JP2002039456A - Joint member - Google Patents
Joint memberInfo
- Publication number
- JP2002039456A JP2002039456A JP2000228183A JP2000228183A JP2002039456A JP 2002039456 A JP2002039456 A JP 2002039456A JP 2000228183 A JP2000228183 A JP 2000228183A JP 2000228183 A JP2000228183 A JP 2000228183A JP 2002039456 A JP2002039456 A JP 2002039456A
- Authority
- JP
- Japan
- Prior art keywords
- pipe member
- contact
- pipe
- joint
- contact surface
- 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
Landscapes
- Power Steering Mechanism (AREA)
- Joints With Pressure Members (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、圧力流体が通され
る２つの管路を連通させるために使用される継手部材に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint member used to connect two pipes through which a pressure fluid flows.
【０００２】[0002]
【従来の技術】現在の世の中では、産業製品や車両など
輸送機器等の可動製品から、家屋設備におけるガス管，
水道管などのライフラインに至るまで、実に幅広い分野
で配管を使用しており、これによって、液体や気体を移
動している。2. Description of the Related Art In today's world, mobile products such as industrial products and vehicles such as vehicles are used for gas pipes in house facilities, and so on.
It uses plumbing in a very wide range of fields, up to lifelines such as water pipes, to move liquids and gases.
【０００３】このような液体や気体を移動することは、
例えば図６に示すように、車両の操舵作業を行うため
の、配管を使用した油圧アクチュエータ１００において
も行われている。この油圧アクチュエータ１００は、図
７に示すように、その油圧シリンダ１７０の内部に、図
示しないピストンを摺動自在に装着しており、このピス
トンで区切った図示しない両作動油室にそれぞれ連通し
た第１パイプ部材１２０のソケット１５０とエルボ１６
０を通して作動油を流入あるいは排出させ、これによ
り、油圧シリンダ１７０両側のアイ１８０、１９０の位
置制御を行うものである。[0003] Moving such liquids and gases is
For example, as shown in FIG. 6, this is also performed in a hydraulic actuator 100 using piping for performing a vehicle steering operation. As shown in FIG. 7, in the hydraulic actuator 100, a piston (not shown) is slidably mounted inside a hydraulic cylinder 170, and a second hydraulic oil chamber (not shown) divided by the piston communicates with each other. Socket 150 and elbow 16 of one pipe member 120
Hydraulic oil is caused to flow in or out through 0, thereby controlling the positions of the eyes 180 and 190 on both sides of the hydraulic cylinder 170.
【０００４】このような油圧アクチュエータ１００にお
いては、図８に示すように、油圧シリンダ１７０のシリ
ンダに沿わせた第１パイプ部材１２０と、これとは反対
側の第２パイプ部材１３０とを、継手部材１１０によっ
て連通させている。[0004] In such a hydraulic actuator 100, as shown in FIG. 8, a first pipe member 120 along a cylinder of a hydraulic cylinder 170 and a second pipe member 130 on the opposite side are connected by a joint. The members 110 communicate with each other.
【０００５】ここで、この継手部材１１０において、図
８に示すように、両者第１，第２パイプ部材１２０，１
３０が適正位置でかつ同一の軸線上に配置されていれ
ば、第１パイプ部材１２０の内端に形成した第１シール
面１２１の外周テーパ面と、第２パイプ部材１３０の内
端に形成した第２シール面１３１の内周テーパ面とが正
確に当接し合い、両第１，第２パイプ部材１２０，１３
０間の密閉性が確実に確保されるものである。[0005] Here, in this joint member 110, as shown in Fig. 8, both first and second pipe members 120, 1 are provided.
If 30 is located at an appropriate position and on the same axis, the outer peripheral taper surface of the first sealing surface 121 formed on the inner end of the first pipe member 120 and the inner tapered surface of the second pipe member 130 are formed. The inner peripheral taper surface of the second seal surface 131 abuts accurately, and both the first and second pipe members 120, 13
The sealing property between 0 is surely ensured.
【０００６】ところが、両第１，第２パイプ部材１２
０，１３０の溶接位置や、それらを固定するための図７
に示したブラケット２００の溶接位置に若干の狂いがあ
ったり、溶接歪み等が発生していると、両第１，第２パ
イプ部材１２０，１３０間に、図９に示すように、軸交
角θが生じることがある。このような場合には、ジョイ
ント１４０によって第１，第２パイプ部材１２０，１３
０同志を締め付けると、ジョイント１４０の内設鍔１４
１が第１パイプ部材１２０の外設溝１２２の側面に対し
て片当たりを起こすことになり、第１シール面１２１と
第２シール面１３１との完全な密着性が確保できなくな
るといった不具合が生じて隙間が生じてしまう。そし
て、これが油圧アクチュエータ１００であれば、油漏れ
発生を意味することになる訳である。However, the first and second pipe members 12
0, 130 welding position and FIG. 7 for fixing them
If the welding position of the bracket 200 shown in (1) is slightly deviated or welding distortion occurs, the shaft intersection angle θ between the first and second pipe members 120 and 130 as shown in FIG. May occur. In such a case, the first and second pipe members 120 and 13 are connected by the joint 140.
When the joints are tightened, the inner flange 14 of the joint 140 is
1 causes a partial contact with the side surface of the external groove 122 of the first pipe member 120, and a problem occurs that it is not possible to secure perfect adhesion between the first seal surface 121 and the second seal surface 131. Gaps occur. If this is the hydraulic actuator 100, this means that oil leakage has occurred.
【０００７】以上のことを換言すれば、ジョイント１１
０は、結合しようとする両パイプ部材１２０，１３０の
軸線が同一直線上にあるときは勿論のこと、同一直線上
になく軸交角θをもっている場合でも、確実に両パイプ
部材１２０，１３０間のシール部の密着性を満足するこ
とが理想である。In other words, the joint 11
0 means that the pipe members 120 and 130 can be reliably connected to each other even when the axes of the two pipe members 120 and 130 to be coupled are on the same straight line, and even when they are not on the same straight line but have an axis intersection angle θ. Ideally, the adhesion of the seal portion should be satisfied.
【０００８】そこで、本発明者は、継手部材１１０につ
いて、上記した不具合を改善するにはどうしたらよいか
について様々な検討を重ねた結果、本発明を完成したの
である。[0008] The inventor of the present invention has made various studies on the joint member 110 as to how to solve the above-mentioned problems, and as a result, completed the present invention.
【０００９】[0009]
【発明が解決しようとする課題】本発明は、以上のよう
な経緯に基づいてなされたもので、その解決しようとす
る課題は、結合しようとする両パイプ部材の軸線が、同
一直線上になく軸交角をもっている場合でも、確実に両
パイプ間の気密性を満足することである。SUMMARY OF THE INVENTION The present invention has been made on the basis of the above circumstances, and the problem to be solved is that the axes of both pipe members to be joined are not on the same straight line. Even if the shaft has an angle of intersection, the airtightness between both pipes must be satisfied.
【００１０】すなわち、まず請求項１の目的とするとこ
ろは、結合しようとする両パイプの軸線が同一直線上に
なく軸交角をもっている場合においても、第１パイプ部
材と第２パイプ部材との間の片当たりを防止することが
でき、結果的に密着性を満足することができて、液漏れ
のない継手部材を提供することにある。That is, the first object of the present invention is to provide a method for controlling the distance between the first pipe member and the second pipe member even when the axes of the two pipes to be connected are not on the same straight line but have an angle of intersection. It is an object of the present invention to provide a joint member which can prevent the partial contact of the joint member, and as a result, can satisfy the adhesiveness and does not leak the liquid.
【００１１】また、請求項２〜請求項４に係る発明の目
的とするところは、上記請求項１の発明と同様な目的が
達成できる他、第１パイプ部材と第２パイプ部材との間
の密着性をより一層満足することができて、液漏れのな
い継手部材を提供することにある。Further, the object of the invention according to claims 2 to 4 is to achieve the same object as in the invention of claim 1 described above, and also to provide an object between the first pipe member and the second pipe member. An object of the present invention is to provide a joint member that can further satisfy the adhesiveness and does not leak liquid.
【００１２】[0012]
【課題を解決するための手段】以上の課題を解決するた
めに、まず請求項１に係る発明の採った手段は、以下に
述べる発明の実施の形態の説明中において使用する符号
を付して説明すると、「圧力流体が通される２つの管路
を連通させるために使用され、一方の管路に接続される
第１パイプ部材１１と、この第１パイプ部材１１に当接
されて、他方の管路に接続される第２パイプ部材１２
と、内周面に設けた押さえ部材１５を介して第１パイプ
部材１１及び第２パイプ部材１２の各先端を互いに密着
させるジョイント１３とを備えた継手部材１０であっ
て、第１パイプ部材１１の先端に形成した第１シール面
１１ａと、第１パイプ部材１１の、第１シール面１１ａ
とは反対側になる部分に形成されて、押さえ部材１５に
当接する第１当接面１１ｂとを、同一の回転中心Ｐをも
つ円弧面としたことを特徴とする継手部材１０」であ
る。Means for Solving the Problems In order to solve the above-mentioned problems, first, means adopted by the invention according to claim 1 are attached with reference numerals used in the description of the embodiments of the invention described below. To explain, "a first pipe member 11 used to communicate two pipes through which a pressure fluid is passed and connected to one pipe, and Pipe member 12 connected to the pipeline of
And a joint 13 for bringing the respective ends of the first pipe member 11 and the second pipe member 12 into close contact with each other via a holding member 15 provided on the inner peripheral surface, wherein the first pipe member 11 The first sealing surface 11a formed at the tip of the first pipe member 11 and the first sealing surface 11a of the first pipe member 11
The joint member 10 "is characterized in that the joint member 10" is formed in a portion opposite to the first member, and the first contact surface 11b that contacts the pressing member 15 is an arc surface having the same rotation center P.
【００１３】すなわち、この請求項１に係る継手部材１
０は、図１〜図５に示すように、第１パイプ部材１１の
先端部に設けられて第２パイプ部材１２と接触する第１
シール面１１ａと、第１パイプ部材１１を第２パイプ部
材１２側に押圧する役目を果たすジョイント１３内に設
けた押さえ部材１５と接触する第１当接部１１ｂとを、
同一の回転中心Ｐをもつ円弧面形状を有したものとした
ものである。That is, the joint member 1 according to the first aspect.
1 is a first pipe member provided at the distal end of the first pipe member 11 and in contact with the second pipe member 12, as shown in FIGS.
A sealing surface 11a and a first contact portion 11b which comes into contact with a holding member 15 provided in a joint 13 serving to press the first pipe member 11 toward the second pipe member 12;
This has an arc surface shape having the same rotation center P.
【００１４】この継手部材１０では、第１パイプ部材１
１と第２パイプ部材１２とを結合するためにジョイント
１３を使用しているのであるが、このジョイント１３
は、例えば第２パイプ部材１２の外周に螺着してある。
このジョイント１３の螺着部とは反対側には、図３等に
示すように、プレート１６が一体化してあって、このプ
レート１６の内側には、押さえ部材１５がジョイント１
３と同軸上に装着し、固定してある。In this joint member 10, the first pipe member 1
The joint 13 is used to connect the first and second pipe members 12 to each other.
Is screwed to the outer periphery of the second pipe member 12, for example.
As shown in FIG. 3 and the like, a plate 16 is integrated with the joint 13 on the side opposite to the threaded portion, and a holding member 15 is provided inside the plate 16 with the joint 1.
3 is mounted coaxially and fixed.
