JP2000205473A - Expansion joint of tube body - Google Patents
Expansion joint of tube bodyInfo
- Publication number
- JP2000205473A JP2000205473A JP11004019A JP401999A JP2000205473A JP 2000205473 A JP2000205473 A JP 2000205473A JP 11004019 A JP11004019 A JP 11004019A JP 401999 A JP401999 A JP 401999A JP 2000205473 A JP2000205473 A JP 2000205473A
- Authority
- JP
- Japan
- Prior art keywords
- cap
- peripheral surface
- tube
- fixed
- female screw
- 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
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/12—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement
- F16L27/127—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement with means for locking the longitudinal adjustment or movement in the final mounted position
- F16L27/1274—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement with means for locking the longitudinal adjustment or movement in the final mounted position by means of a swivel nut
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints With Pressure Members (AREA)
- Joints Allowing Movement (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、長さ調節可能な構造部
材として種々の分野で使用される管体の伸縮継手に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tubular expansion joint used in various fields as a structural member whose length can be adjusted.
【０００２】[0002]
【従来の技術】各種作業台，仮設足場等の仮設構造体で
は、脚，横桟等の構造部材の長さが使用環境に応じて変
わってくる。使用環境に対する適応性は、構造部材の長
さを自由に替えることができる構造によって高められ
る。そこで、従来から各種の伸縮継手が提案され、実用
化されている。管体の伸縮継手では、外管に差し込まれ
た内管の差込み量を調節し、必要長さになった位置で適
宜の手段によって内管を外管に固定する方式が採用され
ている。2. Description of the Related Art In temporary structures such as various worktables and temporary scaffolds, the lengths of structural members such as legs and crossbars vary according to the use environment. The adaptability to the use environment is enhanced by the structure in which the length of the structural member can be freely changed. Therefore, various types of expansion joints have been conventionally proposed and put into practical use. In the expansion joint of a tubular body, a method is employed in which the insertion amount of the inner tube inserted into the outer tube is adjusted, and the inner tube is fixed to the outer tube by a suitable means at a position where the inner tube has a required length.
【０００３】[0003]
【発明が解決しようとする課題】従来の伸縮継手は、比
較的複雑な構造をもち、多数の部品を必要とするものが
多い。そのため、乱雑な環境になりがちな土木作業，建
築作業等の現場に適したものとはいえない。また、連結
部に突起があると、作業者，機材等が接触する虞れもあ
る。本発明は、このような問題を解消すべく案出された
ものであり、連結部に突起がなく、簡単な構造をもち、
長さを自在に調節できる伸縮継手を提供することを目的
とする。Many of the conventional expansion joints have a relatively complicated structure and require many parts. Therefore, it cannot be said that it is suitable for the site of civil engineering work, construction work, etc., which tend to be in a messy environment. Further, if the connecting portion has a projection, there is a possibility that an operator, equipment and the like may come into contact with each other. The present invention has been devised in order to solve such a problem, has no protrusion in the connecting portion, has a simple structure,
It is an object to provide an expansion joint whose length can be freely adjusted.
【０００４】[0004]
【課題を解決するための手段】本発明の伸縮継手は、そ
の目的を達成するため、外管の管端に固着され、外周面
に雄ネジが刻設され、外管の管端とは逆方向に突出部が
突出している固定キャップと、外管に差し込まれる内管
又は丸棒に嵌挿され、固定キャップの雄ネジと噛合う雌
ネジ及び雌ネジに隣接するテーパ部が内周面に形成され
た回転リングと、回転リングの雌ネジ及びテーパ部と内
管の外周面で区画される凹窪部に内挿された締付けリン
グとを備え、固定キャップに回転キャップをねじ込んだ
とき、固定キャップの突出部で押された締付けリングが
テーパ部に沿って移動し内管又は丸棒の外周面に押し付
けられることを特徴とする。回転キャップの内周面に形
成されるテーパ部は、軸方向に対し２０〜４５度の傾斜
角度をもつことが好ましい。In order to achieve the object, the expansion joint of the present invention is fixed to the end of the outer tube, is provided with a male screw on the outer peripheral surface, and is opposite to the end of the outer tube. A fixed cap with a protruding part projecting in the direction, an internal thread inserted into the outer pipe or a round bar inserted into the outer pipe, a female screw meshing with the male screw of the fixed cap, and a taper part adjacent to the female screw are formed on the inner peripheral surface. It is provided with a formed rotating ring, a tightening ring inserted in a female screw and a tapered portion of the rotating ring, and a concave portion defined by an outer peripheral surface of the inner tube, and fixed when the rotating cap is screwed into the fixed cap. The tightening ring pressed by the protrusion of the cap moves along the tapered portion and is pressed against the outer peripheral surface of the inner tube or the round bar. The tapered portion formed on the inner peripheral surface of the rotating cap preferably has an inclination angle of 20 to 45 degrees with respect to the axial direction.
