JP4490575B2 - Universal joint for piping - Google Patents

Universal joint for piping Download PDF

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Publication number
JP4490575B2
JP4490575B2 JP2000320935A JP2000320935A JP4490575B2 JP 4490575 B2 JP4490575 B2 JP 4490575B2 JP 2000320935 A JP2000320935 A JP 2000320935A JP 2000320935 A JP2000320935 A JP 2000320935A JP 4490575 B2 JP4490575 B2 JP 4490575B2
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JP
Japan
Prior art keywords
pipe
connection portion
joint
side connection
movable
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 - Lifetime
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JP2000320935A
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Japanese (ja)
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JP2002130565A (en
Inventor
和夫 石川
雅也 徳田
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Tabuchi Corp
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Tabuchi Corp
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Filing date
Publication date
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Priority to JP2000320935A priority Critical patent/JP4490575B2/en
Publication of JP2002130565A publication Critical patent/JP2002130565A/en
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Description

【0001】
【発明の属する技術分野】
この発明は配管を接続する継手に係り、当該接続配管の方向を可変としたユニバーサルジョイントに関するものである。
【0002】
【従来の技術】
従来、例えば水道管を配管するに際して、その途中に障害物があるなど、角度をつけて配管しようとする場合は、継手としてエルボ管を用いたり、水道管として蛇腹形状のフレキシブル管を用いていた。
【0003】
【発明が解決しようとする課題】
しかしながら、エルボ管を用いる場合は、その角度は固定されたものであるから、配管の完了後に配管角度を変更することはできない。つまり、配管業者は数あるエルボ管の中から所望の角度を有するエルボ管を選択する必要があるため、この者にあっては万全のため角度が異なる数種類のエルボ管を用意しなければならないのみならず、メーカーにとっても数種類のエルボ管を提供しなければならないという課題がある。
【0004】
また、配管作業において事後的に配管角度を変更することはそれほど頻繁でないとしても、配管角度が固定されている場合には、上述の他、次のような課題もある。即ち、その課題とは耐震性や耐変動性であって、例えば地震による地盤変位に伴って配管に外力が作用した場合、その外力は継手にも作用することになるが、このとき継手がエルボ管のような角度固定のものであると外力を吸収することができず、その接合部が破損等するおそれがある。
【0005】
これに対してフレキシブル管は可撓性を有するため、エルボ管と比すれば外力吸収による耐震性等をある程度は期待できる。しかしながら、フレキシブル管には別の課題として次のようなことが挙げられる。即ち、フレキシブル管が可撓性を有するとしても、その途中を短い距離で90度以上に折曲するなどということはできず、角度を付ける場合には非常に緩やかにしか曲げることはできないため、その折曲範囲について配管スパンが長くなって施工の省スペース化を図ることができないという課題があるのである。ここで配管スパンが長くなることは、配管の埋め込み用掘削範囲が拡大することから、好ましくないことはいうまでもない。