【００１５】これによって、第１パイプ部材１１と第２
パイプ部材１２とを結合するために、ジョイント１３を
第２パイプ部材１２の端面に押し当てながら回転する
と、このジョイント１３が第２パイプ部材１２にねじ込
まれていくとともに、ジョイント１３に設けた押さえ部
材１５によって、第１パイプ部材１１が第２パイプ部材
１２側に押さえつけられるのである。Thus, the first pipe member 11 and the second
When the joint 13 is rotated while being pressed against the end face of the second pipe member 12 in order to join the pipe member 12, the joint 13 is screwed into the second pipe member 12 and the holding member provided on the joint 13 is rotated. By means of 15, the first pipe member 11 is pressed against the second pipe member 12 side.
【００１６】このとき、第１パイプ部材１１の軸線と第
２パイプ部材１２との軸線が同一直線上にある図２及び
図４に示すような場合は勿論、両軸線が、図３あるいは
図５に示すように、ある軸交角θをもっている状態で結
合していても、押さえ部材１５が、同一の回転中心Ｐを
もつ「円」にて、第１パイプ部材１１の第１当接面１１
ｂに円接触し、この第１パイプ部材１１を第２パイプ部
材１２側に押さえつけるのである。そして、この押しつ
け力によって、押さえ部材１５が、同一の回転中心Ｐを
もつ「円」にて、第１パイプ部材１１の第１当接面１１
ｂに片当たりすることなく、全周で接触し、結果的に第
１パイプ部材１１と第２パイプ部材１２との気密性が確
保されるのである。At this time, not only the case where the axis of the first pipe member 11 and the axis of the second pipe member 12 are on the same straight line as shown in FIGS. As shown in the figure, even if the connection is performed with a certain axis intersecting angle θ, the pressing member 15 can be connected to the first contact surface 11 of the first pipe member 11 by a “circle” having the same rotation center P.
b, and presses the first pipe member 11 against the second pipe member 12. The pressing force causes the pressing member 15 to move the first contact surface 11 of the first pipe member 11 into a “circle” having the same rotation center P.
The contact between the first pipe member 11 and the second pipe member 12 is ensured as a result without contacting the entire surface of the first pipe member 11 without contacting the b.
【００１７】一方、第１パイプ部材１１についてみてみ
ると、その軸線と第２パイプ部材１２との軸線が同一直
線上にある図２及び図４に示すような場合は勿論、両軸
線が、図３あるいは図５に示すように、ある軸交角θを
もっている状態で結合していても、第１パイプ部材１１
の第１シール面１１ａが、同一の回転中心Ｐをもつ
「円」にて第２パイプ部材１２の内端と接触することに
なる。その結果、第１パイプ部材１１と第２パイプ部材
１２との間の密着性が確保されて、気密性を満足した継
手部材１０が実現されるのである。On the other hand, when the first pipe member 11 is viewed, the axis of the first pipe member 11 and the axis of the second pipe member 12 are on the same straight line as shown in FIGS. As shown in FIG. 3 or FIG. 5, even if the first pipe member 11
The first seal surface 11a comes into contact with the inner end of the second pipe member 12 at a “circle” having the same rotation center P. As a result, the adhesion between the first pipe member 11 and the second pipe member 12 is ensured, and the joint member 10 that satisfies the airtightness is realized.
【００１８】換言すれば、全ての部材を同一直線上に配
置した継手部材１０に対して、第１パイプ部材１１だけ
を軸交角θだけ回動したとしても、第１パイプ部材１１
の第１シール面１１ａと第１当接面１１ｂとは、同一の
回転中心Ｐをもつ円弧面形状をしていることにより、第
１パイプ部材１１は、第２パイプ部材１２およびジョイ
ント１３内の押さえ部材１５とで挟まれた接触状態を変
えることなく、回転中心Ｐ回りに軸交角θ分だけ回転し
得る訳である。In other words, even if only the first pipe member 11 is rotated by the axis intersection angle θ with respect to the joint member 10 in which all members are arranged on the same straight line, the first pipe member 11
Since the first seal surface 11a and the first contact surface 11b have a circular arc shape having the same rotation center P, the first pipe member 11 That is, it is possible to rotate around the rotation center P by the axis intersection angle θ without changing the contact state sandwiched between the pressing members 15.
【００１９】すなわち、第１パイプ部材１１の第１シー
ル面１１ａと第１当接面１１ｂとは、同一の回転中心Ｐ
をもった円弧面であると同時に、その回転中心Ｐを中心
に回転することから、それらと接触する第２パイプ部材
１２と押さえ部材１５との接触位置は変わるものの、回
転中心Ｐから接触位置までの距離は一切変化することな
く、第２パイプ部材１２と押さえ部材１５との両方の接
触面上を滑るだけである。That is, the first seal surface 11a and the first contact surface 11b of the first pipe member 11
At the same time, the contact surface between the second pipe member 12 and the holding member 15 that comes into contact with the arc surface changes from the rotation center P to the contact position. Does not change at all, but merely slides on the contact surfaces of both the second pipe member 12 and the holding member 15.
【００２０】ここで、この請求項１で使用する第１パイ
プ部材１１の第１シール面１１ａと第１当接面１１ｂと
は、それぞれの半径寸法が異なっていても構わないが、
同一の回転中心Ｐをもつ円弧面形状でなければならない
ものである。なぜなら、第１シール面１１ａと第１当接
面１１ｂとの円弧面は、両方とも回転中心Ｐを通る第１
パイプ部材１１の軸線を中心とした対称形状とする必要
があるからである。Here, the first seal surface 11a and the first contact surface 11b of the first pipe member 11 used in the first aspect may have different radial dimensions,
It must have an arc surface shape having the same rotation center P. The reason is that the arc surfaces of the first sealing surface 11a and the first contact surface 11b are both the first arc surfaces passing through the rotation center P.
This is because it is necessary to have a symmetrical shape about the axis of the pipe member 11.
【００２１】よって、上記した第１パイプ部材１１と第
２パイプ部材１２とをジョイント１３で結合するため
に、これら全ての軸線を同一直線上に配置した場合は勿
論、これら各部材に設けている第１パイプ部材１１の第
１シール面１１ａと、これに接触する第２パイプ部材１
２側の面、および、第１パイプ部材１１の第１当接面１
１ｂと、これに接触する押さえ部材１５側の面の全て
が、同一直線上に配置しているとともに、これらの全て
は、同一の軸線に対して対称形状をしているものであ
る。Therefore, in order to connect the first pipe member 11 and the second pipe member 12 with the joint 13, all the axes are arranged on the same straight line, and of course, they are provided on these members. The first sealing surface 11a of the first pipe member 11 and the second pipe member 1
2 side surface and first contact surface 1 of first pipe member 11
1b and all of the surfaces on the side of the pressing member 15 which come into contact with the same are arranged on the same straight line, and all of them are symmetrical with respect to the same axis.
【００２２】従って、継手部材１０においてシール部，
押圧部の役目を果たす、それぞれ一対の接触面のうち、
内側となる第１シール面１１ａと第１当接面１１ｂとの
形状を、上記したような同一の円弧面とすることで、結
合しようとする第１，第２パイプ部材１１，１２間で軸
交角θをもった場合においても、第１パイプ部材１１と
第２パイプ部材１２との軸線を一直線上に配置した場合
と同等の気密性を保証でき得るものである。Therefore, in the joint member 10, the sealing portion,
Of the pair of contact surfaces, each serving as a pressing portion,
By setting the shape of the first sealing surface 11a and the first contact surface 11b on the inner side to be the same arcuate surface as described above, the shaft between the first and second pipe members 11 and 12 to be connected is formed. Even with the intersection angle θ, the same airtightness as when the axes of the first pipe member 11 and the second pipe member 12 are arranged on a straight line can be guaranteed.
【００２３】また、上記課題を解決するために、請求項
２に係る発明の採った手段は、上記請求項１に係る継手
部材１０について、「第１シール面１１ａと第１当接面
１１ｂとを真円凸面とし、第１シール面１１ａが当接す
ることになる第２パイプ部材１２側の第２シール面１２
ａと、第１当接面１１ｂに当接する押さえ部材１５側の
第２当接面１５ａとを円錐テーパ面としたこと」であ
る。Further, in order to solve the above-mentioned problem, the means adopted by the invention according to claim 2 is that the joint member 10 according to claim 1 is described as “the first sealing surface 11 a and the first contact surface 11 b Is a perfect circular convex surface, and the second seal surface 12 on the second pipe member 12 side with which the first seal surface 11a comes into contact.
a and the second contact surface 15a on the side of the holding member 15 that contacts the first contact surface 11b are conical tapered surfaces. "
【００２４】すなわち、この請求項２に係る継手部材１
０は、結合しようとする第１，第２パイプ部材１１，１
２との接触部で構成するシール面、および、第１パイプ
部材１１，押さえ部材１５との接触部で構成する当接面
のうち、それぞれ接触した際に内側となる第１パイプ部
材１１の第１シール面１１ａと第１当接面１１ｂとを、
球面の一部を切り取った真円の凸面形状を有したものと
し、これらと反対に外側となる第２パイプ部材１２の第
２シール面１２ａと押さえ部材１５の第２当接面１５ａ
とを、円錐状のテーパ面を有したものとしたものであ
る。That is, the joint member 1 according to the second aspect.
0 is the first and second pipe members 11 and 1 to be connected.
Of the sealing surface formed by the contact portion with the second member 2 and the contact surface formed by the contact portion with the first pipe member 11 and the pressing member 15, the first pipe member 11 that is inward when it comes into contact with each other. The first sealing surface 11a and the first contact surface 11b
It has a convex shape of a perfect circle obtained by cutting off a part of the spherical surface, and on the contrary, the second sealing surface 12a of the second pipe member 12 and the second contact surface 15a of the holding member 15 which are located outside.
Have a conical tapered surface.
【００２５】このように、継手部材１０を構成している
各部材の摺動部形状を、上記したような形状とすること
によって、これら第１，第２パイプ部材１１，１２を結
合するとき、互いの軸線が同一直線上にならず、軸交角
θを生じるような場合においても、第１パイプ部材１１
の第１シール面１１ａと第１当接面１１ｂとがそれらの
回転中心Ｐを中心として回動することで、この回転中心
Ｐから第１パイプ部材１１の外側に配置する第２シール
面１２ａおよび第２当接面１５ａとの接触位置までの距
離が一切変化することはない。As described above, when the sliding portions of the members constituting the joint member 10 are formed as described above, when the first and second pipe members 11 and 12 are connected to each other, Even in a case where the axes do not coincide with each other and the axis intersection angle θ is generated, the first pipe member 11
The first seal surface 11a and the first contact surface 11b rotate about their rotation center P, so that the second seal surface 12a and the second seal surface 12a arranged outside the first pipe member 11 from the rotation center P The distance to the contact position with the second contact surface 15a does not change at all.
【００２６】換言すれば、第１，第２シール面１１ａ，
１２ａとの接触部、および、第１，第２当接面１１ｂ，
１５ａとの接触部で、第１，第２パイプ部材１１，１２
の軸線が同一直線上であるときと同様な、結合面での線
接触を実現し、それぞれが１つの円上で密着しているも
のである。In other words, the first and second sealing surfaces 11a, 11a,
12a, and the first and second contact surfaces 11b,
15a, the first and second pipe members 11, 12
Are realized on the joint surface in the same manner as when the axes are on the same straight line, and each is in close contact on one circle.