【０００５】[0005]
【実施の形態】本発明に従った伸縮継手は、たとえば図
１に示すように固定キャップ１０が固着された外管Ｐ1
に、回転キャップ２０を嵌挿した内管Ｐ2 を差し込む構
造をもっている。外管Ｐ1 及び内管Ｐ2 は、アルミニウ
ム材料，鋼材，或いはそれらの組合せが使用される。た
とえば、軽量化，耐久化を図るためには、外径３５ｍ
ｍ，肉厚２ｍｍ程度の６０６３−Ｔ５等のアルミニウム
押出形材が外管Ｐ1 として使用され、外径３０ｍｍ，肉
厚２ｍｍ程度の６０６３−Ｔ５等のアルミニウム押出形
材が内管Ｐ2 として使用される。内管Ｐ2 に替え、中実
の丸棒を使用することもできる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An expansion joint according to the present invention is, for example, an outer pipe P 1 to which a fixing cap 10 is fixed as shown in FIG.
A has a structure in which insertion of the inner tube P 2 which fitted the rotating cap 20. Outer tube P 1 and the inner tube P 2 is an aluminum material, steel, or combinations thereof are used. For example, an outer diameter of 35 m
m, 6063-T5 such as an aluminum extruded profile of the thickness of approximately 2mm is used as an outer tube P 1, used as the inner tube P 2 is an outer diameter of 30 mm, an aluminum extruded profile, such as 6063-T5 having a thickness of approximately 2mm Is done. Instead of the inner pipe P 2, it is also possible to use a solid round bar.
【０００６】固定キャップ１０及び回転キャップ２０
は、６０６３−Ｔ５等のアルミニウム合金，ステンレス
鋼，普通鋼等の材質でできている。前掲した寸法の外管
Ｐ1 及び内管Ｐ2 に対しては、たとえば外径３８ｍｍ，
内径３２ｍｍ，長さ５０ｍｍ程度の固定キャップ１０及
び外径５０ｍｍ，肉厚１２ｍｍ程度の回転キャップ２０
が使用される。固定キャップ１０は、溶接ｗ等で外管Ｐ
1 の管端に固着されており、内管Ｐ2が挿入される内径
をもっている。固定キャップ１０の周面に雄ネジ１１が
刻設されており、雄ネジ１１よりも端部側が突出部１２
になっている。雄ネジ１１は、たとえば固定キャップ１
０の軸方向に沿った長さで２５ｍｍ，ネジ深さ１ｍｍ程
度のサイズで固定キャップ１０の周面に刻設される。突
出部１２は、たとえば１５ｍｍの長さで雌ネジ１１から
端部方向に延びている。[0006] Fixed cap 10 and rotating cap 20
Is made of a material such as an aluminum alloy such as 6063-T5, stainless steel, or ordinary steel. Supra were against the outer tube P 1 and the inner tube P 2 dimensions, for example, an outer diameter of 38mm,
A fixed cap 10 having an inner diameter of 32 mm and a length of about 50 mm and a rotating cap 20 having an outer diameter of 50 mm and a thickness of about 12 mm
Is used. The fixed cap 10 is connected to the outer tube P by welding w or the like.
Are fixed to one tube end, it has an inner diameter that the inner tube P 2 is inserted. A male screw 11 is engraved on the peripheral surface of the fixing cap 10, and a protruding portion 12
It has become. The male screw 11 is, for example, a fixing cap 1
It is engraved on the peripheral surface of the fixed cap 10 with a length along the axial direction of 0 and a size of about 25 mm and a screw depth of about 1 mm. The protruding portion 12 has a length of, for example, 15 mm and extends in the end direction from the female screw 11.