【0006】
本発明は上述した課題を解決するためになされたもので、その目的とするところは接続配管を全方向に可変できる構成とすることで耐震性や耐変動性を有し、且つ、施工の省スペース化および施工部材点数の減少を図り、結果、施工性の大幅な向上を達成し得る配管継手を提供することである。
【0007】
【課題を解決するための手段】
本発明では上記目的を達成するために、配管の固定側接続部に対して、継手本体を介して、その中心軸回りに可動側接続部を360度回動可能に設けると共に、さらにこの可動側接続部を前記中心軸と直交する回動軸回りに180度以上回動可能に設けた配管のユニバーサルジョイントであって、前記継手本体は、前記固定側接続部に360度回動可能に嵌め込まれる回動部と、この回動部から2方向に分岐した二股部とからなり、当該二股部の片側には前記回動部と連通する流路を形成する一方、他方側は中実として、両者の間に前記流路と連通する内部流路を有した前記回動軸を介して前記可動側接続部を180度回動可能に設けという手段を用いた。
【0009】
【発明の実施の形態】
以下、本発明の好ましい実施の形態を添付した図面に従って説明する。図1は本発明の一実施形態に係るユニバーサルジョイントJをサドル分水栓Sの分岐管P接続に適用した例を示したものである。一般にサドル分水栓Sに分岐管Pを接続する場合、分岐部が横側に開口するため、分岐管Pは水平方向に配設される。しかし、その後、分岐管Pを各家庭や設備等に配管するには、分岐管Pが地中から表出するように上向きに配管方向を切り替えなければならない。つまり、サドル分水栓Sに分岐管Pを接続する場合は、分岐管Pをその接続先で少なくとも90度の角度をつけて配管する必要がある。本ユニバーサルジョイントはこのように配管方向の切換えが必要なときに使用されるもので、その使用態様はサドル分水栓の分岐管接続だけでなく、その他、配管先に障害物があるときなども含まれる。
【0010】
図2は上記ユニバーサルジョイントJの縦断面図、図3は図2を側面視とした場合の一部切欠底面図である。この実施形態に係るユニバーサルジョイントJは、固定側接続部1、継手本体2、回動軸3、止水キャップ4、そして可動側接続部5の五部材からなる。
【0011】
各部材について構造上の詳細を説明すると、先ず固定側接続部1は筒状を呈し、その一端を継手本体2の接続部1aとすると共に、接続部1aの反対側の内周一部には雌ねじ1bを刻設することによって、例えば上述したサドル分水栓Sの分岐部に接続可能としたものである。そして、この固定側接続部1を前記分岐部に接続する場合は、外周に一体成型されたナット部1cをスパナにより回し行う。なお、ここで固定側接続部1の接続対象は前記サドル分水栓に限定されず、他の器具であってもよい。本発明で必要なことは少なくとも継手本体2の接続部1aを有することである。
【0012】
次に継手本体2は、固定側接続部1の接続部1aに回動可能に嵌め込まれる回動部2aと、この回動部2aから2方向に分岐した二股部2bとからなる。なお、7は継手本体2の固定側接続部1からの抜けを防止するためのストッパーである。そして、二股部2bの片側2c(図1における上部側)は回動部2aの流路2dと連通する流路2eが形成されると共に、この流路2eと直交して片側二股部2cを貫通する回動軸3の挿入孔2fが形成されている。また、他方側二股部2gは中実であるが、前記挿入孔2fと同一軸線上に回動軸3の受け孔2hが形成されている。そして、二股部2bの間を可動側接続部5の接続部2iとしている。
【0013】
回動軸3は継手本体2の挿入孔2fに嵌め込み可能な有底筒部3aと、受け孔2hに枢支可能な軸部3bとを一体成形したものであって、有底筒部3aの内部を流路としている。また、有底筒部3aにはその上下に継手本体2の流路2eと通ずる通水孔3cと、継手本体1の接続部2iに位置して通水孔3dが形成され、結果、通水孔3c、内部流路、通水孔3dを介して固定側接続部1から入水した水を後述する可動側接続部5から配水することができる。
【0014】
可動側接続部5は継手本体2の接続部2iに回動可能に嵌め込まれる可動部5aの一端を閉塞した略有底筒状を呈し、この可動部5aの他端は任意の配管(例えば前記分岐管P)を接続できる配管接続部5bとして、両者を一体成形してなる。また、可動部5aには継手本体2の前記挿入孔2fと同一軸線上に貫通孔5cが形成され、回動軸3を挿入することによって可動側接続部5を回動可能に支持している。
【0015】
上記構成からなるユニバーサルジョイントは、固定側接続部1に継手本体2を回動可能に接続すると共に、継手本体2の接続部2iに可動側接続部5の可動部5aを両者の挿通孔2fと貫通孔5cが一致するように嵌め込み、次いで挿通孔2fおよび貫通孔5cを通して回動軸3を継手本体2の受け孔2hに枢支し、最後に回動軸3の開口部3eに止水キャップ4を螺合することで、組み立てが完了する。
【0016】