【００２７】この結果、継手部材１０を構成している第
１パイプ部材１１と第２パイプ部材１２との軸線が、軸
交角θをもった状態で結合したとしても、第１パイプ部
材１１と第２パイプ部材１２との間での確実な気密性と
密着性を実現できるものである。As a result, even if the axes of the first pipe member 11 and the second pipe member 12 constituting the joint member 10 are connected with an axis intersection angle θ, the first pipe member 11 and the second Thus, reliable airtightness and adhesion between the two pipe members 12 can be realized.
【００２８】次に、第１パイプ部材１１と第２パイプ部
材１２との間の回動可能範囲について述べる。真円の凸
面形状である第１パイプ部材１１の第１シール面１１ａ
および第１当接面１１ｂとそれぞれ対向する、第２パイ
プ部材１２の第２シール面１２ａと第２当接面１５ａと
が、円錐テーパ面を有していることは上記した通りであ
るが、これら第２シール面１２ａと第２当接面１５ａ
は、それぞれ第１シール１１ａ，第１当接面１１ｂと接
触した際、これらシール面，当接面の真円凸面に倣うよ
うな傾斜をもった円錐テーパ面を有しているものであ
る。そして、この円錐テーパ面の傾斜度合い、すなわ
ち、接触位置によって、第２パイプ部材１２に対する第
１パイプ部材１１の回動可能範囲の大小が左右されるこ
とになる。よって、極力この回動可能範囲を大きくする
には、第１シール面１１ａと第２シール面１２ａ、およ
び、第１当接面１１ｂと第２当接面１５ａの接触位置関
係は、第１，第２パイプ部材１１，１２の軸線同士が同
一直線上にある状態で、相対するこれらの面同士が互い
に中心付近で接触するように設定すればよいことにな
る。Next, the rotatable range between the first pipe member 11 and the second pipe member 12 will be described. The first seal surface 11a of the first pipe member 11 having a perfect circular convex shape
As described above, the second seal surface 12a and the second contact surface 15a of the second pipe member 12, which face the first contact surface 11b and the first contact surface 11b, respectively, have a conical tapered surface. The second sealing surface 12a and the second contact surface 15a
Has a conical tapered surface having an inclination so as to follow the perfect circular convex surface of the seal surface and the contact surface when they come into contact with the first seal 11a and the first contact surface 11b, respectively. The degree of inclination of the conical taper surface, that is, the contact position, determines the magnitude of the rotatable range of the first pipe member 11 with respect to the second pipe member 12. Therefore, in order to maximize this rotatable range, the contact positions of the first seal surface 11a and the second seal surface 12a, and the first contact surface 11b and the second contact surface 15a are determined by the first and second contact surfaces. In a state where the axes of the second pipe members 11 and 12 are on the same straight line, it is only necessary to set such that the opposing surfaces contact each other near the center.
【００２９】従って、この請求項２の継手部材１０は、
たとえ結合しようとする第１，第２パイプ部材１１，１
２との軸線が軸交角θをもった状態で結合しても、第１
パイプ部材１１と押さえ部材１５間、および、第１パイ
プ部材１１と第２パイプ部材１２間のそれぞれの接触面
における密着性，気密性を確実なものとし、第１パイプ
部材１１，第２パイプ部材１２間での気密性を満足する
といった上記請求項１と同様な作用を、第１シール面１
１ａと第１当接面１１ｂとの真円凸面と、第２シール面
１２ａと第２当接面１５ａとの円錐テーパ面という具体
的な形状によって、達成でき得るものとなっているので
ある。Therefore, the joint member 10 of the second aspect is
Even if the first and second pipe members 11, 1 to be joined are
Even if the axis with 2 is connected with the axis intersection angle θ, the first
The first and second pipe members 11 and the second pipe member are made to ensure close contact and airtightness at respective contact surfaces between the pipe member 11 and the holding member 15 and between the first pipe member 11 and the second pipe member 12. The first sealing surface 1 has the same effect as that of the first embodiment, such as satisfying the airtightness between the first sealing surface 1 and the second sealing surface 1.
This can be achieved by a specific shape of a perfect circular convex surface between the first contact surface 1a and the first contact surface 11b and a conical taper surface between the second seal surface 12a and the second contact surface 15a.
【００３０】続いて、上記課題を解決するために、請求
項３に係る発明の採った手段は、上記請求項１に係る継
手部材１０について、「第１シール面１１ａと第１当接
面１１ｂとを真円凸面とし、第１シール面１１ａが当接
することになる第２パイプ部材１２側の第２シール面１
２ａと、第１当接面１１ｂに当接する押さえ部材１５側
の第２当接面１５ａとを真円凹面としたこと」である。Subsequently, in order to solve the above-mentioned problem, the means adopted by the invention according to claim 3 is that the joint member 10 according to claim 1 is described as “a first seal surface 11a and a first contact surface 11b. Is a perfect circular convex surface, and the second sealing surface 1 on the second pipe member 12 side with which the first sealing surface 11a comes into contact.
2a and the second contact surface 15a on the side of the holding member 15 that contacts the first contact surface 11b are perfectly circular concave surfaces. "
【００３１】すなわち、この請求項３に係る継手部材１
０は、結合しようとする第１，第２パイプ部材１１，１
２との接触部で構成する間シール面、および、第１パイ
プ部材１１，押さえ部材１５との接触面で構成する当接
面のうち、それぞれ接触した際に内側となる第１パイプ
部材１１の第１シール面１１ａと第１当接面１１ｂと
を、球面の一部を切り取った真円の凸面を有したものと
し、これらと反対に外側となる第２パイプ部材１２の第
２シール面１２ａと押さえ部材１５の第２当接面１５ａ
とを、球面の一部を切り取った真円の凹面を有したもの
としたものである。That is, the joint member 1 according to the third aspect.
0 is the first and second pipe members 11 and 1 to be connected.
Of the first pipe member 11, which is inside when it comes into contact with each other, between the sealing surface formed by the contact portion with the second member 2 and the contact surface formed by the contact surface with the first pipe member 11 and the holding member 15. The first seal surface 11a and the first contact surface 11b have a perfect circular convex surface obtained by cutting a part of a spherical surface, and the second seal surface 12a of the second pipe member 12 which is opposite to the outer surface. And the second contact surface 15a of the holding member 15
Have a perfect circular concave surface obtained by cutting a part of a spherical surface.
【００３２】具体的には、このような真円の凸面を有し
ている第１パイプ部材１１の第１シール面１１ａおよび
第１当接部１１ｂと接触することで気密性，密着性を確
保する、第２パイプ部材１２の第２シール面１２ａおよ
びジョイント１３の内周に設けた押さえ部材１５の第２
当接面１５ａは、それぞれ第１シール面１１ａおよび第
１当接面１１ｂの曲率と同等以上の真円の凹面としたも
のである。Specifically, airtightness and adhesion are ensured by contacting the first sealing surface 11a and the first contact portion 11b of the first pipe member 11 having such a perfect circular convex surface. The second sealing surface 12a of the second pipe member 12 and the second holding member 15 provided on the inner periphery of the joint 13
The contact surface 15a is a perfect circular concave surface having a curvature equal to or greater than the curvature of the first seal surface 11a and the first contact surface 11b.
【００３３】このように、継手部材１０を構成している
各部材の接触部形状を、上記したような形状にすること
によって、これら第１，第２パイプ部材１１，１２を結
合するとき、互いの軸線が同一直線上にならず、軸交角
θを生じるような場合においても、第１パイプ部材１１
側の第１シール面１１ａと第１当接面１１ｂとが、この
外側に配置した第２シール面１２ａと第２当接面１５ａ
とによってガイドされる形で、回転中心Ｐを中心として
回動することで、この回転中心Ｐから第２シール面１２
ａおよび第２当接面１５ａとの接触位置までの距離が一
切変化することはない。As described above, by making the shape of the contact portion of each member constituting the joint member 10 into the above-described shape, when the first and second pipe members 11 and 12 are connected to each other, Of the first pipe member 11 even when the axes of
The first sealing surface 11a and the first contact surface 11b on the side are separated from the second sealing surface 12a and the second contact surface 15a disposed on the outside.
Is rotated about the rotation center P in a form guided by the second seal surface 12 from the rotation center P.
a and the distance to the contact position with the second contact surface 15a does not change at all.
【００３４】そして、この第２パイプ部材１２に設けた
第２シール面１２ａと、押さえ部材１５に設けた第２当
接面１５ａとの真円の凹面形状の曲率寸法は、第１パイ
プ部材１１に設けた第１シール面１１ａと第１当接面１
１ｂとの真円の凸面形状の曲率寸法と、同一であること
が望ましい。なぜならば、これらの接触する当接面同士
の曲率寸法を一致させることで、接触面が円弧面の一部
といった面接触になり、結合しようとする第１，第２パ
イプ部材１１，１５間の軸線が一直線上か軸交角θをも
っているかに拘わらず、気密性，密着性が有利な方向に
働くからである。The curvature of the circular concave shape between the second sealing surface 12a provided on the second pipe member 12 and the second contact surface 15a provided on the holding member 15 is the same as that of the first pipe member 11. Seal surface 11a and first contact surface 1 provided on
It is desirable that the curvature dimension of the convex shape of the perfect circle with 1b be the same. This is because, by matching the curvature dimensions of the contact surfaces that come into contact with each other, the contact surface becomes a surface contact such as a part of an arc surface, and the first and second pipe members 11 and 15 to be coupled are connected. This is because airtightness and adhesion work in advantageous directions regardless of whether the axis is on a straight line or has an axis intersection angle θ.
【００３５】すなわち、上記した接触面での曲率関係
は、接触した際に内側となる第１パイプ部材１１の第１
シール面１１ａや第１当接面１１ｂより、外側となる第
２パイプ部材１２の第２シール面１２ａや押さえ部材１
５の第２当接面１５ａの方が大きいのであれば、第１パ
イプ部材１１，第２パイプ部材１９間の軸線が一直線に
なる場合だけでなく、軸交角θが発生するような場合に
おいても、前記した請求項２の接触条件と同様に、線接
触での気密性，密着性を実現できる訳である。That is, the above-mentioned curvature relationship on the contact surface is determined by the first pipe member 11 which is located inside when it comes into contact with the first pipe member 11.
The second sealing surface 12a and the pressing member 1 of the second pipe member 12 outside the sealing surface 11a and the first contact surface 11b.
If the second contact surface 15a of 5 is larger, not only when the axis between the first pipe member 11 and the second pipe member 19 becomes straight, but also when the axis intersection angle θ occurs. In a manner similar to the contact condition of the second aspect, airtightness and adhesion in line contact can be realized.
【００３６】しかし、これとは反対に、内側となる第１
パイプ部材１１の第１シール面１１ａや第１当接面１１
ｂより、外側となる第２シール面１２ａや第２当接面１
５ａが小さいような曲率条件では、それぞれの接触状態
が成立しないだけでなく、外側の第２パイプ部材１２に
対して内側の第１パイプ部材１１側の軸線が一直線上に
なる場合はおろか、第１パイプ部材１１が回動すること
で軸交角θが発生する場合のいずれにおいても、気密
性，密着性が確保できないことは言うまでもない。However, on the contrary, the first inside
The first sealing surface 11a and the first contact surface 11 of the pipe member 11
b, the second sealing surface 12a and the second contact surface 1
Under the curvature condition where 5a is small, not only the respective contact states are not established, but also the case where the axis of the inner first pipe member 11 with respect to the outer second pipe member 12 is aligned, It goes without saying that airtightness and adhesion cannot be ensured in any case where the axis intersection angle θ is generated by rotation of one pipe member 11.
