JPH07158782A - Piping and connecting method of piping - Google Patents
Piping and connecting method of pipingInfo
- Publication number
- JPH07158782A JPH07158782A JP31047293A JP31047293A JPH07158782A JP H07158782 A JPH07158782 A JP H07158782A JP 31047293 A JP31047293 A JP 31047293A JP 31047293 A JP31047293 A JP 31047293A JP H07158782 A JPH07158782 A JP H07158782A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- cap nut
- bulging portion
- piping
- diameter
- 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.)
- Pending
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
- F16L19/04—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 using additional rigid rings, sealing directly on at least one pipe end, which is flared either before or during the making of the connection
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Joints With Pressure Members (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は配管及び配管の連結方法
に係り、特に、袋ナットを用いて異径配管を連結する場
合、その連結強度の向上に有効な配管及びそれを用いた
連結方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe and a pipe connecting method, and more particularly, to a pipe having a different diameter when a cap nut is used to connect the pipes and a connecting method using the pipe. Regarding
【0002】[0002]
【従来の技術】従来の異径配管の連結方法を図3に示
す。連結端側の外周面に雄ネジ11aが設けられた、径
の大きい配管(以下「大径配管」と称す。)11と、径
の小さい配管(以下「小径配管」と称す。)12と、袋
ナット13と、環状ゴムパッキン14とを用いる。ま
ず、小径配管12に袋ナット13とゴムパッキン14と
を嵌めておき、大径配管11内に小径配管12の端部を
挿入する。次いで、袋ナット13を雄ネジ11aにねじ
込む。袋ナット13を強くねじ込むと、ゴムパッキン1
4が押圧されて変形することにより生じる締付力で、大
径配管11と小径配管12とが水密(ないし気密)性良
く連結固定される。2. Description of the Related Art FIG. 3 shows a conventional method for connecting different diameter pipes. A large-diameter pipe (hereinafter referred to as "large-diameter pipe") 11 having a male screw 11a on the outer peripheral surface on the connecting end side, and a small-diameter pipe (hereinafter referred to as "small-diameter pipe") 12; The cap nut 13 and the annular rubber packing 14 are used. First, the cap nut 13 and the rubber packing 14 are fitted into the small diameter pipe 12, and the end of the small diameter pipe 12 is inserted into the large diameter pipe 11. Next, the cap nut 13 is screwed into the male screw 11a. When the cap nut 13 is strongly screwed in, the rubber packing 1
The large-diameter pipe 11 and the small-diameter pipe 12 are connected and fixed with good watertightness (or airtightness) by the tightening force generated by pressing and deforming 4.
【0003】[0003]
【発明が解決しようとする課題】上記従来の配管の連結
方法によれば、大径配管と小径配管とを水密(ないし気
密)性良く連結することはできるが、連結強度の面では
十分に高いとは言えない。即ち、大径配管と小径配管と
を離反方向に強く引っ張る力に対しては連結強度が十分
ではなく、配管がはずれてしまう場合がある。According to the above-described conventional pipe connecting method, the large diameter pipe and the small diameter pipe can be connected with good watertightness (or airtightness), but the connection strength is sufficiently high. It can not be said. That is, the connection strength is not sufficient with respect to the force that strongly pulls the large diameter pipe and the small diameter pipe in the separating direction, and the pipe may come off.
【0004】本発明は上記従来の問題点を解決し、異径
配管を容易かつ強固に連結することができる配管及びそ
れを用いた連結方法を提供することを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned conventional problems and to provide a pipe capable of easily and firmly connecting different diameter pipes and a connecting method using the pipe.
【0005】[0005]
【課題を解決するための手段】請求項1の配管は、一端
部の近傍に、外方に膨出した且つ配管の長手方向に伸縮
可能な膨出部が周設されてなることを特徴とする。According to a first aspect of the present invention, there is provided a pipe having a bulging portion, which bulges outward and is expandable / contractible in a longitudinal direction of the pipe, in the vicinity of one end. To do.
