member 1 using the pipe connection structure configured as described above will be described.
FIG. 6 is an enlarged cross-sectional view of the main part showing a state when the fastening member is set by abutting and contacting the receiving port and the insertion port. Here, description will be made with reference to FIGS. 1 and 2 as appropriate.
First, as shown to (a) and (b) of FIG. 6, the receiving port 5a and the insertion port 6a are made to face, and the insertion port 6a is made to abut against the receiving port 5a.
At this time, the second seating surface portion 5a-2 on the receiving port 5a side and the second abutting surface portion 6a-2 on the inserting port 6a side have a taper shape that is expanded outward, so that the inserting port is inserted into the receiving port 5a. At the initial stage of bringing 6a into butt (the inlet side of the receiving port 5a), as shown in FIG. 6 (a), the diameter on the receiving port 5a side is large, and the diameter on the insertion port 6a side is small. Thereby, the insertion opening 6a can be easily made to butt in the receiving opening 5a.

つぎに、図6の(b)に示すように、受け口5aの第2の座面部5a−2の外側面側からバンド7aを、該第2の座面部5a−2の外側に沿って巻き付け、締付けボルト14を回し、バンド7aを縮径方向に締め付けることで、図1および図2に示すように、受け口5aと挿し口6aとを接続することができる。
このとき、図6の(b)に示すように、受け口5a側の第2の座面部5a−2の開放端部15より管筒方向に飛び出している挿し口6a側の第2の当接面部6a−2の開放端部12と、受け口5a側の第1の座面部5a−1と第2の座面部5a−2との連設コーナー部16とに、図1の拡大図に示すように、バンド7aの第2の押圧部7a−2のテーパ押圧面11がそれぞれ摺接動可能に当たり、締付けボルト14によりバンド7aが縮径方向に締め付けられるに伴い、テーパ押圧面11によって挿し口6a側は受け口5a側へと押圧されて、挿し口6a側の第1の当接面部6a−1が受け口5a側の第1の座面部5a−1に圧接されるとともに、締付けボルト14によるバンド7aの締付け最終段階において、バンド7aの第1の押圧部7a−1によって受け口5a側の第2の座面部5a−2が挿し口6a側の第2の当接面部6a−2へと押圧されて、第2の座面部5a−2が第2の当接面部6a−2に圧接される。
また、このとき、受け口5a側の第2の座面部5a−2及び挿し口6a側の第2の当接面部6a−2のテーパ角度の大きさと、この大きさに対するバンド7aの第2の押圧部7a−2の開放端部から第1の押圧部7a−1に至るバンドの高さ(深さ)、そして第2の押圧部7a−2のテーパ押圧面11のテーパ角度の大きさなどのバンド7の大小関係によっては、バンド7aが締付けボルト14によって縮径方向に締め付けられたときに、挿し口6a側の第2の当接面部6a−2が受け口5a側の第2の座面部5a−2に良好に圧接されることとなる。
これにより、管筒方向の第1の座面部5a−1と第1の当接面部6a−1との圧接面間、そして管円周方向の第2の座面部5a−2と第2の当接面部6a−2との圧接面間のそれぞれの圧接力(シール面圧)が高められて受け口5aと挿し口6aとが高いシール性にて接続される。
Next, as shown in FIG. 6B, the band 7a is wound from the outer surface side of the second seat surface portion 5a-2 of the receiving port 5a along the outer side of the second seat surface portion 5a-2. By turning the tightening bolt 14 and tightening the band 7a in the direction of diameter reduction, the receiving port 5a and the insertion port 6a can be connected as shown in FIGS.
At this time, as shown in FIG. 6B, the second contact surface portion on the insertion port 6a side that protrudes from the open end 15 of the second seat surface portion 5a-2 on the reception port 5a side in the tube direction. As shown in the enlarged view of FIG. 1, the open end 12 of 6a-2 and the continuous corner 16 of the first seating surface 5a-1 and the second seating surface 5a-2 on the receiving port 5a side. The taper pressing surface 11 of the second pressing portion 7a-2 of the band 7a is slidably movable, and as the band 7a is tightened in the direction of diameter reduction by the tightening bolt 14, the taper pressing surface 11 causes the insertion port 6a side. Is pressed to the receiving port 5a side, the first contact surface portion 6a-1 on the insertion port 6a side is pressed against the first seat surface portion 5a-1 on the receiving port 5a side, and the band 7a is tightened by the tightening bolt 14. In the final tightening stage, the first pressing portion 7 of the band 7a -1 causes the second seating surface portion 5a-2 on the receiving port 5a side to be pressed against the second contact surface portion 6a-2 on the insertion port 6a side, so that the second seating surface portion 5a-2 is second contacted. It is press-contacted to the surface part 6a-2.
At this time, the taper angle of the second seat surface portion 5a-2 on the receiving port 5a side and the second contact surface portion 6a-2 on the insertion port 6a side and the second pressing of the band 7a against this size The height (depth) of the band from the open end of the portion 7a-2 to the first pressing portion 7a-1, the size of the taper angle of the tapered pressing surface 11 of the second pressing portion 7a-2, etc. Depending on the size relationship of the band 7, when the band 7a is tightened in the direction of diameter reduction by the tightening bolt 14, the second contact surface portion 6a-2 on the insertion port 6a side becomes the second seat surface portion 5a on the receiving port 5a side. -2 will be in good pressure contact.
As a result, between the pressure contact surfaces of the first seat surface portion 5a-1 and the first contact surface portion 6a-1 in the tube tube direction, and between the second seat surface portion 5a-2 in the tube circumferential direction and the second contact surface portion. The pressure contact force (seal surface pressure) between the pressure contact surfaces with the contact surface portion 6a-2 is increased, and the receiving port 5a and the insertion port 6a are connected with high sealing performance.