【０００７】回転キャップ２０は、内管Ｐ2 の外径より
も若干大きな内径をもち、回転・移動可能に内管Ｐ2 に
嵌挿される。回転キャップ２０の内周面には、固定キャ
ップ１０の雄ネジ１１に噛み合う雌ネジ２１が刻設さ
れ、凹窪部２２を介して一端がテーパ部２３になってい
る。回転キャップ２０の外周面は、固定キャップ１０に
回転キャップ２０を螺合するときの手掛りとするため、
たとえばローレット加工面２４となっている。雌ネジ２
１は、たとえば軸方向長さ３３ｍｍで回転キャップ２０
の内周面に刻設される。[0007] Rotation cap 20 has a slightly larger inner diameter than the outer diameter of the inner tube P 2, is fitted rotatably and movement to the inner pipe P 2. A female screw 21 that meshes with the male screw 11 of the fixed cap 10 is engraved on the inner peripheral surface of the rotating cap 20, and has one end formed into a tapered portion 23 via a concave recess 22. The outer peripheral surface of the rotating cap 20 serves as a clue when screwing the rotating cap 20 to the fixed cap 10,
For example, it is a knurled surface 24. Female screw 2
1 is, for example, a rotary cap 20 having an axial length of 33 mm.
It is engraved on the inner peripheral surface of.
【０００８】雌ネジ２１とテーパ部２３との間の凹窪部
２２に、図２に示すように締付けリング３０が介装され
ている。締付けリング３０は、バネ性のある線材をリン
グ状に曲げ加工し、内管Ｐ2 の外径よりも若干大きな内
径をもち、若干の間隙Ｇをもって両端が開いた形状に成
形されている。締付けリング３０の線径は、凹窪部２２
に介装されたる大きさに設定されている。具体的には、
外径３０．０ｍｍの外管Ｐ2 では、直径４ｍｍ程度のバ
ネ鋼を内径３０．２ｍｍ程度のリング状に加工し、間隙
Ｇを１０ｍｍ程度に調整する。締付けリング３０は、凹
窪部２２に嵌め込んだ状態で若干圧縮され、その反力と
しての弾撥力で凹窪部２２の内周面、すなわちテーパ部
２３に押し付けられるため、回転キャップ２０が動かな
くなり、内管Ｐ2 が回転キャップ２０から抜止めされ
る。As shown in FIG. 2, a tightening ring 30 is interposed in the concave recess 22 between the female screw 21 and the tapered portion 23. Clamping ring 30, by bending a wire with a spring property in a ring shape, it has a slightly larger inner diameter than the outer diameter of the inner tube P 2, which is molded into a shape having both ends open with a slight gap G. The wire diameter of the tightening ring 30 is
It is set to the size that is interposed. In particular,
In the outer diameter 30.0mm of outer tube P 2, it processes the spring steel having a diameter of about 4mm in a ring shape having an inner diameter of about 30.2 mm, to adjust the gap G of about 10 mm. The tightening ring 30 is slightly compressed while being fitted into the concave portion 22, and is pressed against the inner peripheral surface of the concave portion 22, that is, the taper portion 23 by a repulsive force as a reaction force. move no longer, inner tube P 2 are fit retaining the rotating cap 20.
【０００９】外管Ｐ1 及び内管Ｐ2 からなる伸縮管の長
さは、外管Ｐ1 に対する内管Ｐ2 の差込み量を変えるこ
とにより調整される。伸縮管が必要長さになったとき、
回転キャップ２０を内管Ｐ2 の管軸方向に沿って移動さ
せ、回転キャップ２０を回転させて雄ネジ１１に雌ネジ
２１を噛み合わせる。回転キャップ２０の回転を進める
と、固定キャップ１０の突出部１２が雌ネジ２１を超え
て締付けリング３０に突き当たる。更に回転キャップ２
０を回転させると、締付けリング３０が固定キャップ１
０の突出部１２で押され、テーパ部２３に沿って縮径す
る。締付けリング３０は、テーパ部２３に沿って奥行き
方向に押されるが、先細りのテーパ部２３で間隙Ｇが狭
められ、ある位置よりも奥行き方向に移動しなくなる。
このとき、締付けリング３０は、内管Ｐ2 の周面及び回
転キャップ２０のテーパ部２３を弾性的に押圧し、内管
Ｐ2 に回転キャップ２０を固定する。The length of the telescopic tube comprising the outer tube P 1 and the inner tube P 2 is adjusted by changing the insertion amount of the inner tube P 2 with respect to the outer tube P 1 . When the telescopic tube reaches the required length,
It is moved along the rotating cap 20 in the tube axis direction of the inner pipe P 2, to rotate the rotating cap 20 to the male screw 11 engage the female thread 21. When the rotation of the rotating cap 20 is advanced, the protrusion 12 of the fixed cap 10 exceeds the female screw 21 and abuts on the tightening ring 30. In addition, rotating cap 2
0, the tightening ring 30 is fixed to the fixed cap 1.
It is pushed by the zero protruding portion 12 and contracts in diameter along the tapered portion 23. The tightening ring 30 is pushed in the depth direction along the taper portion 23, but the gap G is narrowed by the tapered taper portion 23, so that it does not move in the depth direction more than a certain position.