なお、8は本ユニバーサルジョイントの各関節に設けられたOリングであり、各関節からの漏水を防止するものである。ただし、このOリング8は各関節の動きを妨げるものではない。
【0017】
続いて上記ユニバーサルジョイントの使用要領を説明すると、上述したように組み立てが完了した後は、可動側接続部5に配管を接続する前に配管の端部と可動側接続部5の配管接続部5bとが向き合うように、可動側接続部5の向きを調整する。この調整作業は次のようにして行うことができる。即ち、先ず可動側接続部5を回動軸3を中心軸として適当な向きにする、あるいは必要であれば継手本体2を回転させて微調整を行い、可動側接続部5の配管接続部5bと配管端部とをより確実に向き合うようにして行われる。
【0018】
なお、ここでは配管の接続前に予め可動側接続部5の向きを調整するような手順を説明したが、可動側接続部5に先に配管を接続した後に可動側接続部5の向きを変更することであってもよい。つまり、配管を先に接続し、その後、配管の位置を決めるような場合でも、可動側接続部5は配管の位置決めに追随するように、回動軸3および継手本体2の回動部2aの2つの関節が動いて可動側接続部5の向きを調整することができるからである。
【0019】
また、配管の接続完了後の前記関節による可動側接続部5の向き変更は、地震などによる振動や地盤変位が発生したときにも機能し、これら振動に追随して、外力を吸収することになるため、配管と可動側接続部5の配管接続部5bや固定側接続部1の雌ねじ1bとの接続部から配管が破損等することを回避することができる。
【0020】
なお、上記実施形態では可動側接続部5を回動軸3および継手本体1の回動部2bの2つの関節により全方向性としたが、さらに可動側接続部5を伸縮自在な構成とすることで、配管との接続態様をより多彩にすることができる。また、地震などによって配管に引き抜き方向あるいは押し込み方向の力が働いた場合でも、可動側接続部5が伸縮することによって当該外力を吸収することができる。ここで伸縮自在な構成とは、例えば外管と内管による二重管構造などが該当する。また、伸縮自在な構成であっても、その伸縮時に水等が漏洩しない構成を採用することはもちろんである。
【0021】
【発明の効果】
以上説明したように、本発明によれば固定側接続の中心軸回りに可動側接続部を全周可能および前記中心軸との直交軸回りに180度以上の範囲で回動可能としたので、障害物等に対する急な曲げ配管が可能となった。これは配管の両端それぞれに本発明のユニバーサルジョイントを採用することで、より複雑な配管態様ともすることができる。さらに、配管の接続部は可動であるため、耐震性や耐変動性を有する継手とすることができた。
【図面の簡単な説明】
【図1】本発明の一実施形態に係るユニバーサルジョイントの使用例
【図2】前記ユニバーサルジョイントの上部縦断面図
【図3】図1の一部切欠底面図
【符号の説明】
1 固定側接続部
2 継手本体
3 回動軸
4 止水キャップ
5 可動側接続部
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a joint for connecting pipes, and relates to a universal joint in which the direction of the connecting pipe is variable.
[0002]
[Prior art]
Conventionally, when piping a water pipe, for example, when there is an obstacle in the middle of the pipe, an elbow pipe is used as a joint or a bellows-shaped flexible pipe is used as a water pipe. .
[0003]
[Problems to be solved by the invention]
However, when an elbow pipe is used, the angle cannot be changed after the pipe is completed because the angle is fixed. In other words, since the plumber needs to select an elbow pipe having a desired angle from among a number of elbow pipes, this person only has to prepare several types of elbow pipes with different angles for the sake of completeness. In addition, there is a problem that manufacturers have to provide several types of elbow pipes.