【００３７】従って、この請求項３の継手部材１０は、
たとえ結合しようとする第１，第２パイプ部材１１，１
２の軸線が軸交角θをもった状態で結合しても、第１パ
イプ部材１１と押さえ部材１５間、および、第１パイプ
部材１１と第２パイプ部材１２間のそれぞれの接触面に
おける密着性，気密性を前記した請求項２の場合よりも
確実なものとし、第１パイプ部材１１，第２パイプ部材
１２間での気密性を満足するといった上記請求項１と同
様な作用を、第１シール面１１ａと第１当接面１１ｂと
の真円凸面と、第２シール面１９ａと第２当接面１８ａ
との真円凹面という具体的な形状によって、達成でき得
るものとなっているのである。Therefore, the joint member 10 of the third aspect is
Even if the first and second pipe members 11, 1 to be joined are
Even when the two axes are connected to each other with the axis intersecting angle θ, the adhesion between the first pipe member 11 and the pressing member 15 and the contact surface between the first pipe member 11 and the second pipe member 12 can be improved. The same effect as in the first embodiment, that is, the airtightness is more reliable than that of the second embodiment, and the airtightness between the first pipe member 11 and the second pipe member 12 is satisfied. A perfect circular convex surface between the seal surface 11a and the first contact surface 11b, and a second seal surface 19a and a second contact surface 18a
It can be achieved by the specific shape of the perfect circular concave surface.
【００３８】さらに、上記課題を解決するために、請求
項４に係る発明の採った手段は、上記請求項１に係る継
手部材１０について、「第１シール面１１ａと第１当接
面１１ｂとを真円凸面とし、第１シール面１１ａが当接
することになる第２パイプ部材１２側の第２シール面１
２ａ、または第１当接面１１ｂに当接する押さえ部材１
５側の第２当接面１５ａのいずれか一方を円錐テーパ面
とし、他方の第２当接面１５ａまたは第２シール面１２
ａを真円凹面としたこと」である。Further, in order to solve the above-mentioned problem, a means adopted by the invention according to claim 4 is that the joint member 10 according to claim 1 is described as “the first seal surface 11 a and the first contact surface 11 b Is a perfect circular convex surface, and the second sealing surface 1 on the second pipe member 12 side with which the first sealing surface 11a comes into contact.
2a or holding member 1 contacting first contact surface 11b
One of the second contact surfaces 15a on the fifth side is a conical tapered surface, and the other second contact surface 15a or the second seal surface 12 is formed.
a is a perfect circular concave surface. "
【００３９】すなわち、この請求項４に係る継手部材１
０は、具体的に図示しないが、結合しようとする第１，
第２パイプ部材１１，１２との接触面で構成するシール
面、および、第１パイプ部材１１，押さえ部材１５との
接触面で構成する当接面のうち、それぞれ接触した際に
内側となる第１パイプ部材１１の第１シール面１１ａと
第１当接面１１ｂとを、球面の一部を切り取った真円の
凸面を形成しており、これらと反対に外側となる第２パ
イプ部材１２の第２シール面１２ａと押さえ部材１５の
第２当接面１５ａとを、それぞれ円錐状のテーパ面ある
いは球面の一部を切り取った真円の凹面のどちらか一方
ずつを有したものとしたものである。That is, the joint member 1 according to the fourth aspect.
Although 0 is not specifically shown, the first 0 to be combined is
Of the sealing surfaces formed by the contact surfaces with the second pipe members 11 and 12 and the contact surfaces formed by the contact surfaces with the first pipe member 11 and the holding member 15, the second one which is inside when it comes into contact with each other. The first sealing surface 11a and the first contact surface 11b of the one pipe member 11 form a perfect circular convex surface obtained by cutting a part of the spherical surface, and the second sealing member 11 has The second sealing surface 12a and the second contact surface 15a of the pressing member 15 each have either a conical tapered surface or a perfect circular concave surface obtained by cutting a part of a spherical surface. is there.
【００４０】上記した請求項２および請求項３で、第１
パイプ部材１１の第１シール面１１ａと第１当接面１１
ｂとが真円の凸面であり、また第１パイプ部材１１を保
持する第２パイプ部材１２側の第２シール面１２ａおよ
びジョイント１３の内周に設けた押さえ部材１５の第２
当接面１５ａが、双方とも円錐状のテーパ面又は真円の
凹面であることによって、第１，第２パイプ部材１１，
１２の軸線が同一直線上にならず、軸交角θを生じるよ
うな場合においても、第１パイプ部材１１側の回転中心
Ｐを中心としたスムーズな回動と、第１パイプ部材１
１，第２パイプ部材１２間での確実な気密性，密着性が
実現できるということは説明した。In the second and third aspects of the present invention, the first
First sealing surface 11a and first contact surface 11 of pipe member 11
b is a perfect circular convex surface, and the second sealing surface 12a of the second pipe member 12 holding the first pipe member 11 and the second pressing member 15 provided on the inner periphery of the joint 13
Since the contact surface 15a is a conical tapered surface or a perfect circular concave surface, the first and second pipe members 11,
12, even if the axes of 12 do not coincide with each other and the axis intersecting angle θ occurs, smooth rotation about the rotation center P on the first pipe member 11 side and the first pipe member 1
It has been described that reliable airtightness and adhesion between the first and second pipe members 12 can be realized.
【００４１】しかし、何も、第２シール面１１ａおよび
第２当接面１５ａが、円錐状のテーパ面同士、又は真円
の凹面同士のように、必ずしも同種の形状である必要は
なく、それぞれが円錐状のテーパ面と真円の凹面、又は
これと反対の真円の凹面と円錐状のテーパ面といった形
状の組み合わせでってもよいというものである。However, in any case, the second sealing surface 11a and the second contact surface 15a do not necessarily have to have the same type of shape, such as conical tapered surfaces or true circular concave surfaces. May be a combination of shapes such as a conical tapered surface and a perfect circular concave surface, or an opposite perfect circular concave surface and a conical tapered surface.
【００４２】従って、この請求項４の継手部材１０は、
たとえ結合しようとする第１，第２パイプ部材１１，１
２との軸線が軸交角θをもった状態で結合しても、第１
パイプ部材１１と押さえ部材１５間、および、第１パイ
プ部材１１と第２パイプ部材１２間のそれぞれの接触面
における密着性，気密性を確実なものとし、第パイプ部
材１１，第２パイプ部材１２間での気密性を満足すると
いった上記請求項１と同様な作用を、第１シール面１１
ａと第１当接面１１ｂとの真円凸面と、第２シール面１
２ａと第２当接面１５ａとの円錐テーパ面あるいは真円
凹面のいずれか一方ずつという具体的な形状によって、
達成でき得るものとなっているのである。Therefore, the joint member 10 of the fourth aspect is
Even if the first and second pipe members 11, 1 to be joined are
Even if the axis with 2 is connected with the axis intersection angle θ, the first
Adhesion and airtightness at respective contact surfaces between the pipe member 11 and the holding member 15 and between the first pipe member 11 and the second pipe member 12 are ensured, and the first pipe member 11 and the second pipe member 12 are secured. The same effect as in the above-mentioned claim 1 that the airtightness between the first and second sealing surfaces is satisfied,
a and the first sealing surface 11b, and the second sealing surface 1
The specific shape of either the conical tapered surface or the perfect circular concave surface of the second contact surface 15a and the second contact surface 15a,
It is something that can be achieved.
【００４３】[0043]
【発明の実施の形態】以上のように構成した各請求項の
発明について図面に示した実施の形態である継手部材１
０について以下に説明する。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view showing a joint member according to an embodiment of the present invention;
0 will be described below.
【００４４】図１は、この発明のシート面および当接面
を組み込んだ継手部材１０の全体図であり、図２および
図３は、この継手部材の主要な部分のみを拡大した第１
実施例の断面図である。FIG. 1 is an overall view of a joint member 10 incorporating a seat surface and an abutment surface of the present invention. FIGS. 2 and 3 show a first enlarged view of only a main part of the joint member.
It is sectional drawing of an Example.
【００４５】まず、第１パイプ部材１１は、この端面に
第１シール面１１ａを設けるとともに、その少し後方に
第１当接面１１ｂが設けてある。そして、これら第１シ
ール面１１ａと第１当接面１１ｂとは、両方とも真円の
球面の一部を取り出した凸面形状をしているとともに、
これらの球面形状は同一の回転中心Ｐを持っているもの
である。First, the first pipe member 11 is provided with a first sealing surface 11a on this end surface and a first contact surface 11b slightly behind the first sealing surface 11a. The first sealing surface 11a and the first contact surface 11b both have a convex shape obtained by extracting a part of a perfect spherical surface.
These spherical shapes have the same rotation center P.
【００４６】また、第１シール面１１ａと第１当接面１
１ｂとの外周側には、第１パイプ部材１１と後述する第
２パイプ部材１２とを結合するためのジョイント１３が
装着してある。このジョイント１３の母材となるケース
１４には、ジョイント１３と第１パイプ部材１１と第２
パイプ部材１２とで継手部材１０を構成した際、第２パ
イプ部材１２側となる内周に、ケース１４と同軸の雌ね
じ部１４ｂが設けてあり、これは第１パイプ部材１１に
設けてある第１当接面１１ｂの外径寸法より小さい内径
寸法となっている。そして、ジョイント１３は、第１パ
イプ部材１１の先端部分で回転自在に保持しているよう
な構造とするために、第１パイプ部材１１の端面の外周
に、第１シール面１１ａ側からケース１４を装着した
後、第２当接面１１ｂを挟み込んだ形となるように、ケ
ース１４と同軸の内周面１４ａに、第１当接面１１ｂ側
から押さえ部材１５を装着して固定してある。The first sealing surface 11a and the first contact surface 1
A joint 13 for connecting the first pipe member 11 and a second pipe member 12 described later is mounted on the outer peripheral side of the first pipe member 1b. The joint 13, the first pipe member 11, and the second
When the joint member 10 is constituted by the pipe member 12, a female screw portion 14 b coaxial with the case 14 is provided on the inner periphery on the second pipe member 12 side, and the female screw portion 14 b is provided on the first pipe member 11. The inner diameter is smaller than the outer diameter of the one contact surface 11b. The joint 13 is provided on the outer periphery of the end surface of the first pipe member 11 from the first seal surface 11a side so that the joint 14 is rotatably held at the distal end portion of the first pipe member 11. After mounting, the holding member 15 is mounted and fixed from the first contact surface 11b side to the inner peripheral surface 14a coaxial with the case 14 so as to sandwich the second contact surface 11b. .
【００４７】押さえ部材１５の、ケース１４からの抜け
止め構造は、押さえ部材１５を装着した側からプレート
１６を装着し、これをケース１４に対して外周側の溶接
部ａで溶接することで実現しているものである。これ
は、何も溶接に限定されるものではなく、ねじ込みや圧
入等、ケース１４とプレート１６とが固着関係になる方
法であれば問題ないものである。The retaining structure of the holding member 15 from the case 14 is realized by mounting a plate 16 from the side where the holding member 15 is mounted and welding the plate 16 to the case 14 at a welded portion a on the outer peripheral side. Is what you are doing. This is not limited to welding, and there is no problem as long as the case 14 and the plate 16 have a fixed relation, such as screwing or press fitting.