【0006】請求項2の配管の連結方法は、端部の外周
に雄ネジが設けられた筒体に請求項1の配管の一端部を
差し込み、袋ナットの後端縁を前記膨出部に係止させな
がら該雄ネジにねじ込み、該袋ナットの後端縁と前記筒
体の先端面との間で該膨出部を挟み付けて該配管を該筒
体に連結するようにした配管の連結方法であって、前記
配管を前記筒体に差し込むのに先立って、前記配管を長
手方向に引っ張ることにより前記膨出部を縮径させ、こ
の状態で袋ナットを該配管の一端側から挿入し、且つ該
膨出部の部分を通過させ、その後、該配管を長手方向に
押圧して該膨出部を拡径させ、袋ナットの後端縁が該膨
出部に係合しうるようにしたことを特徴とする。According to a second aspect of the present invention, there is provided a method for connecting pipes, wherein one end of the pipe of claim 1 is inserted into a cylindrical body having an external thread on the outer periphery of the end, and the rear end edge of the cap nut is set to the bulging portion. Of the pipe which is screwed into the male screw while being locked, and the bulging portion is sandwiched between the rear end edge of the cap nut and the front end surface of the tubular body to connect the pipe to the tubular body. A connecting method, in which the bulging portion is contracted by pulling the pipe in a longitudinal direction prior to inserting the pipe into the tubular body, and in this state, a cap nut is inserted from one end side of the pipe. And passing through the bulging portion, and then pressing the pipe in the longitudinal direction to expand the bulging portion so that the rear end edge of the cap nut can engage with the bulging portion. It is characterized by having done.
【0007】[0007]
【作用】本発明の配管は、一端部(連結端部)の近傍に
外方に膨出する膨出部が周設されている。このため、端
部の外周に雄ネジが設けられた筒体に本発明の配管の一
端(連結端)部を差し込み、袋ナットの後端縁をその膨
出部に係止させながら筒体の雄ネジにねじ込み、袋ナッ
トの後端縁と筒体の先端面との間で配管の膨出部を挟み
付けることにより、配管を筒体に強固に連結することが
できる。この連結構造において、袋ナットは筒体とねじ
込みにより固定されている上に、配管は膨出部により袋
ナットに係止されているため、筒体と配管とは離反方向
に対する力にも十分な連結強度を示し、配管がはずれる
ことは殆どない。In the pipe of the present invention, a bulging portion that bulges outward is provided in the vicinity of one end (connecting end). For this reason, one end (connecting end) of the pipe of the present invention is inserted into a tubular body provided with a male screw on the outer periphery of the end, and the rear end edge of the cap nut is locked to the bulging portion of the tubular body. The pipe can be firmly connected to the tubular body by being screwed into the male screw and sandwiching the bulging portion of the pipe between the rear end edge of the cap nut and the tip surface of the tubular body. In this connection structure, since the cap nut is fixed to the tubular body by screwing and the pipe is locked to the cap nut by the bulging portion, the tubular body and the pipe have sufficient force in the separating direction. It shows the connection strength, and the pipe is hardly detached.
【0008】しかも、本発明の配管の膨出部は、配管の
長手方向に伸縮可能である。このため、この配管を長手
方向に引っ張ることにより膨出部を縮径させることがで
き、この膨出部を縮径させた状態で袋ナットをこの配管
の連結端側から容易に挿入することができる。そして、
袋ナットを膨出部の部分を通過させた後は、配管を長手
方向に押圧することにより膨出部を拡径させることがで
き、この拡径させた膨出部に袋ナットの後端縁を確実に
係合させることができる。Moreover, the bulging portion of the pipe of the present invention can be expanded and contracted in the longitudinal direction of the pipe. Therefore, it is possible to reduce the diameter of the bulging portion by pulling the pipe in the longitudinal direction, and it is possible to easily insert the cap nut from the connecting end side of the pipe in a state where the bulging portion is reduced in diameter. it can. And
After passing the cap nut through the bulging part, the bulging part can be expanded by pressing the pipe in the longitudinal direction. Can be securely engaged.
【0009】[0009]
【実施例】以下図面を参照して本発明を詳細に説明す
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings.
【0010】図1は本発明の配管の一実施例を示す断面
図、図2は本発明の配管による連結構造の一実施例を示
す断面図である。FIG. 1 is a sectional view showing an embodiment of the pipe of the present invention, and FIG. 2 is a sectional view showing an embodiment of a connecting structure by the pipe of the present invention.
【0011】図1に示す如く、本発明の配管1は、その
連結端部1Aの近傍に、外方に膨出した膨出部2が周設
されている。この膨出部2は配管1の長手方向に伸縮可
能であり、図1(b)に示す如く、配管1を長手方向に
引っ張ることにより膨出部2を縮径させることができ、
逆に、図1(c)に示す如く、配管1を長手方向に押圧
することにより膨出部2を拡径させることができる。即
ち、図1において、各状態の膨出部2の径A,B,C
は、B<A<Cの関係にある。As shown in FIG. 1, the pipe 1 of the present invention is provided with a bulging portion 2 which bulges outward in the vicinity of the connecting end portion 1A thereof. The bulging portion 2 is expandable / contractible in the longitudinal direction of the pipe 1, and as shown in FIG. 1B, the bulging portion 2 can be contracted by pulling the pipe 1 in the longitudinal direction.
On the contrary, as shown in FIG. 1C, the bulging portion 2 can be expanded in diameter by pressing the pipe 1 in the longitudinal direction. That is, in FIG. 1, the diameters A, B, C of the bulging portion 2 in each state are shown.