[0004]
Moreover, even if it is not so frequent to change the piping angle after the piping work, if the piping angle is fixed, there are the following problems in addition to the above. That is, the problem is earthquake resistance and variability. For example, when an external force is applied to the piping due to ground displacement due to an earthquake, the external force also acts on the joint. If the angle is fixed like a tube, external force cannot be absorbed, and the joint may be damaged.
[0005]
On the other hand, since the flexible tube has flexibility, it can be expected to some extent to have earthquake resistance due to external force absorption as compared with the elbow tube. However, the following is mentioned as another problem in the flexible tube. That is, even if the flexible tube has flexibility, it cannot be bent over 90 degrees at a short distance in the middle, and when it is angled, it can be bent only very gently, There is a problem that the pipe span becomes long in the bending range, and it is not possible to save the construction space. Needless to say, an increase in the piping span is not preferable because the excavation range for embedding the piping is expanded.
[0006]
The present invention has been made in order to solve the above-described problems. The object of the present invention is to have a seismic resistance and a variable resistance by making the connecting pipe variable in all directions, and to save construction. The purpose of the present invention is to provide a pipe joint capable of achieving a significant improvement in workability as a result of reducing space and the number of construction members.
[0007]
[Means for Solving the Problems]
In the present invention, in order to achieve the above object , a movable side connection portion is provided to be able to rotate 360 degrees around the central axis of the fixed side connection portion of the pipe via the joint body. A universal joint of a pipe provided with a connecting portion capable of turning 180 degrees or more around a turning axis orthogonal to the central axis, wherein the joint body is fitted to the fixed side connecting portion so as to be able to turn 360 degrees The rotating part and a bifurcated part branched in two directions from the rotating part, a flow path communicating with the rotating part is formed on one side of the bifurcated part, while the other side is solid, The movable side connecting portion is provided so as to be capable of rotating 180 degrees through the rotation shaft having an internal flow channel communicating with the flow channel.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 shows an example in which a universal joint J according to an embodiment of the present invention is applied to a branch pipe P connection of a saddle water faucet S. In general, when the branch pipe P is connected to the saddle water faucet S, the branch part opens in the lateral direction, and therefore the branch pipe P is disposed in the horizontal direction. However, after that, in order to pipe the branch pipe P to each home or facility, the pipe direction must be switched upward so that the branch pipe P is exposed from the ground. That is, when the branch pipe P is connected to the saddle water faucet S, it is necessary to pipe the branch pipe P at an angle of at least 90 degrees at the connection destination. This universal joint is used when it is necessary to switch the piping direction as described above, and its usage is not only connected to the branch pipe of the saddle water faucet, but also when there is an obstacle at the pipe end. included.
[0010]
2 is a longitudinal sectional view of the universal joint J, and FIG. 3 is a partially cutaway bottom view when FIG. 2 is viewed from the side. The universal joint J according to this embodiment includes five members: a fixed side connection portion 1, a joint body 2, a rotating shaft 3, a water stop cap 4, and a movable side connection portion 5.
[0011]
The structural details of each member will be described. First, the fixed-side connection portion 1 has a cylindrical shape, one end of which is a connection portion 1a of the joint body 2, and a part of the inner periphery on the opposite side of the connection portion 1a is internally threaded. By engraving 1b, for example, it can be connected to the branch portion of the saddle water faucet S described above. And when connecting this fixed side connection part 1 to the said branch part, the nut part 1c integrally molded by the outer periphery is rotated with a spanner. In addition, the connection object of the fixed side connection part 1 is not limited to the said saddle water faucet here, Other instruments may be sufficient. What is necessary in the present invention is to have at least the connecting portion 1 a of the joint body 2.