At this time, clamping ring 30, the tapered portion 23 of the circumferential surface and rotating the cap 20 of the inner tube P 2 elastically pressed to fix the rotating cap 20 in the inner tube P 2.
【００１０】締付けリング３０の圧縮による内管Ｐ2 の
外周面への押圧には、管軸方向に対するテーパ部２３の
傾斜角度θを２０〜４５度の範囲に設定することが好ま
しい。傾斜角度θを２０度未満にすると、必要とするテ
ーパ部２３を確保するために回転リング２０が長くなり
すぎる。逆に４５度を超える傾斜角度θでは、締付けリ
ング３０の奥行き側への移動量が少なくなり、十分な締
付け力が得られない。雄ネジ１１と雌ネジ２１との噛合
いで固定キャップ１０に回転キャップ２０が接続されて
いるので、外管Ｐ1 に対し内管Ｐ2 が任意の差込み位置
で固定される。このようにして、外管Ｐ1 及び内管Ｐ2
からなる伸縮管が必要長さに調整される。[0010] clamping pressure on the outer peripheral surface of the inner tube P 2 due to compression of the ring 30, it is preferable to set the inclination angle θ of the tapered portion 23 with respect to the tube axis direction in a range of 20 to 45 degrees. If the inclination angle θ is less than 20 degrees, the rotating ring 20 becomes too long to secure the required tapered portion 23. Conversely, if the inclination angle θ exceeds 45 degrees, the amount of movement of the tightening ring 30 to the depth side decreases, and a sufficient tightening force cannot be obtained. Since the rotation cap 20 is connected to the fixed cap 10 in engagement with the male thread 11 and female thread 21, inner pipe P 2 relative to the outer tube P 1 is fixed at an arbitrary insertion positions. Thus, the outer pipe P 1 and the inner pipe P 2
Is adjusted to the required length.
【００１１】この伸縮継手では、所定差込み量で内管Ｐ
2 を外管Ｐ1 に差し込んだ後、固定キャップ１０に回転
キャップ２０をねじ込むだけの簡単な操作により、必要
な長さをもつ伸縮管が得られる。また、内管Ｐ2 の固定
は、回転キャップ２０の逆方向回転で容易に解除され
る。しかも、外管Ｐ1 と内管Ｐ2 との連結部には半径方
向に突出するものがないため、作業者や機材が引っ掛る
こともない。In this expansion joint, the inner pipe P
After inserting a 2 to outer tube P 1, by the simple operation of screwing the rotary cap 20 to the fixed cap 10, expansion pipe having a required length is obtained. Further, the fixed inner tube P 2 is easily released by reverse rotation of the rotary cap 20. Moreover, the connecting portion of the outer tube P 1 and the inner pipe P 2 because there is nothing projecting radially nor the workers and equipment are caught.
【００１２】[0012]
【発明の効果】以上に説明したように、本発明の伸縮継
手は、外管に挿入される内管又は丸棒の差込み量を調節
した後、固定キャップに回転キャップをねじ込むだけの
簡単な操作で、伸縮管の長さを自在に調節できる。ま
た、回転キャップの逆方向回転により外管に対する内管
又は丸棒の固定状態が解除される。しかも、別途の連結
金具を必要とせず、作業者や機材が引っ掛る突起が連結
部の半径方向に突出していない。そのため、土木現場，
建築現場等の比較的各種機材が乱雑になり易い環境にお
いても、安全で作業性の良い伸縮継手として使用され
る。As described above, the expansion joint according to the present invention is a simple operation in which the rotating cap is screwed into the fixed cap after adjusting the insertion amount of the inner pipe or the round bar inserted into the outer pipe. Thus, the length of the telescopic tube can be freely adjusted. In addition, the fixed state of the inner tube or the round bar with respect to the outer tube is released by the reverse rotation of the rotating cap. In addition, no separate connecting hardware is required, and the projections on which the worker and the equipment are hooked do not protrude in the radial direction of the connecting portion. Because of that,
It is used as an expansion joint that is safe and has good workability even in an environment such as a construction site where various types of equipment are relatively likely to be cluttered.
【図１】 本発明に従った伸縮継手の斜視図FIG. 1 is a perspective view of an expansion joint according to the present invention.
【図２】 外管を内管に連結した部分の一部断面図FIG. 2 is a partial cross-sectional view of a portion where an outer tube is connected to an inner tube.