図7は、本実施形態に係る管接続構造が適用された管状部材の配管使用の一例を示す斜視図および同正面図である。ここでは、図1を適宜参照しながら説明する。
この配管使用の一例では、図1および図7に示すように、管接続構造にて接続される受け口5aと挿し口6aとを有する管一端側と、換気装置40側の接続排気口41、そして天井裏からキッチン天井Kを貫通してキッチン(室内)の配管臨む排気ダクト50に継手ダクト51を介して接続される管他端側とが芯ズレしている異形管からなる2本の管状部材1,2を用いて、換気装置40の接続排気口41と天井裏の排気ダクト50とを繋ぐ配管について説明する。
FIG. 7 is a perspective view and a front view showing an example of pipe use of a tubular member to which the pipe connection structure according to this embodiment is applied. Here, description will be made with reference to FIG. 1 as appropriate.
In an example of the use of this pipe, as shown in FIGS. 1 and 7, one end side of a pipe having a receiving port 5a and an insertion port 6a connected in a pipe connection structure, a connection exhaust port 41 on the ventilation device 40 side, and Two tubular members made of deformed pipes that are misaligned with the other end of the pipe that is connected to the exhaust duct 50 that passes through the kitchen ceiling K from the back of the ceiling and faces the pipe in the kitchen (indoor) via the joint duct 51. The piping which connects the connection exhaust port 41 of the ventilation apparatus 40 and the exhaust duct 50 on the back of the ceiling will be described with reference to FIGS.

まず、前記の実施形態のように、管状部材1,2の受け口5aと挿し口6aとを相互に突合せ当接させてバンド7aをセットして締付けボルト14によりバンド7aを縮径方向へ締め付けて管状部材1,2の受け口5a側と挿し口6a側を接続する。このとき、管状部材1,2が管円周方向に回転し得るように締付けボルト14によるバンド7aの締め付け状態を仮止め状態として、管状部材1の他端側を換気装置40側の接続排気口41に嵌め合せ接続する。   First, as in the above-described embodiment, the receiving port 5a and the insertion port 6a of the tubular members 1 and 2 are brought into butt contact with each other, the band 7a is set, and the band 7a is tightened in the reduced diameter direction by the tightening bolt 14. The receiving port 5a side and the insertion port 6a side of the tubular members 1 and 2 are connected. At this time, the fastening state of the band 7a by the fastening bolt 14 is temporarily set so that the tubular members 1 and 2 can rotate in the pipe circumferential direction, and the other end side of the tubular member 1 is connected to the ventilator 40 side connection exhaust port. 41 to fit and connect.