[0012]
Next, the joint main body 2 includes a rotating portion 2a that is rotatably fitted to the connecting portion 1a of the fixed-side connecting portion 1, and a bifurcated portion 2b that branches in two directions from the rotating portion 2a. Reference numeral 7 denotes a stopper for preventing the joint body 2 from coming off from the fixed side connecting portion 1. Further, one side 2c (upper side in FIG. 1) of the bifurcated portion 2b is formed with a flow channel 2e communicating with the flow channel 2d of the rotating portion 2a, and penetrates the one side bifurcated portion 2c perpendicular to the flow channel 2e. An insertion hole 2f for the rotating shaft 3 is formed. The other side bifurcated portion 2g is solid, but a receiving hole 2h for the rotating shaft 3 is formed on the same axis as the insertion hole 2f. A connection portion 2 i of the movable side connection portion 5 is defined between the forked portion 2 b.
[0013]
The rotating shaft 3 is formed by integrally forming a bottomed tube portion 3a that can be fitted into the insertion hole 2f of the joint body 2 and a shaft portion 3b that can be pivotally supported by the receiving hole 2h. The inside is a flow path. Further, the bottomed cylindrical portion 3a is formed with a water passage hole 3c communicating with the flow path 2e of the joint body 2 and a water passage hole 3d located at the connection portion 2i of the joint body 1 on the upper and lower sides. Water that has entered from the fixed-side connection portion 1 through the holes 3c, the internal flow path, and the water passage holes 3d can be distributed from the movable-side connection portion 5 described later.
[0014]
The movable side connecting portion 5 has a substantially bottomed cylindrical shape in which one end of a movable portion 5a that is rotatably fitted in the connecting portion 2i of the joint body 2 is closed, and the other end of the movable portion 5a is an arbitrary pipe (for example, the above-mentioned Both are integrally formed as a pipe connecting portion 5b to which the branch pipe P) can be connected. A through hole 5c is formed in the movable portion 5a on the same axis as the insertion hole 2f of the joint body 2, and the movable side connecting portion 5 is rotatably supported by inserting the rotating shaft 3. .
[0015]
The universal joint having the above-described configuration connects the joint body 2 to the fixed side connection portion 1 so as to be rotatable, and connects the movable portion 5a of the movable side connection portion 5 to the connection portion 2i of the joint body 2 with both insertion holes 2f. The through hole 5c is fitted so as to coincide with each other, and then the rotating shaft 3 is pivotally supported by the receiving hole 2h of the joint body 2 through the insertion hole 2f and the through hole 5c. Assembling is completed by screwing 4 together.
[0016]
Reference numeral 8 denotes an O-ring provided at each joint of the universal joint, which prevents water leakage from each joint. However, the O-ring 8 does not hinder the movement of each joint.
[0017]
Next, the usage procedure of the universal joint will be described. After the assembly is completed as described above, before connecting the pipe to the movable side connecting part 5, the end of the pipe and the pipe connecting part 5b of the movable side connecting part 5 are used. The direction of the movable side connecting portion 5 is adjusted so that the two face each other. This adjustment operation can be performed as follows. That is, first, the movable side connection portion 5 is oriented in an appropriate direction with the rotation shaft 3 as the central axis, or if necessary, the joint body 2 is rotated to make fine adjustments, and the pipe connection portion 5b of the movable side connection portion 5 is adjusted. And the pipe end are more reliably faced to each other.
[0018]
Here, the procedure for adjusting the orientation of the movable side connection portion 5 in advance before connecting the pipe has been described, but the direction of the movable side connection portion 5 is changed after the pipe is first connected to the movable side connection portion 5. It may be to do. In other words, even when the pipe is connected first and then the position of the pipe is determined, the movable side connecting portion 5 of the rotary shaft 3 and the rotary portion 2a of the joint body 2 is adapted to follow the positioning of the pipe. This is because the direction of the movable side connecting portion 5 can be adjusted by moving the two joints.
[0019]
In addition, the change in the direction of the movable side connection portion 5 by the joint after the completion of the pipe connection also functions when vibration or ground displacement occurs due to an earthquake or the like, and follows these vibrations to absorb external force. Therefore, it is possible to avoid the pipe from being damaged from the connection portion between the pipe and the pipe connection portion 5b of the movable side connection portion 5 and the female screw 1b of the fixed side connection portion 1.