Are in the relationship of B <A <C.
【0012】このような本発明の配管は、例えば、合成
樹脂のブロー成形により膨出部を形成することにより容
易に製造することができる。Such a pipe of the present invention can be easily manufactured, for example, by forming the bulging portion by blow molding of synthetic resin.
【0013】なお、膨出部の形状位置は配管の連結端部
の近傍であれば良く、特に制限はない。また、膨出部の
大きさ(配管からの膨出幅)や肉厚、形状等についても
特に制限はなく、配管の連結に用いる袋ナットの大きさ
や配管の大きさ、形状等に応じて適宜決定される。The shape of the bulging portion is not particularly limited as long as it is near the connecting end of the pipe. In addition, the size (bulging width from the pipe), wall thickness, shape, etc. of the bulging portion is not particularly limited, and may be appropriately set according to the size of the cap nut used for connecting the pipes, the size, the shape of the pipe, or the like. It is determined.
【0014】このような本発明の配管を他の配管等の筒
体に連結するには、図2に示す如く、連結端部の外周に
雄ネジ3aが設けられた、本発明に係る配管1よりも径
の大きい配管(大径配管)3に、配管1の連結端部1A
を差し込み、袋ナット4の後端縁4Aを配管1の膨出部
2に係止させながら、大径配管3の雄ネジ3aに袋ナッ
ト4の雌ネジ4aをねじ込み、袋ナット4の後端縁4A
と大径配管3の先端面3Aとの間でゴムパッキン5を介
して配管1の膨出部2を挟み付けて配管1を大径配管3
に連結する。In order to connect such a pipe of the present invention to a tubular body such as another pipe, as shown in FIG. 2, a pipe 1 according to the present invention in which a male screw 3a is provided on the outer periphery of the connecting end. For a pipe (large-diameter pipe) 3 having a diameter larger than that of the connecting end 1A of the pipe 1.
, The female nut 4a of the cap nut 4 is screwed into the male screw 3a of the large diameter pipe 3 while the rear end edge 4A of the cap nut 4 is locked to the bulging portion 2 of the pipe 1. Edge 4A
And the tip surface 3A of the large-diameter pipe 3 with the bulging portion 2 of the pipe 1 sandwiched by the rubber packing 5 to form the large-diameter pipe 3
Connect to.
【0015】これにより、配管1は膨出部2で袋ナット
4に係止され、一方、大径配管3は袋ナット4にねじ込
みにより固定されるため、配管1と大径配管3とは強固
に連結される。As a result, the pipe 1 is locked to the cap nut 4 at the bulging portion 2, while the large-diameter pipe 3 is fixed to the cap nut 4 by screwing. Therefore, the pipe 1 and the large-diameter pipe 3 are solid. Connected to.
【0016】なお、このような連結に当たり、配管1の
膨出部2は配管1の長手方向に伸縮可能であることか
ら、配管1を長手方向に引っ張ることにより膨出部2を
縮径させ(図1(b)の状態)、この状態で袋ナット4
を容易に配管1の連結端1A側から挿入し、且つ膨出部
2の部分を通過させることができる。そして、その後、
配管1を長手方向に押圧して膨出部2を拡径させ(図1
(c)の状態)、袋ナット4の後端縁4Aをこの膨出部
2に確実に係合させることができる。In connection with such a connection, since the bulging portion 2 of the pipe 1 can be expanded and contracted in the longitudinal direction of the pipe 1, the diameter of the bulging portion 2 is reduced by pulling the pipe 1 in the longitudinal direction ( 1 (b) state), in this state the cap nut 4
Can be easily inserted from the side of the connecting end 1A of the pipe 1, and the bulging portion 2 can be passed through. And then
The bulging portion 2 is expanded by pressing the pipe 1 in the longitudinal direction (see FIG.
In the state (c), the rear end edge 4A of the cap nut 4 can be reliably engaged with the bulging portion 2.
【0017】なお、図2においては、配管1の膨出部2
と大径配管3の先端面3Aとの間にゴムパッキン5を介
在させているが、このゴムパッキン5と袋ナット後端縁
4Aとの間に膨出部2が介在し、この膨出部2がワッシ
ャの役割も果すようになるため、袋ナット4を容易に締
め込むことができる。In FIG. 2, the bulging portion 2 of the pipe 1
The rubber packing 5 is interposed between the rubber packing 5 and the front end surface 3A of the large-diameter pipe 3, and the bulging portion 2 is interposed between the rubber packing 5 and the rear end edge 4A of the cap nut. Since 2 also plays the role of a washer, the cap nut 4 can be easily tightened.