つぎに、管状部材1側に対して回転可能に接続されている管状部材2側を回転させて該環状部材2の他端側軸芯(偏心管軸)を、キッチン天井Kからキッチンに臨む排気ダクト50の開口軸芯に同軸上に位置させる芯合わせ調整を行う。このとき、換気装置40の接続排気口41に接続されている環状部材1側を必要に応じて回転させる。これにより、換気装置40の接続排気口41とキッチン天井Kから臨む排気ダクト50の開口部との接続方向の芯ズレに対する方向調整作業を円滑に行うことができる。
このようにして、環状部材2の他端側軸芯と排気ダクト50の開口軸芯との芯合わせを行った後に、継手ダクト51を環状部材2の他端側と排気ダクト50の開口部とにわたり嵌め合せ接続するとともに、仮止め状態のバンド7aを締付けボルト14により本締めする。
これにより、図7に示すように、換気装置40の接続排気口41とキッチン天井Kから臨む排気ダクト50の開口部との接続方向の芯ズレに対応させた方向調整によって接続排気口41と排気ダクト50とを簡易に配管接続することができる。
Next, the tubular member 2 side rotatably connected to the tubular member 1 side is rotated so that the other end side axial core (eccentric tube shaft) of the annular member 2 is exhausted from the kitchen ceiling K to the kitchen. Centering adjustment is performed so as to be positioned coaxially with the opening axis of the duct 50. At this time, the annular member 1 side connected to the connection exhaust port 41 of the ventilation device 40 is rotated as necessary. Thereby, the direction adjustment operation | work with respect to the core shift | offset | difference of the connection direction of the connection exhaust port 41 of the ventilation apparatus 40 and the opening part of the exhaust duct 50 which faces the kitchen ceiling K can be performed smoothly.
In this way, after aligning the other end side axis of the annular member 2 and the opening axis of the exhaust duct 50, the joint duct 51 is connected to the other end side of the annular member 2 and the opening of the exhaust duct 50. The band 7a in the temporarily fixed state is finally tightened with the tightening bolts 14 while being fitted and connected.
Accordingly, as shown in FIG. 7, the connection exhaust port 41 and the exhaust gas are adjusted by the direction adjustment corresponding to the misalignment of the connection direction between the connection exhaust port 41 of the ventilation device 40 and the opening of the exhaust duct 50 facing the kitchen ceiling K. The duct 50 can be easily connected by piping.

なお、本発明の実施形態の具体的な構成は、前記した実施形態に限られるものではなく、請求項1から請求項5に記載の本発明の要旨を逸脱しない範囲で設計変更などがあっても本発明に含まれるものである。
例えば、バンド7aの締付け具7bとして、バンド7aの開放一端側に、複数の掛止溝を長手方向に並設し、バンド7aの開放他端側にはてこの原理でバンド7aの締付け方向に閉じられる操作部と、この操作部に備えられて前記掛止溝のいずれかに係脱自在に掛けられる締付け環とを有する締め金具とから構成することができる。また、バンド7aの開放一端側に枢着された締付け環を、解放他端側に枢着される締め金具に設けられている複数の掛止溝のいずれかに係脱自在に掛止させて、締め金具をバンド7aの締付け方向に閉じる(倒す)構成とすることができる。
The specific configuration of the embodiment of the present invention is not limited to the above-described embodiment, and there are design changes and the like without departing from the gist of the present invention described in claims 1 to 5. Are also included in the present invention.
For example, as a fastener 7b of the band 7a, a plurality of latching grooves are arranged in the longitudinal direction on one open end side of the band 7a, and on the other open end side of the band 7a in the tightening direction of the band 7a according to the lever principle. It can be comprised from the fastener which has the operation part closed and the clamp ring with which this operation part was equipped, and it was detachably hooked in either of the said latching grooves. Further, the fastening ring pivotally attached to the open one end side of the band 7a is detachably engaged with any one of a plurality of retaining grooves provided in a fastening metal fitting pivotally attached to the other open end side. The fastener can be closed (turned down) in the fastening direction of the band 7a.