【００４８】そして、この押さえ部材１５について、上
記した雌ねじ部１４ｂと第１当接面１１ｂとの寸法関係
と同様に、第１当接面１１ｂ部の外径寸法より小さい内
径寸法となっていることで、ジョイント１３から第１パ
イプ部材１１が抜けるのを防止している。すなわち、第
１パイプ部材１１の第１当接面１１ｂ部は、ジョイント
１３を構成するケース１４の雌ねじ部１４ｂと、押さえ
部材１５の打２当接面１５ａとで挟み込むことで、第１
パイプ部材１１の先端部からのジョイント１３の抜け止
め構造を実現しているものである。The pressing member 15 has an inner diameter smaller than the outer diameter of the first contact surface 11b, similarly to the dimensional relationship between the female screw portion 14b and the first contact surface 11b. This prevents the first pipe member 11 from coming off from the joint 13. That is, the first contact surface 11 b of the first pipe member 11 is sandwiched between the female screw portion 14 b of the case 14 forming the joint 13 and the hitting 2 contact surface 15 a of the holding member 15, whereby the first contact surface 11 b is formed.
This realizes a structure for preventing the joint 13 from coming off from the tip of the pipe member 11.
【００４９】ジョイント１３の押さえ部材１５には、上
記したような構成で第１パイプ部材１１と組み合った
際、第１パイプ部材１１の第１当接面１１ｂと向き合う
位置に、内周面１４ａと同軸の第２当接面１５ａが設け
てある。そして、第２当接面１５ａと第１当接面１１ｂ
とは、同軸状態で当接した際、径方向で重なった部分の
互いに中心付近で接触するような傾斜面をもった円錐テ
ーパ面を、第２当接面１５ａが有しているものである。The holding member 15 of the joint 13 has an inner peripheral surface 14a at a position facing the first contact surface 11b of the first pipe member 11 when the first pipe member 11 is assembled in the above-described configuration. A coaxial second contact surface 15a is provided. Then, the second contact surface 15a and the first contact surface 11b
Means that the second abutment surface 15a has a conical tapered surface having an inclined surface such that, when abutting coaxially, the portions overlapping in the radial direction contact each other near the center. .
【００５０】また、第２パイプ部材１２は、この端面に
第２シール面１２ａを設けるとともに、この外周にはこ
の第２シール面１２ａと同軸の雄ねじ部１２ｂが設けて
ある。この雄ねじ部１２ｂは、第１パイプ部材１１の外
周に回転自在に装着したジョイント１３の雌ねじ部１４
ｂと螺着することで、第１パイプ部材１１と第２パイプ
部材１２とを結合するものである。また、このように、
第１パイプ部材１１と第２パイプ部材１２とを互いに同
軸上に配置して結合することで、それぞれに設けた第１
シール面１１ａと第２シール面１２ａとが同軸状態で当
接する訳であるが、このとき径方向で重なった部分の互
いに中心付近で接触するような傾斜面をもった円錐テー
パ面を、第２シール面１２ａが有しているものである。The second pipe member 12 has a second sealing surface 12a on its end face, and an external thread 12b coaxial with the second sealing surface 12a on its outer periphery. The male screw portion 12b is provided with a female screw portion 14 of a joint 13 rotatably mounted on the outer periphery of the first pipe member 11.
The first pipe member 11 and the second pipe member 12 are connected by screwing with b. Also, like this:
The first pipe member 11 and the second pipe member 12 are coaxially arranged and connected to each other, so that the first
The sealing surface 11a and the second sealing surface 12a abut in the same coaxial state. At this time, a conical tapered surface having an inclined surface such that the radially overlapping portions come into contact with each other near the center is formed. It is provided on the sealing surface 12a.
【００５１】次に、このように構成している継手部材１
０の結合状態を場合ごとに分けて、以下に説明する。Next, the joint member 1 having the above-described structure will be described.
The connection state of 0 will be described below for each case.
【００５２】継手部材１０の結合状態は、以下の２通り
が想定できる。すなわち、結合しようとする第１パイプ
部材１１と第２パイプ部材１２とは、互いの軸線が同一
直線上で結合することが可能な場合と、これが不可能な
場合である。これは、第１，第２パイプ部材１１，１２
自体のレイアウト上、溶接時の誤差や溶接歪み等でどう
しても互いの軸線が一直線上にならない場合が発生する
からである。The following two types of connection states of the joint member 10 can be assumed. That is, the first pipe member 11 and the second pipe member 12 to be connected can be connected to each other on the same straight line with respect to the axis thereof, or not. This is because the first and second pipe members 11 and 12
This is because, due to its own layout, there is a case where the axes of the two members are not always aligned with each other due to an error during welding or welding distortion.
【００５３】まず、図２のように、第１パイプ部材１１
と第２パイプ部材１２との軸線を、一直線上で結合する
場合について、結合開始から結合完了までを順を追って
説明することにする。上記した各部材の要素の配置およ
び形状により、第１パイプ部材１１の第１シール面１１
ａと第１当接面１１ｂ、第２パイプ部材１２の第２シー
ル面１２ａと雄ねじ部１２ｂ、およびジョイント１３の
内周に固定した押さえ部材１５の第２当接面１５ａと雌
ねじ部１４ｂとは、それぞれが各部材単位で同軸上に存
在しているものの、雄ねじ部１２ｂと雌ねじ部１４ｂと
の螺着を始めることで、第２パイプ部材１２とジョイン
ト１３とに関係する要素のみが、同軸上にあることにな
る。すなわち、この時点では、第２パイプ部材１２の第
２シール面１２ａとジョイント１３の第２当接面１５ａ
とが同軸上に存在し、第１パイプ部材１１はジョイント
１３の内側に隙間をもって挿通してあるとともに、その
半径方向位置を拘束していないことから、第２シール面
１２ａと第２当接面１５ａに対し、第１シール面１１ａ
と第１当接面１１ｂだけは、必ずしも同軸上ではない、
ある程度自由な状態である。First, as shown in FIG.
A case where the axes of the shaft and the second pipe member 12 are connected on a straight line will be described in order from the start of the connection to the completion of the connection. The first seal surface 11 of the first pipe member 11 is determined by the arrangement and shape of the elements of each member described above.
a and the first contact surface 11b, the second seal surface 12a and the male screw portion 12b of the second pipe member 12, and the second contact surface 15a and the female screw portion 14b of the holding member 15 fixed to the inner periphery of the joint 13. Although each is coaxially present in each member unit, by starting the screwing of the male screw portion 12b and the female screw portion 14b, only the elements related to the second pipe member 12 and the joint 13 are coaxial. It will be in. That is, at this time, the second sealing surface 12a of the second pipe member 12 and the second contact surface 15a of the joint 13
Are present coaxially, the first pipe member 11 is inserted through the inside of the joint 13 with a gap, and its radial position is not restricted, so that the second sealing surface 12a and the second contact surface 15a, the first sealing surface 11a
And only the first contact surface 11b are not necessarily coaxial,
It is to some extent free.
【００５４】そして、この状態を保ったまま、雌ねじ部
１４ｂの雄ねじ部１２ｂへの螺着を続けていく訳である
が、このとき第１パイプ部材１１とジョイント１３と
は、上記したようにそれらの軸線が一致していないもの
の、第２当接面１５ａが第１当接面１１ｂを第２パイプ
部材１２方向に押し付けていく。そして、第１パイプ部
材１１の第１シール面１１ａが、第２パイプ部材１２の
第２シール面１２ａに接触すると、第１パイプ部材１１
の第１シール面１１ａと第１当接面１１ｂとが、これら
とそれぞれ接触した第２シール面１２ａと第２当接面１
５ａとの傾斜に沿って、落ち着く位置まで径方向に移動
を始める。Then, while maintaining this state, the screwing of the female screw portion 14b to the male screw portion 12b is continued. At this time, the first pipe member 11 and the joint 13 are connected to each other as described above. However, the second contact surface 15a presses the first contact surface 11b toward the second pipe member 12 although the axes do not coincide with each other. When the first seal surface 11a of the first pipe member 11 comes into contact with the second seal surface 12a of the second pipe member 12, the first pipe member 11
The first seal surface 11a and the first contact surface 11b are in contact with the second seal surface 12a and the second contact surface 1 respectively.
It starts to move in the radial direction along the inclination with 5a to a calm position.
【００５５】勿論、第１，第２シール面１１ａ，１２ａ
と、第１，第２当接面１１ｂ，１５ａとは、上記したよ
うにこれらのそれぞれが配置してある各部材の軸線と同
軸であるとともに、その形状も各軸線に対して対称であ
るものである。よって、雌ねじ部１４ｂが雄ねじ部１２
ｂに対して完全に螺着を終え、第１，第２シール面１１
ａ，１２ａとの接触部、および、第１，第２当接面１１
ｂ，１５ａとの接触部が、可能な限り第２パイプ部材１
２側に近づくようにする、すなわち、第１，第２パイプ
部材１１，１２間で確実な気密性，密着性を保証するよ
うに結合するには、第１パイプ部材１１の第１シール面
１１ａと第１当接面１１ｂとが、それぞれ第２パイプ部
材１２およびジョイント１３の軸線と初めて同軸上に収
まることで解決するものである。Of course, the first and second sealing surfaces 11a, 12a
And the first and second abutment surfaces 11b and 15a are coaxial with the axis of each member on which they are arranged as described above, and their shapes are also symmetrical with respect to each axis. It is. Therefore, the female screw portion 14b is
b, completely screwed into the first and second sealing surfaces 11
a, 12a, and first and second contact surfaces 11
b, 15a, the second pipe member 1
The first sealing surface 11a of the first pipe member 11 is required to make the first pipe member 11 closer to the second side, that is, to connect the first and second pipe members 11 and 12 so as to ensure reliable airtightness and adhesion. The first contact surface 11b and the first contact surface 11b are coaxial with the axes of the second pipe member 12 and the joint 13 for the first time.
【００５６】要するに、継手部材１０がこのような各部
材および要素の位置関係になることによって、ジョイン
ト１３の第２当接面１５ａは、第１パイプ部材１１の第
１当接面１１ｂを円周上で均一に線接触状態で押し付け
ており、さらにこの均一の押し付け力は、第１パイプ部
材１１の第１シール面１１ａが、第２パイプ部材１２の
第２シール面１２ａを円周上で均一に線接触状態で押し
付けていることから、第１パイプ部材１１，第２パイプ
部材１２間での確実な密着性と、高い気密性を保証する
というものである。In short, when the joint member 10 has such a positional relationship between the respective members and elements, the second contact surface 15a of the joint 13 is circumferentially connected to the first contact surface 11b of the first pipe member 11. The first sealing member 11 presses the first sealing surface 11a of the first pipe member 11 uniformly around the circumference of the second sealing surface 12a of the second pipe member 12. Since the first pipe member 11 and the second pipe member 12 are pressed against each other in a line contact state, a reliable adhesion between the first pipe member 11 and the second pipe member 12 and a high airtightness are guaranteed.
【００５７】次に、図３のように、第１パイプ部材１１
と第２パイプ部材１２との軸線を、ある軸交角θをもっ
た状態で結合する場合について、結合開始から結合完了
までを順を追って説明する。まず、第１パイプ部材１１
と第２パイプ部材１２とは、その軸線間に軸交角θを有
しているものの、これらを結合しようとして、第１パイ
プ部材１１の外周に装着したジョイント１３の雌ねじ部
１４ｂを、第２パイプ部材１２の雄ねじ部１２ｂに螺着
し始めると、このジョイント１３は第２パイプ部材１２
の軸線に倣いながら螺着していくため、結局は、第２パ
イプ部材１２およびジョイント１３の軸線に対して、第
１パイプ部材１１の軸線が、軸交角θをもつように傾斜
することになるものである。Next, as shown in FIG.