[0020]
In the above embodiment, the movable side connection portion 5 is omnidirectional by the two joints of the rotation shaft 3 and the rotation portion 2b of the joint body 1. However, the movable side connection portion 5 is configured to be extendable and contractible. Thereby, the connection aspect with piping can be made more various. Even when a force in the pulling direction or the pushing direction is applied to the pipe due to an earthquake or the like, the external force can be absorbed by the expansion and contraction of the movable side connecting portion 5. Here, the stretchable configuration corresponds to, for example, a double tube structure including an outer tube and an inner tube. Moreover, even if it is a structure which can be expanded-contracted, of course, the structure which does not leak water etc. at the time of the expansion-contraction is employ | adopted.
[0021]
【The invention's effect】
As described above, according to the present invention, the movable side connection portion can be rotated all around the central axis of the fixed side connection and can be rotated in the range of 180 degrees or more around the axis orthogonal to the central axis. Sudden bending piping for obstacles, etc. became possible. By adopting the universal joint of the present invention at both ends of the pipe, this can be a more complicated pipe mode. Furthermore, since the connection part of piping is movable, it was able to be set as the joint which has earthquake resistance and fluctuation resistance.
[Brief description of the drawings]
1 is an example of use of a universal joint according to an embodiment of the present invention. FIG. 2 is a top longitudinal sectional view of the universal joint. FIG. 3 is a partially cut bottom view of FIG.
DESCRIPTION OF SYMBOLS 1 Fixed side connection part 2 Joint body 3 Rotating shaft 4 Water stop cap 5 Movable side connection part

Claims (1)

配管の固定側接続部に対して、継手本体を介して、その中心軸回りに可動側接続部を360度回動可能に設けると共に、さらにこの可動側接続部を前記中心軸と直交する回動軸回りに180度以上回動可能に設けた配管のユニバーサルジョイントであって、前記継手本体は、前記固定側接続部に360度回動可能に嵌め込まれる回動部と、この回動部から2方向に分岐した二股部とからなり、当該二股部の片側には前記回動部と連通する流路を形成する一方、他方側は中実として、両者の間に前記流路と連通する内部流路を有した前記回動軸を介して前記可動側接続部を180度回動可能に設けたことを特徴とする配管のユニバーサルジョイント。With respect to the fixed-side connection portion of the pipe, the movable-side connection portion is provided to be able to rotate 360 degrees around the central axis via the joint body, and further, the movable-side connection portion is rotated perpendicular to the central axis. A universal joint of a pipe provided so as to be capable of rotating 180 degrees or more around an axis, wherein the joint main body is fitted with a rotating part fitted to the fixed side connecting part so as to be able to rotate 360 degrees, and from the rotating part, A bifurcated portion branched in a direction, and a flow path communicating with the rotating portion is formed on one side of the bifurcated portion, while the other side is solid, and an internal flow communicating with the flow path between the two is formed. A universal joint for piping, wherein the movable side connecting portion is provided so as to be rotatable by 180 degrees through the rotating shaft having a path.
JP2000320935A 2000-10-20 2000-10-20 Universal joint for piping Expired - Lifetime JP4490575B2 (en)

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JP4490575B2 true JP4490575B2 (en) 2010-06-30

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5176996B2 (en) * 2009-02-04 2013-04-03 株式会社ジェイテクト Toroidal continuously variable transmission
KR101102843B1 (en) * 2010-03-10 2012-01-05 최상순 Hose connector for hydraulic pump that axis center rotation and left-right tilt according to flexure direction of hose
CN108150747B (en) * 2017-11-28 2019-10-29 北京机械设备研究所 A kind of universal joint pipe fitting with fluid conveying and torque transmitting dual function

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