【0018】[0018]
【発明の効果】以上詳述した通り、本発明の配管及び配
管の連結方法によれば、異径配管を袋ナットを用いて容
易かつ強固に連結固定することができる。As described above in detail, according to the pipe and the pipe connecting method of the present invention, different diameter pipes can be easily and firmly connected and fixed using a cap nut.
【図1】本発明の配管の一実施例を示す断面図である。FIG. 1 is a cross-sectional view showing an embodiment of the pipe of the present invention.
【図2】本発明の配管による連結構造の一実施例を示す
断面図である。FIG. 2 is a cross-sectional view showing an example of a connection structure by piping of the present invention.
【図3】従来の配管の連結方法を示す図であり、(a)
は分解斜視図、(b)は断面図を示す。FIG. 3 is a diagram showing a conventional method for connecting pipes, (a)
Shows an exploded perspective view, and (b) shows a sectional view.
1 配管 2 膨出部 3 大径配管 4 袋ナット 5 ゴムパッキン 1 piping 2 bulge 3 large diameter piping 4 cap nut 5 rubber packing
Claims (2)
管の長手方向に伸縮可能な膨出部が周設されてなる配
管。1. A pipe in which a bulging portion which bulges outward and is expandable and contractible in the longitudinal direction of the pipe is provided in the vicinity of one end.
請求項1の配管の一端部を差し込み、袋ナットの後端縁
を前記膨出部に係止させながら該雄ネジにねじ込み、該
袋ナットの後端縁と前記筒体の先端面との間で該膨出部
を挟み付けて該配管を該筒体に連結するようにした配管
の連結方法であって、 前記配管を前記筒体に差し込むのに先立って、前記配管
を長手方向に引っ張ることにより前記膨出部を縮径さ
せ、この状態で袋ナットを該配管の一端側から挿入し、
且つ該膨出部の部分を通過させ、 その後、該配管を長手方向に押圧して該膨出部を拡径さ
せ、袋ナットの後端縁が該膨出部に係合しうるようにし
たことを特徴とする配管の連結方法。2. The one end of the pipe according to claim 1 is inserted into a cylindrical body having an external thread on the outer periphery of the end, and the rear end edge of the cap nut is locked to the bulging portion while the external thread is attached to the external thread. A method for connecting pipes, wherein the pipe is connected to the cylinder by screwing, and the bulging portion is sandwiched between the rear end edge of the cap nut and the front end surface of the cylinder. Prior to inserting into the tubular body, the pipe is pulled in the longitudinal direction to reduce the diameter of the bulging portion, and in this state, a cap nut is inserted from one end side of the pipe,
Moreover, the bulging portion is passed, and then the pipe is pressed in the longitudinal direction to expand the bulging portion so that the rear end edge of the cap nut can be engaged with the bulging portion. A method for connecting pipes characterized by the above.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP31047293A JPH07158782A (en) | 1993-12-10 | 1993-12-10 | Piping and connecting method of piping |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP31047293A JPH07158782A (en) | 1993-12-10 | 1993-12-10 | Piping and connecting method of piping |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH07158782A true JPH07158782A (en) | 1995-06-20 |
Family
ID=18005660
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP31047293A Pending JPH07158782A (en) | 1993-12-10 | 1993-12-10 | Piping and connecting method of piping |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH07158782A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003070392A (en) * | 2001-09-06 | 2003-03-11 | Shimano Inc | Fishing rod joint structure |
JP2007020552A (en) * | 2005-07-19 | 2007-02-01 | Makoto Shimojima | Length adjuster for telescopically extensible rod |
JP2008125955A (en) * | 2006-11-24 | 2008-06-05 | Moonbat Co Ltd | Structure for fixing handle of recyclable umbrella |
JP2016200202A (en) * | 2015-04-09 | 2016-12-01 | ブリヂストンフローテック株式会社 | Pipe joint |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS48100723A (en) * | 1972-03-03 | 1973-12-19 | ||
JPS5035369U (en) * | 1973-07-21 | 1975-04-15 |
-
1993
- 1993-12-10 JP JP31047293A patent/JPH07158782A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS48100723A (en) * | 1972-03-03 | 1973-12-19 | ||
JPS5035369U (en) * | 1973-07-21 | 1975-04-15 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003070392A (en) * | 2001-09-06 | 2003-03-11 | Shimano Inc | Fishing rod joint structure |
JP2007020552A (en) * | 2005-07-19 | 2007-02-01 | Makoto Shimojima | Length adjuster for telescopically extensible rod |
JP2008125955A (en) * | 2006-11-24 | 2008-06-05 | Moonbat Co Ltd | Structure for fixing handle of recyclable umbrella |
JP2016200202A (en) * | 2015-04-09 | 2016-12-01 | ブリヂストンフローテック株式会社 | Pipe joint |
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