A case in which the axis of the second pipe member 12 is connected to the second pipe member 12 at a certain axis intersection angle θ will be described in order from the start of the connection to the completion of the connection. First, the first pipe member 11
The second pipe member 12 and the second pipe member 12 have an axis intersection angle θ between their axes, but in order to connect them, the female thread portion 14b of the joint 13 attached to the outer circumference of the first pipe member 11 is connected to the second pipe member 12. When the screw 13 starts to be screwed into the male screw portion 12b of the member 12, this joint 13
In the end, the axis of the first pipe member 11 is inclined with respect to the axis of the second pipe member 12 and the joint 13 so as to have the axis intersection angle θ with respect to the axis of the second pipe member 12 and the joint 13. Things.
【００５８】すなわち、この時点では、第２パイプ部材
１２の第２シール面１２ａとジョイント１３の第２当接
面１５ａとが同軸上に存在し、第１パイプ部材１１はジ
ョイント１３の内側に隙間をもって挿通してあることか
ら、第２シール面１２ａと第２当接面１５ａに対し、第
１シール面１１ａや第１当接面１１ｂはその径方向の位
置を拘束してはいない自由な状態である。That is, at this time, the second sealing surface 12a of the second pipe member 12 and the second contact surface 15a of the joint 13 are coaxial, and the first pipe member 11 has a gap inside the joint 13. The first seal surface 11a and the first contact surface 11b are free from any restriction in the radial direction with respect to the second seal surface 12a and the second contact surface 15a. It is.
【００５９】そして、この状態を保ったまま、雌ねじ部
１４ｂの雄ねじ部１２ｂへの螺着を続けていく訳である
が、このとき第１パイプ部材１１とジョイント１３と
は、上記したようにこれらの軸線に軸交角θを有したま
まの状態で、第２当接面１５ａが第１当接面１１ｂを第
２パイプ部材１２方向に押し付けていく。そして、第１
パイプ部材１１の第１シール面１１ａが、第２パイプ部
材１２の第２シール面１２ａに接触すると、第１パイプ
部材１１の第１シール面１１ａと第１当接面１１ｂと
が、これらとそれぞれ接触した第２シール面１２ａと第
２当接面１５ａとの傾斜に沿って、落ち着く位置まで径
方向に移動を始める。While this state is maintained, the screwing of the female screw portion 14b to the male screw portion 12b is continued. At this time, the first pipe member 11 and the joint 13 are connected to each other as described above. The second contact surface 15a presses the first contact surface 11b toward the second pipe member 12 while keeping the axis intersection angle θ with the axis of the second pipe member 12. And the first
When the first seal surface 11a of the pipe member 11 comes into contact with the second seal surface 12a of the second pipe member 12, the first seal surface 11a and the first contact surface 11b of the first pipe member 11, Along the slope between the contacted second seal surface 12a and the second contact surface 15a, it starts to move in the radial direction to a calm position.
【００６０】勿論、ここでも第１，第２シール面１１
ａ、１２ａと、第１，第２当接面１１ｂ，１５ａとは、
上記したようにこれらのそれぞれが配置してある各部材
の軸線と同軸であるとともに、その形状も各軸線に対し
て対称であるものである。そして、雌ねじ部１４ｂが雄
ねじ部１２ｂに対して完全に螺着を終え、第２パイプ部
材１２の軸線に対してある軸交角θをもった第１パイプ
部材１１が、可能な限り第２パイプ部材１２側に近づく
ために、第１，第２シール面１１ａ，１２ａ、および、
第１，第２当接面１１ｂ，１５ａとの各接触部は、前記
したように第１，第２各パイプ部材１１，１２の軸線が
一直線上になる場合と比べて、図３のように第１パイプ
部材１１側が回動したような位置にずれる訳である。Of course, the first and second sealing surfaces 11
a, 12a and the first and second contact surfaces 11b, 15a
As described above, each of these members is coaxial with the axis of each member on which they are arranged, and the shape is symmetric with respect to each axis. Then, the female screw portion 14b is completely screwed into the male screw portion 12b, and the first pipe member 11 having an axis intersection angle θ with respect to the axis of the second pipe member 12 is moved to the second pipe member as much as possible. In order to approach the side 12, the first and second sealing surfaces 11a, 12a, and
As shown in FIG. 3, the contact portions between the first and second contact surfaces 11b and 15a are different from the case where the axes of the first and second pipe members 11 and 12 are aligned as described above. That is, the first pipe member 11 is shifted to a position where the first pipe member 11 turns.
【００６１】ここで、上記したように、第１パイプ部材
１１の第１シール面１１ａと第１当接面１１ｂとは、両
方とも真円形状の一部を有した凸面としているととも
に、これらの凸状の球面形状は同一の回転中心Ｐを有し
ていることにより、たとえ第１パイプ部材１１側が第２
パイプ部材１２やジョイント１３に対して回動したよう
な配置になっても、第１シール面１１ａと第１当接面１
１ｂとが、それらの回転中心Ｐを中心として回動するこ
とで、その回転中心Ｐから第１，第２シール面１１ａ，
１２ａと、第１，第２当接面１２ａ，１５ａとの接触位
置までの距離が一切変化することはない。これは、第
１，第２シール面１１ａ，１２ａと第１，第２当接面１
２ａ，１５ａとが、結合面で線接触していることを意味
しており、それぞれが１つの円上で密着していることを
表している。Here, as described above, the first sealing surface 11a and the first contact surface 11b of the first pipe member 11 are both convex surfaces having a part of a perfect circle, Since the convex spherical shape has the same rotation center P, even if the first pipe member 11
The first sealing surface 11a and the first contact surface 1
1b rotates about their rotation center P, so that the first and second sealing surfaces 11a, 11a,
The distance from the contact position between the contact surface 12a and the first and second contact surfaces 12a and 15a does not change at all. This is because the first and second sealing surfaces 11a and 12a and the first and second contact surfaces 1
2a and 15a mean that they are in line contact with each other on the coupling surface, and indicate that they are in close contact on one circle.
【００６２】従って、この実施例では、第１，第２パイ
プ部材１１，１２の軸線を、一直線上で結合する場合は
勿論のこと、ある軸交角θをもった状態で結合しても、
ジョイント１３の第２当接面１５ａは、第１パイプ部材
１１の第１当接面１１ｂを円周上で均一に線接触状態で
押し付けており、さらにこの均一の押し付け力は、第１
パイプ部材１１の第１シール面１１ａが、第２パイプ部
材１２の第２シール面１２ａを円周上で均一に押し付け
ていることから、確実な密着性と、高い気密性を保証す
る継手部材１０が実現できるといった効果が実現できる
ものである。Therefore, in this embodiment, the first and second pipe members 11 and 12 may be connected in a straight line, or may be connected with a certain axis intersection angle θ.
The second contact surface 15a of the joint 13 uniformly presses the first contact surface 11b of the first pipe member 11 in a line contact state on the circumference, and the uniform pressing force is equal to the first pressing force.
Since the first sealing surface 11a of the pipe member 11 uniformly presses the second sealing surface 12a of the second pipe member 12 on the circumference, the joint member 10 which ensures a reliable adhesion and a high airtightness. Can be realized.
【００６３】尚、上記にて説明した図２，３の実施例で
は、第１パイプ部材１１と第２パイプ部材１２とを結合
するジョイント１３を、第１パイプ部材１１側の外周の
端面に装着しているものであるが、必ずしもこの構造で
ある必要はない。この別案として、具体的には、例えば
第２パイプ部材１２側の端面に、ジョイント１３に相当
する円筒部を設けており、第１パイプ部材１１の第１シ
ール面１１ａと第２パイプ部材１２の第２シール面１２
ａとを当接した後、第１パイプ部材１１側から押さえ部
材１５を、第２パイプ部材１２の端面に設けた円筒部の
内周に挿通し、内部へと押さえ付けていく。このような
構造とすることにより、押さえ部材１５の第２当接面１
５ａが第１パイプ部材１１の第１当接面１１ｂを押圧
し、この押し付け力により、第１パイプ部材１１の第１
シール面１１ａが、第２パイプ部材１２の第２シール面
１２ａに押圧することで、同様な効果を発揮するもので
ある。In the embodiment of FIGS. 2 and 3 described above, the joint 13 for connecting the first pipe member 11 and the second pipe member 12 is attached to the outer peripheral end face on the first pipe member 11 side. However, this structure is not necessarily required. As another alternative, specifically, for example, a cylindrical portion corresponding to the joint 13 is provided on the end face on the second pipe member 12 side, and the first seal surface 11a of the first pipe member 11 and the second pipe member 12 are provided. Second sealing surface 12
After the contact with a, the pressing member 15 is inserted from the first pipe member 11 side into the inner periphery of the cylindrical portion provided on the end face of the second pipe member 12 and pressed down inside. With such a structure, the second contact surface 1 of the holding member 15
5a presses the first contact surface 11b of the first pipe member 11, and the pressing force causes the first
The same effect is exerted by the sealing surface 11a pressing against the second sealing surface 12a of the second pipe member 12.
【００６４】また、ジョイント１３を第２パイプ部材１
２へ順次送り込んでいく図２，３の構造や、押さえ部材
１５を第２パイプ部材１２の端面に設けた円筒部の内周
へ順次送り込んでいく別案の構造は、ねじ構造による螺
着や圧入等、確実な固定が確保できるものであれば、ど
んな構造でも構わないものである。勿論、押さえ部材１
５の固着が万一外れるのを防止するプレート１６も、必
ずしも必要である訳ではなく、第１パイプ部材１１と第
２パイプ部材１２の確実な結合が保証できる、押さえ部
材１５の固着構造となっていれば、なくても問題ないこ
とはいうまでもない。The joint 13 is connected to the second pipe member 1.
2 and 3, and the alternative structure in which the holding member 15 is sequentially fed into the inner periphery of the cylindrical portion provided on the end face of the second pipe member 12, is formed by screwing with a screw structure. Any structure can be used as long as secure fixing such as press fitting can be ensured. Of course, the holding member 1
The plate 16 for preventing the fixing of the fixing member 5 from coming off is not always necessary, and has a fixing structure of the holding member 15 that can guarantee a reliable connection between the first pipe member 11 and the second pipe member 12. Needless to say, there is no problem if it does not exist.
【００６５】次に、図４および図５は、この継手部材１
０の主要な部分のみを拡大した第２の実施例の断面図で
ある。Next, FIGS. 4 and 5 show this joint member 1.
FIG. 9 is a cross-sectional view of the second embodiment in which only the main part of the second embodiment is enlarged.
【００６６】これについても、各部材の構成，ほとんど
の各要素の形状は、上記で説明した第１実施例と同様で
あるため、ここでは異なる点のみに絞って説明を行うこ
とにする。Also in this case, since the configuration of each member and the shape of most of the elements are the same as those of the first embodiment described above, only different points will be described here.
【００６７】まず、形状について述べると、第１実施例
では第２パイプ部材１２に設けた第２シール面１２ａ
と、ジョイント１３のケース１４の内周に設けた押さえ
部材１５の第２当接面１５ａとが、円錐テーパ面を有し
ているのに対して、第２実施例では、これらの両方とも
真円の球面の一部を取り出した凹面形状をしているとと
もに、これら第２シール面１２ａと第２当接面１５ａと
で、第１パイプ部材１１の第１シール面１１ａと第１当
接面１１ｂとを、密着するように挟み込んだ際に、これ
ら第２シール面１２ａと第２当接面１５ａとが、同一の
球面形状の回転中心Ｐをもっているというものである。
そして、これら第２シール面１２ａと第２当接面１５ａ
との曲率半径は、これらとそれぞれ接触する第１シール
面１１ａと第２当接面１１ｂのそれと、同等であるもの
である。First, the shape will be described. In the first embodiment, the second sealing surface 12a provided on the second pipe member 12 is provided.