また、受け口5a側の第2の座面部5a−2および挿し口6a側の第2の当接面部6a−2の一方または双方に対して、1乃至円周方向数ヶ所に略V字形状などの切れ目(スリット)を設けことができる。これにより、締付けボルト14によってバンド7aが縮径方向に締め付けれ、バンド7aの第1の押圧部7a−1によって押圧されたとき、互いに同じ方向に拡開するテーパ状の第2の座面部5a−1と第2の当接面部6a−2とが良好に圧接されることとなる。   Further, with respect to one or both of the second seating surface portion 5a-2 on the receiving port 5a side and the second abutting surface portion 6a-2 on the insertion port 6a side, substantially V-shaped or the like at one to several circumferential directions. A slit (slit) can be provided. Thereby, when the band 7a is tightened in the diameter reducing direction by the tightening bolt 14, and is pressed by the first pressing portion 7a-1 of the band 7a, the tapered second seat surface portion 5a that expands in the same direction. -1 and the second contact surface portion 6a-2 are in good pressure contact.

1,2 管状部材
3,4 接続口
5,6 突合せ接続部
5a 受け口
5a−1 第1の座面部
5a−2 第2の座面部
6a 挿し口
6a−1 第1の当接面部
6a−2 第2の当接面部
7 締付け部材
7a バンド
7b 締付け具
11 テーパ押圧面
12,15 開放端部
16 連設コーナー部
DESCRIPTION OF SYMBOLS 1, 2 Tubular member 3, 4 Connection port 5,6 Butt connection part 5a Receiving port 5a-1 1st seat surface part 5a-2 2nd seat surface part 6a Insertion port 6a-1 1st contact surface part 6a-2 1st 2 abutting surface portion 7 tightening member 7a band 7b tightening tool 11 taper pressing surface 12, 15 open end portion 16 continuous corner portion

Claims (5)

相互に突合せ接続される管状部材の接続口を圧接させて接続する管接続方法であって、
前記管状部材の前記接続口に、管筒方向と管円周方向とからそれぞれ圧接される圧接面を有する突合せ接続部をそれぞれ備えて、この突合せ接続部同士を相互に突合せ当接させてその外周面側から締付け部材によって締め付けることで、管筒方向と管円周方向との双方から圧接させることを特徴とする管接続方法。
A pipe connection method for connecting the connection ports of tubular members that are butt-connected to each other by pressure contact,
The connection port of the tubular member is provided with a butt connection portion having a pressure contact surface pressed from the tube direction and the tube circumferential direction, respectively, and the butt connection portions are brought into butt contact with each other. A pipe connection method characterized in that the pipe is pressed from both the tube cylinder direction and the pipe circumferential direction by tightening with a fastening member from the surface side.
相互に突合せ接続される管状部材の接続口にそれぞれ設けられている突合せ接続部を突合せ圧接させて密接状に接続する管接続構造であって、
前記接続口のうち、一方の接続口に設けられる前記突合せ接続部は、開口縁部から外周方向に突出させた第1の座面部と、この第1の座面部の外周縁から他方の接続口方向の管筒方向に突出させた第2の座面部と、から断面視で略L字形状に形成されている受け口と成し、
他方の接続口に設けられている前記突合せ接続部は、開口縁部から外周方向に突出されて前記第1の座面部に突合せ圧接される第1の当接面部と、この第1の当接面部の外周縁から前記第2の座面部と同じ管筒方向に突出されて該第2の座面部の内側に摺接動自在に当接される第2の当接面部と、から断面視で略L字形状に形成されている挿し口と成し、
前記受け口に前記挿し口を突合せ内在させ、前記受け口の前記第2の座面部の外周面側から締付け部材によって締め付けて、前記第1の座面部と前記第1の当接面部、前記第2の座面部と前記第2の当接面部をそれぞれ圧接させるように形成されていることを特徴とする管接続構造。
A pipe connection structure in which butt connection portions respectively provided at connection ports of tubular members to be butt connected to each other are brought into close contact with each other by butt pressure contact,
Among the connection ports, the butt connection portion provided in one connection port includes a first seat surface portion projecting from the opening edge portion in the outer peripheral direction, and the other connection port from the outer peripheral edge of the first seat surface portion. A second seating surface portion projecting in the direction of the tube, and a receiving port formed in a substantially L shape in cross-sectional view,
The butt connection portion provided in the other connection port includes a first contact surface portion that protrudes in an outer peripheral direction from an opening edge portion and is butt-contacted with the first seat surface portion, and the first contact surface portion. In a cross-sectional view, the second contact surface portion protrudes from the outer peripheral edge of the surface portion in the same tube direction as the second seat surface portion and is slidably contacted to the inner side of the second seat surface portion. An insertion opening formed in a substantially L shape,
The insertion opening is caused to butt inside the receiving opening, and is tightened by a fastening member from the outer peripheral surface side of the second seating face portion of the receiving opening, so that the first seating surface portion, the first contact surface portion, and the second contact surface portion A pipe connection structure, wherein the seat surface portion and the second abutting surface portion are formed in pressure contact with each other.
前記受け口に前記挿し口を突合せ内在させた状態において、前記第2の当接面部の開放端部が前記第2の座面部の開放端部よりも管筒方向に飛び出すように形成されていることを特徴とする請求項2に記載の管接続構造。   The open end of the second contact surface portion is formed so as to protrude in the tube direction from the open end portion of the second seat surface portion in a state where the insertion port is in contact with the receiving port. The pipe connection structure according to claim 2. 前記締付け部材は、前記受け口の前記第2の座面部の外周面に沿って巻かれるバンドと、このバンドの円周開放端に装着されて、該バンドを縮径方向に締め付ける締付け具と、から構成され、
前記バンドが、前記第2の座面部の幅寸法かそれ以下の幅寸法にて該第2の座面部の外周面に沿って巻かれる第1の押圧部と、この第1の押圧部の幅方向両端から断面視で略ハの字形状に連設されて内側をテーパ押圧面とする第2の押圧部と、から形成されていることを特徴とする請求項2または請求項3に記載の管接続構造。
The tightening member includes: a band wound along the outer peripheral surface of the second seating surface portion of the receptacle; and a tightening tool that is attached to a circumferentially open end of the band and tightens the band in a diameter reducing direction. Configured,
A first pressing portion in which the band is wound along an outer peripheral surface of the second seating surface portion with a width dimension of the second seating surface portion or less, and a width of the first pressing portion; 4. The second pressing portion according to claim 2 or 3, wherein the second pressing portion is formed in a substantially C shape in a cross-sectional view from both ends in the direction and has a tapered pressing surface on the inside. Pipe connection structure.
前記締付け部材による締め付けによって管円周方向に圧接される前記第2の座面部の内側面と、前記第2の当接面部の外側面とがテーパ状に形成されていることを特徴とする請求項2から請求項4のいずれかに記載の管接続構造。   The inner surface of the second seating surface portion pressed in the circumferential direction of the tube by the tightening by the tightening member and the outer surface of the second contact surface portion are formed in a tapered shape. The pipe connection structure according to any one of claims 2 to 4.
JP2009125149A 2009-05-25 2009-05-25 Pipe connecting method and pipe connecting structure for the same Pending JP2010270880A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109780346A (en) * 2019-02-19 2019-05-21 深圳市医护宝智能科技有限公司 Connector