１０：固定キャップ １１：雄ネジ １２：突出部 ２０：回転キャップ ２１：雌ネジ ２２：凹窪部
２３：テーパ部 ２４：ローレット加工面 ３０：締付けリング Ｐ1 ：外管 Ｐ2 ：内管 Ｇ：締付けリン
グの間隙10: fixing cap 11: male thread 12: protrusion 20: rotating cap 21: the female screw 22: recessed portion 23: tapered portion 24: knurled surface 30: clamping ring P 1: the outer tube P 2: the inner tube G: Tightening ring clearance
フロントページの続き Ｆターム(参考） 3H014 GA16 3H104 JA08 JB02 JD09 LG02 LG22 3J039 AA03 AB03 BB01 DA04 GA07 GA12 Continuation of the front page F term (reference) 3H014 GA16 3H104 JA08 JB02 JD09 LG02 LG22 3J039 AA03 AB03 BB01 DA04 GA07 GA12
Claims (2)
が刻設され、外管の管端とは逆方向に突出部が突出して
いる固定キャップと、外管に差し込まれる内管又は丸棒
に嵌挿され、固定キャップの雄ネジと噛合う雌ネジ及び
雌ネジに隣接するテーパ部が内周面に形成された回転リ
ングと、回転リングの雌ネジ及びテーパ部と内管の外周
面で区画される凹窪部に内挿された締付けリングとを備
え、固定キャップに回転キャップをねじ込んだとき、固
定キャップの突出部で押された締付けリングがテーパ部
に沿って移動し内管又は丸棒の外周面に押し付けられる
管体の伸縮継手。1. A fixing cap fixed to an end of an outer tube, having a male screw engraved on an outer peripheral surface, and having a projecting portion projecting in a direction opposite to the end of the outer tube. A rotary ring having a female screw and a taper portion formed on the inner peripheral surface adjacent to the female screw, the female screw being engaged with the male screw of the fixed cap and being inserted into the pipe or the round bar; A tightening ring inserted in a concave portion defined by the outer peripheral surface of the fixing cap, and when the rotating cap is screwed into the fixing cap, the tightening ring pressed by the protrusion of the fixing cap moves along the tapered portion. An expansion joint of a tubular body pressed against the outer peripheral surface of an inner pipe or a round bar.
る傾斜角度２０〜４５度でテーパ部が形成されている請
求項１記載の管体の伸縮継手。2. The expansion joint for a tubular body according to claim 1, wherein a tapered portion is formed on the inner peripheral surface of the rotating cap at an inclination angle of 20 to 45 degrees with respect to the axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11004019A JP2000205473A (en) | 1999-01-11 | 1999-01-11 | Expansion joint of tube body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11004019A JP2000205473A (en) | 1999-01-11 | 1999-01-11 | Expansion joint of tube body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000205473A true JP2000205473A (en) | 2000-07-25 |
Family
ID=11573272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11004019A Pending JP2000205473A (en) | 1999-01-11 | 1999-01-11 | Expansion joint of tube body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000205473A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007503315A (en) * | 2003-08-27 | 2007-02-22 | プロライト ヴァストゴード ビー．ヴイ． | Welding device and welding torch |
| JP2008125955A (en) * | 2006-11-24 | 2008-06-05 | Moonbat Co Ltd | Structure for fixing handle of recyclable umbrella |
| JP2013530748A (en) * | 2010-06-01 | 2013-08-01 | ブアダンエンタープライズ，リミテッドライアビリティカンパニー | Upper arm stabilization shoulder stretcher |
| JP2015230030A (en) * | 2014-06-04 | 2015-12-21 | 因幡電機産業株式会社 | Pipe joint |
| CN106287063A (en) * | 2016-11-02 | 2017-01-04 | 崔咪笑 | A kind of scalable fixing pipe |
-
1999
- 1999-01-11 JP JP11004019A patent/JP2000205473A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007503315A (en) * | 2003-08-27 | 2007-02-22 | プロライト ヴァストゴード ビー．ヴイ． | Welding device and welding torch |
| JP2008125955A (en) * | 2006-11-24 | 2008-06-05 | Moonbat Co Ltd | Structure for fixing handle of recyclable umbrella |
| JP2013530748A (en) * | 2010-06-01 | 2013-08-01 | ブアダンエンタープライズ，リミテッドライアビリティカンパニー | Upper arm stabilization shoulder stretcher |
| JP2015230030A (en) * | 2014-06-04 | 2015-12-21 | 因幡電機産業株式会社 | Pipe joint |
| CN106287063A (en) * | 2016-11-02 | 2017-01-04 | 崔咪笑 | A kind of scalable fixing pipe |
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