And the second contact surface 15a of the holding member 15 provided on the inner periphery of the case 14 of the joint 13 has a conical tapered surface, whereas in the second embodiment, both of them are true. The second sealing surface 12a and the second abutting surface 15a have a concave surface shape obtained by extracting a part of the spherical surface of the circle, and the first sealing surface 11a and the first abutting surface of the first pipe member 11 are formed by the second sealing surface 12a and the second abutting surface 15a. 11b, the second seal surface 12a and the second contact surface 15a have the same spherical center of rotation P when they are sandwiched so as to be in close contact with each other.
The second sealing surface 12a and the second contact surface 15a
Are the same as those of the first sealing surface 11a and the second contact surface 11b, which are in contact with them.
【００６８】このように、接触する第１，第２シール面
１１ａ，１２ａと、第１，第２当接面１１ｂ，１５ａと
を、それぞれが同じ曲率半径とすることで、これらの接
触部分は、面接触となる訳である。As described above, by making the first and second sealing surfaces 11a and 12a and the first and second contact surfaces 11b and 15a have the same radius of curvature, these contact portions can be formed. , Which is a surface contact.
【００６９】すなわち、第１パイプ部材１１側のジョイ
ント１３を第２パイプ部材１２側へ螺着することによ
り、第２パイプ部材１２の第２当接面１５ａが第１当接
面１１ｂを第２パイプ部材１２側に押圧し、さらにこの
押圧力によって、第１シール面１１ａを第２パイプ部材
１２の第２シール面１２ａに押圧するのであるが、この
際、各接触面同士が同じ曲率面をもっていることによ
り、第１，第２パイプ部材１１，１２間の気密性、密着
性を左右する各接触面を、上記した請求項１のような線
接触ではなく、面接触とすることで、より信頼性のある
気密性，密着性が実現できるのである。That is, by screwing the joint 13 on the first pipe member 11 side to the second pipe member 12 side, the second contact surface 15a of the second pipe member 12 becomes the second contact surface 11b. The first sealing surface 11a is pressed against the second sealing surface 12a of the second pipe member 12 by the pressing force toward the pipe member 12 side. At this time, each contact surface has the same curvature surface. By having each contact surface that determines the airtightness and adhesion between the first and second pipe members 11 and 12 is not a line contact as in the above-described claim 1 but a surface contact, Reliable airtightness and adhesion can be achieved.
【００７０】ここで、第１，第２パイプ部材１１，１２
間で、軸線が一直線上に結合する場合は、接触する第
１，第２シール面１１ａ，１２ａと、第１，第２当接面
１１ｂ，１５ａとがそれぞれ同軸上に配置することか
ら、このような面接触が実現できるのは勿論のことであ
る。Here, the first and second pipe members 11 and 12
When the axes are connected in a straight line, the first and second contact surfaces 11a and 12a and the first and second contact surfaces 11b and 15a are coaxially arranged. Of course, such surface contact can be realized.
【００７１】さらに、接触している第１，第２シール面
１１ａ，１２ａと第１，第２当接面１１ｂ，１５ａと
は、上記のような特徴をもった形状をしていることによ
り、これらの接触面が全て接触すると、これらの接触面
全ては同一の回転中心Ｐをもつことになる。すなわち、
第２パイプ部材１２の第２シール面１２ａおよびジョイ
ント１３の第２当接面１５ａとそれぞれ接触している、
第１パイプ部材１１の第１シール面１１ａと第１当接面
１１ｂとが、互いに同一の回転中心Ｐを有した形状であ
ることにより、第１，第２パイプ部材１１，１２間で、
ある軸交角θをもった状態で結合する場合は、第１パイ
プ部材１１の第１シール面１１ａと第１当接面１１ｂと
が、その外側の第２パイプ部材１２の第２シール面１２
ａとジョイント１３の第２当接面１５ａとに沿って、接
触しながら回動することになるものである。Further, the first and second contact surfaces 11a and 12a and the first and second contact surfaces 11b and 15a which are in contact with each other have a shape having the above-described characteristics. When all these contact surfaces come into contact, all these contact surfaces have the same center of rotation P. That is,
A second seal surface 12a of the second pipe member 12 and a second contact surface 15a of the joint 13 are in contact with each other,
Since the first seal surface 11a and the first contact surface 11b of the first pipe member 11 have a shape having the same rotation center P, the first seal member 11 and the second pipe member 11
When the coupling is performed with a certain axis intersection angle θ, the first sealing surface 11a and the first contact surface 11b of the first pipe member 11 are connected to the second sealing surface 12 of the second pipe member 12 outside the first sealing surface 11a.
a and rotates along with the second contact surface 15a of the joint 13 while making contact.
【００７２】この際、ここでも、上記したように各接触
面同士が同じ曲率面をもっていることにより、面接触が
確保でき、より信頼性のある気密性，密着性が実現でき
るものである。At this time, since the contact surfaces have the same curvature as described above, surface contact can be ensured, and more reliable airtightness and adhesion can be realized.
【００７３】また、ここで述べた接触面での曲率半径の
関係は、接触する外側である第２パイプ部材１２の第２
シール面１２ａと、ジョイント１３の第２当接面１５ａ
との曲率半径を、これらの内側に配置する第１パイプ部
材１１の第１シール面１１ａおよび第１当接面１１ｂよ
りも大きくしてもよく、この場合は、相対する接触面を
面接触にすることは出来ないまでも、請求項１と同等レ
ベルの線接触にすることが出来ることから、請求項１と
同様な第１，第２パイプ部材１１，１２間の気密性，密
着性を実現することができる。The relationship of the radius of curvature at the contact surface described here is determined by the relationship between the second pipe member 12 and the second
Seal surface 12a, second contact surface 15a of joint 13
May be larger than the first sealing surface 11a and the first abutment surface 11b of the first pipe member 11 disposed on the inside thereof, and in this case, the opposing contact surfaces are brought into surface contact. Even if it is not possible to achieve the same level of line contact as in claim 1, the same airtightness and adhesion between the first and second pipe members 11 and 12 as in claim 1 are realized. can do.
【００７４】さらに、第２パイプ部材１２の第２シール
面１２ａと、ジョイント１３の第２当接面１５ａとは、
必ずしも上記したように図２，図３を使用して説明した
円錐テーパ面同士や、図４，図５を使用して説明した真
円の凹面同士である必要はなく、円錐テーパ面と真円の
凹面との組み合わせであっても全く問題ない。Further, the second seal surface 12a of the second pipe member 12 and the second contact surface 15a of the joint 13
As described above, the conical tapered surfaces described with reference to FIGS. 2 and 3 or the perfect circular concave surfaces described with reference to FIGS. 4 and 5 are not necessarily required. There is no problem at all even in combination with the concave surface.
【００７５】すなわち、図示はしないが、例えば、第２
シール面１２ａ側が円錐テーパ面であり、第２当接面１
５ａ側が真円の凹面といった組み合わせや、これとは反
対に第２シール面１２ａ側が真円の凹面であり、第２当
接面１５ａ側が円錐テーパ面といった組み合わせであっ
ても良く、これら接触面同士の形状およびその配置が、
上記した条件を満足しているものであれば、接触しよう
とする第１，第２パイプ部材１１，１２の軸線が、一直
線上になる、ならないに拘わらず、第１パイプ部材１１
と第２パイプ部材１２との間の気密性，密着性が確保で
きることは言うまでもない。That is, although not shown, for example, the second
The sealing surface 12a side is a conical taper surface, and the second contact surface 1
A combination such that the 5a side is a perfect circular concave surface, or conversely, a combination such that the second seal surface 12a side is a perfect circular concave surface and the second contact surface 15a side is a conical taper surface, may be used. The shape and arrangement of
If the above-mentioned conditions are satisfied, the first pipe member 11 can be contacted regardless of whether or not the axes of the first and second pipe members 11 and 12 to be in contact with each other are aligned.
Needless to say, the airtightness and the adhesion between the first pipe member 12 and the second pipe member 12 can be ensured.
【００７６】[0076]
【発明の効果】以上詳述した通り、請求項１の発明にお
いては、上記実施形態にて例示した如く、 「圧力流体
が通される２つの管路を連通させるために使用され、一
方の管路に接続される第１パイプ部材１１と、この第１
パイプ部材１１に当接されて、他方の管路に接続される
第２パイプ部材１２と、内周面に設けた押さえ部材１５
を介して第１パイプ部材１１及び第２パイプ部材１２の
各先端を互いに密着させるジョイント１３とを備えた継
手部材１０であって、第１パイプ部材１１の先端に形成
した第１シール面１１ａと、第１パイプ部材１１の、第
１シール面１１ａとは反対側になる部分に形成されて、
押さえ部材１５に当接する第１当接面１１ｂとを、同一
の回転中心Ｐをもつ円弧面としたこと」にその構成上の
特徴があり、これにより、結合しようとする第１，第２
パイプ部材１１，１２間で軸交角θをもった場合におい
ても、ジョイント１３の押さえ部材１５と第１当接面１
１ｂとの接触面、および、第１シール面１１ａと第２パ
イプ部材１２との接触面で、同一の回転中心Ｐをもつ円
にて片当たりすることなく全周で接触し、その結果、第
１パイプ部材１１と第２パイプ部材１２との軸線を一直
線上に配置した場合と同等の気密性を保証できるもので
ある。As described in detail above, in the first aspect of the present invention, as described in the above embodiment, "one of the pipes is used to connect two pipes through which the pressure fluid is passed. A first pipe member 11 connected to the road,
A second pipe member 12 which is in contact with the pipe member 11 and is connected to the other conduit, and a pressing member 15 provided on the inner peripheral surface;
A joint member 10 having a joint 13 for bringing the respective ends of the first pipe member 11 and the second pipe member 12 into close contact with each other via a first seal member 11a formed at the end of the first pipe member 11. , Formed on a portion of the first pipe member 11 opposite to the first seal surface 11a,
The first contact surface 11b that comes into contact with the holding member 15 is an arc surface having the same rotation center P. "
Even when the pipe members 11 and 12 have an axis intersection angle θ, the pressing member 15 of the joint 13 and the first contact surface 1
1b, and the contact surface between the first seal surface 11a and the second pipe member 12 make contact with the circle having the same rotation center P on the entire circumference without hitting each other. The same airtightness as in the case where the axes of the first pipe member 11 and the second pipe member 12 are arranged on a straight line can be guaranteed.
【００７７】また、請求項２に係る発明においては、上
記請求項１に係るについて、「第１シール面１１ａと第
１当接面１１ｂとを真円凸面とし、第１シール面１１ａ
が当接することになる第２パイプ部材１２側の第２シー
ル面１２ａと、第１当接面１１ｂに当接する押さえ部材
１５側の第２当接面１５ａとを円錐テーパ面としたこ
と」にその構造上の特徴があり、これにより、上記請求
項１に係る発明と同様な目的を、第１パイプ部材１１の
第１シール面１１ａと第１当接面１１ｂとが球面の一部
を切り取った真円の凸面であり、第２パイプ部材１２の
第２シール面１２ａと押さえ部材１５の第２当接面１５
ａとが円錐状のテーパ面であるという具体的な形状によ
って、達成することができるものとなっている。According to the second aspect of the present invention, as described in the first aspect, "the first sealing surface 11a and the first abutting surface 11b are perfectly circular convex surfaces, and the first sealing surface 11a
And the second sealing surface 12a on the second pipe member 12 side to be contacted and the second contact surface 15a on the holding member 15 side contacting the first contact surface 11b are conical tapered surfaces. The first sealing member 11a and the first contacting surface 11b of the first pipe member 11 cut off a part of the spherical surface for the same purpose as the first aspect of the present invention. The second sealing surface 12a of the second pipe member 12 and the second contact surface 15 of the holding member 15.