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JPS61106323U (en) * 1984-12-14 1986-07-05
JPH045422A (en) * 1990-04-20 1992-01-09 Calsonic Corp Connection part construction and its connecting method for pipe body
JPH07310873A (en) * 1994-05-16 1995-11-28 Futaba Sangyo Kk Joint structure for pipe
JPH10132365A (en) * 1996-09-27 1998-05-22 Tubest Sa Device for sealed butt joint of two metal pipes
JPH10252962A (en) * 1997-03-07 1998-09-22 Kiyoshi Ogawa Flanged joint, and piping flange connection structure using it
JP2006077876A (en) * 2004-09-09 2006-03-23 Honda Motor Co Ltd Pipe connection structure
JP2009047395A (en) * 2007-08-23 2009-03-05 Shimadzu Corp Heat exchanger for aircraft

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Publication number Priority date Publication date Assignee Title
JPS61106323U (en) * 1984-12-14 1986-07-05
JPH045422A (en) * 1990-04-20 1992-01-09 Calsonic Corp Connection part construction and its connecting method for pipe body
JPH07310873A (en) * 1994-05-16 1995-11-28 Futaba Sangyo Kk Joint structure for pipe
JPH10132365A (en) * 1996-09-27 1998-05-22 Tubest Sa Device for sealed butt joint of two metal pipes
JPH10252962A (en) * 1997-03-07 1998-09-22 Kiyoshi Ogawa Flanged joint, and piping flange connection structure using it
JP2006077876A (en) * 2004-09-09 2006-03-23 Honda Motor Co Ltd Pipe connection structure
JP2009047395A (en) * 2007-08-23 2009-03-05 Shimadzu Corp Heat exchanger for aircraft

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