This can be achieved by a specific shape in which a is a conical tapered surface.
【００７８】続いて、請求項３に係る発明においては、
上記請求項１に係るについて、「第１シール面１１ａと
第１当接面１１ｂとを真円凸面とし、第１シール面１１
ａが当接することになる第２パイプ部材１２側の第２シ
ール面１２ａと、第１当接面１１ｂに当接する押さえ部
材１５側の第２当接面１５ａとを真円凹面としたこと」
にその構造上の特徴があり、これにより、上記請求項１
に係る発明と同様な目的を、第１パイプ部材１１の第１
シール面１１ａと第１当接面１１ｂとが球面の一部を切
り取った真円の凸面であり、第２パイプ部材１２の第２
シール面１２ａと押さえ部材１５の第２当接面１５ａと
が球面の一部を切り取った真円の凹面であるという具体
的な形状によって、面接触というさらに高い気密性で達
成することができるものとなっている。Subsequently, in the invention according to claim 3,
According to the first aspect, "the first seal surface 11a and the first contact surface 11b are perfectly circular convex surfaces;
The second sealing surface 12a on the side of the second pipe member 12 with which a contacts, and the second abutment surface 15a on the side of the holding member 15 which abuts on the first abutment surface 11b are perfectly concave.
Is characterized by its structure, whereby
The first object of the first pipe member 11
The sealing surface 11a and the first contact surface 11b are perfectly round convex surfaces obtained by cutting off a part of the spherical surface, and the second pipe member 12
With a specific shape in which the sealing surface 12a and the second contact surface 15a of the pressing member 15 are a perfect circular concave surface obtained by cutting off a part of a spherical surface, a surface contact can be achieved with higher airtightness. It has become.
【００７９】さらに、請求項４に係る発明においては、
上記請求項１に係るについて、「第１シール面１１ａと
第１当接面１１ｂとを真円凸面とし、第１シール面１１
ａが当接することになる第２パイプ部材１２側の第２シ
ール面１２ａ、または第１当接面１１ｂに当接する押さ
え部材１５側の第２当接面１５ａのいずれか一方を円錐
テーパ面とし、他方の第２当接面１５ａまたは第２シー
ル面１２ａを真円凹面としたこと」にその構造上の特徴
があり、これにより、上記請求項１に係る発明と同様な
目的を、第１パイプ部材１１の第１シール面１１ａと第
１当接面１１ｂとが球面の一部を切り取った真円の凸面
であり、第２パイプ部材１２の第２シール面１２ａと押
さえ部材１５の第２当接面１５ａとが円錐状のテーパ面
あるいは球面の一部を切り取った真円の凹面のいずれか
一方ずつであるという具体的な形状によって、達成する
ことができるものとなっている。Further, in the invention according to claim 4,
According to the first aspect, "the first seal surface 11a and the first contact surface 11b are perfectly circular convex surfaces;
One of the second sealing surface 12a on the second pipe member 12 side to be contacted by a and the second contact surface 15a on the pressing member 15 side contacting the first contact surface 11b is a conical tapered surface. And the other second contact surface 15a or the second seal surface 12a is a perfect circular concave surface ", which has a structural feature. The first sealing surface 11a and the first contact surface 11b of the pipe member 11 are perfectly round convex surfaces obtained by cutting off a part of the spherical surface, and the second sealing surface 12a of the second pipe member 12 and the second This can be achieved by a specific shape in which the contact surface 15a is either a conical tapered surface or a perfect circular concave surface obtained by cutting a part of a spherical surface.
【図１】本発明に係る継手部材の一実施例を使用したパ
イプ部材の結合構造を示すものであって、軸方向の断面
図である。FIG. 1 is a cross-sectional view in the axial direction, showing a connecting structure of a pipe member using one embodiment of a joint member according to the present invention.
【図２】本発明に係る継手部材の一実施例の同軸状態を
示す断面図である。FIG. 2 is a cross-sectional view showing a coaxial state of one embodiment of the joint member according to the present invention.
【図３】本発明に係る継手部材の一実施例の軸交角θを
もった状態を示す断面図である。FIG. 3 is a cross-sectional view showing the joint member according to the embodiment of the present invention in a state having an axis intersection angle θ.
【図４】本発明に係る継手部材の別の実施例の同軸状態
を示す断面図である。FIG. 4 is a sectional view showing a coaxial state of another embodiment of the joint member according to the present invention.
【図５】本発明に係る継手部材の別の実施例の軸交角θ
をもった状態を示す断面図である。FIG. 5 shows an axis intersection angle θ of another embodiment of the joint member according to the present invention.
It is sectional drawing which shows the state which had.
【図６】油圧アクチュエータを車両に搭載した代表図で
ある。FIG. 6 is a representative view in which a hydraulic actuator is mounted on a vehicle.
【図７】継手部材を使用した配管を搭載した油圧アクチ
ュエータの代表図である。FIG. 7 is a representative view of a hydraulic actuator equipped with piping using a joint member.
【図８】従来例に係る継手部材の同軸状態を示す断面図
である。FIG. 8 is a sectional view showing a coaxial state of a joint member according to a conventional example.
【図９】従来例に係る継手部材の軸交角θをもった状態
を示す断面図である。FIG. 9 is a cross-sectional view showing a joint member according to a conventional example in a state having an axis intersection angle θ.
１０ 継手部材 １１ 第１パイプ部材 １１ａ 第１シール面 １１ｂ 第１当接面 １２ 第２パイプ部材 １２ａ 第２シール面 １２ｂ 雄ねじ部 １３ ジョイント １４ ケース １４ａ 内周面 １４ｂ 雌ねじ部 １５ 押さえ部材 １５ａ 第２当接面 １６ プレート １００ 油圧アクチュエータ １１０ 継手部材 １２０ 第１パイプ部材 １２１ 第１シール面 １２２ 外設溝 １３０ 第２パイプ部材 １３１ 第２シール面 １４０ ジョイント １４１ 内設鍔 １５０ ソケット １６０ エルボ １７０ 油圧シリンダ １８０ アイ １９０ アイ ２００ ブラケット Ｐ 回転中心 ａ 溶接部 θ 軸交角 DESCRIPTION OF SYMBOLS 10 Joint member 11 1st pipe member 11a 1st seal surface 11b 1st contact surface 12 2nd pipe member 12a 2nd seal surface 12b Male screw part 13 Joint 14 Case 14a Inner peripheral surface 14b Female screw part 15 Press member 15a Second contact Contact surface 16 Plate 100 Hydraulic actuator 110 Coupling member 120 First pipe member 121 First seal surface 122 Outer groove 130 Second pipe member 131 Second seal surface 140 Joint 141 Inner flange 150 Socket 160 Elbow 170 Hydraulic cylinder 180 Eye 190 Eye 200 Bracket P Center of rotation a Welded part θ Intersecting angle
Claims (4)
るために使用され、一方の管路に接続される第１パイプ
部材と、この第１パイプ部材に当接されて、他方の管路
に接続される第２パイプ部材と、内周面に設けた押さえ
部材を介して前記第１パイプ部材及び第２パイプ部材の
各先端を互いに密着させるケースとを備えた継手部材で
あって、 前記第１パイプ部材の先端に形成した第１シール面と、
前記第１パイプ部材の、前記第１シール面とは反対側に
なる部分に形成されて、前記押さえ部材に当接する第１
当接面とを、同一の回転中心をもつ円弧面としたことを
特徴とする継手部材。1. A first pipe member connected to one of a plurality of conduits through which a pressure fluid is passed, and a first pipe member connected to one of the first conduit members and the other being in contact with the first pipe member. A joint member comprising: a second pipe member connected to a pipeline; and a case for bringing each end of the first pipe member and the second pipe member into close contact with each other via a holding member provided on an inner peripheral surface. A first sealing surface formed at a tip of the first pipe member;
A first pipe member is formed at a portion of the first pipe member opposite to the first seal surface and is in contact with the holding member.
A joint member, wherein the contact surface is an arc surface having the same rotation center.
面とし、前記第１シール面が当接することになる第２パ
イプ部材側の第２シール面と、前記第１当接面に当接す
る押さえ部材側の第２当接面とを円錐テーパ面としたこ
とを特徴とする請求項１に記載の継手部材。2. The method according to claim 1, wherein the first seal surface and the first contact surface are round convex surfaces, and the second seal surface of the second pipe member on which the first seal surface comes into contact, and the first contact surface. The joint member according to claim 1, wherein the second contact surface on the side of the holding member that contacts the contact surface is a conical tapered surface.
面とし、前記第１シール面が当接することになる第２パ
イプ部材側の第２シール面と、前記第１当接面に当接す
る押さえ部材側の第２当接面とを真円凹面としたことを
特徴とする請求項１に記載の継手部材。3. A method according to claim 1, wherein the first sealing surface and the first abutment surface are perfectly circular convex surfaces, and the second sealing surface of the second pipe member on which the first sealing surface abuts, and the first abutment surface. The joint member according to claim 1, wherein the second contact surface on the side of the holding member that contacts the contact surface is a perfectly circular concave surface.
面とし、前記第１シール面が当接することになる前記第
２パイプ部材側の第２シール面、または前記第１当接面
に当接する押さえ部材側の第２当接面のいずれか一方を
円錐テーパ面とし、他方の前記第２当接面または第２シ
ール面を真円凹面としたことを特徴とする請求項１に記
載の継手部材。4. The first sealing surface and the first contacting surface are formed as perfect circular convex surfaces, and the second sealing surface on the side of the second pipe member where the first sealing surface comes into contact, or the first sealing surface. One of the second contact surfaces on the holding member contacting the contact surface is a conical tapered surface, and the other of the second contact surface or the second sealing surface is a perfect circular concave surface. Item 2. The joint member according to Item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000228183A JP2002039456A (en) | 2000-07-28 | 2000-07-28 | Joint member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000228183A JP2002039456A (en) | 2000-07-28 | 2000-07-28 | Joint member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002039456A true JP2002039456A (en) | 2002-02-06 |
Family
ID=18721524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000228183A Pending JP2002039456A (en) | 2000-07-28 | 2000-07-28 | Joint member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002039456A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017199466A1 (en) * | 2016-05-19 | 2017-11-23 | 三桜工業株式会社 | Fuel distribution device |
-
2000
- 2000-07-28 JP JP2000228183A patent/JP2002039456A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017199466A1 (en) * | 2016-05-19 | 2017-11-23 | 三桜工業株式会社 | Fuel distribution device |
| JP2017207018A (en) * | 2016-05-19 | 2017-11-24 | 三桜工業株式会社 | Fuel distributor |
| CN109154263A (en) * | 2016-05-19 | 2019-01-04 | 三樱工业株式会社 | fuel dispensing device |
| US11022082B2 (en) | 2016-05-19 | 2021-06-01 | Sanoh Industrial Co., Ltd. | Fuel distribution device |
| CN109154263B (en) * | 2016-05-19 | 2021-08-10 | 三樱工业株式会社 | Fuel distribution device |
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