JP2003028354A - Connecting structure for member such as valve - Google Patents
Connecting structure for member such as valveInfo
- Publication number
- JP2003028354A JP2003028354A JP2001220563A JP2001220563A JP2003028354A JP 2003028354 A JP2003028354 A JP 2003028354A JP 2001220563 A JP2001220563 A JP 2001220563A JP 2001220563 A JP2001220563 A JP 2001220563A JP 2003028354 A JP2003028354 A JP 2003028354A
- Authority
- JP
- Japan
- Prior art keywords
- male screw
- nut
- screw portion
- valve
- screwed
- 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
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Abstract
Description
【０００１】[0001]
【本発明の属する技術分野】本発明は複数のバルブ等の
部材を接続するための接続構造に関するものであり、さ
らに詳しくは主として半導体産業における超純水ライン
や化学産業における各種化学薬液ラインで用いられる部
材であるバルブ、ポンプ、タンク、継ぎ手などを接続す
るバルブ等の部材接続構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure for connecting members such as a plurality of valves. More specifically, it is used mainly in ultrapure water lines in the semiconductor industry and various chemical liquid lines in the chemical industry. The present invention relates to a member connection structure such as a valve, a valve, a pump, a tank, a valve, and the like, which are connected members.
【０００２】[0002]
【従来の技術】図８は従来の部材接続構造（接続前の状
態）を示す縦断面図である。図９は、図８の接続後の状
態を示す縦断面図である。図１０はバルブ同士の接続に
従来の接続構造を用いた例を示す正面図である。図１１
は分岐ラインを有する配管に従来の接続構造を用いた例
を示す平面図である。従来、半導体産業で用いられる各
種装置内配管では、図８に示すような接続構造を有する
樹脂製の継ぎ手が一般的に使用されていた。すなわち、
３４はチューブ３５端部が拡径して形成された拡径部
で、内周面に雌ネジ部３６が形成されたＰＦＡ製のキャ
ップナット３７が外周に遊嵌されている。３８は一方の
バルブ端部３９に一体的に設けられた接続部で、先端部
に前記チューブ３５の拡径部３４が嵌合される差込部４
０とそれに連続した外周部に雄ネジ部４１が設けられて
いる。チューブ３５の他方側及び他方のバルブ端部４２
も同様の構造とされている。一方のバルブの接続部３８
にチューブ３５を接続するには、先ず、チューブ３５の
拡径部３４を差込部４０に挿嵌し、次にキャップナット
３７の雌ネジ部３６を雄ネジ部４１に螺着させることに
より行われていた。勿論、他方側も同様に接続されてい
た。チューブ３５で両方のバルブ端部３９、４２を接続
した状態を図９に示した。従来は以上のような接続構造
であった。2. Description of the Related Art FIG. 8 is a longitudinal sectional view showing a conventional member connection structure (state before connection). FIG. 9 is a vertical cross-sectional view showing the state after connection in FIG. FIG. 10 is a front view showing an example in which a conventional connection structure is used to connect valves. Figure 11
FIG. 6 is a plan view showing an example in which a conventional connection structure is used for a pipe having a branch line. Conventionally, resin-made joints having a connection structure as shown in FIG. 8 have been generally used in various apparatus pipings used in the semiconductor industry. That is,
Reference numeral 34 denotes a diameter-increased portion formed by expanding the diameter of the end of the tube 35, and a PFA cap nut 37 having a female screw portion 36 formed on the inner peripheral surface is loosely fitted to the outer periphery. Reference numeral 38 is a connection portion integrally provided on one valve end portion 39, and the insertion portion 4 into which the enlarged diameter portion 34 of the tube 35 is fitted at the tip portion.
A male screw portion 41 is provided at 0 and the outer peripheral portion continuous with 0. The other side of the tube 35 and the other valve end 42
Has the same structure. One valve connection 38
To connect the tube 35 to the plug 35, first, the expanded diameter portion 34 of the tube 35 is inserted into the insertion portion 40, and then the female screw portion 36 of the cap nut 37 is screwed to the male screw portion 41. It was being appreciated. Of course, the other side was similarly connected. A state in which both valve ends 39 and 42 are connected by the tube 35 is shown in FIG. Conventionally, the connection structure is as described above.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記従
来の接続構造においては、以下のような問題点があっ
た。バルブ部材等を接続する前に、予めチューブ３５に
キャップナット３７を挿通した状態でチューブ３５の端
部の拡径作業を行わなければならないため、チューブ３
５にはキャップナット３７からその端部を突出させるた
めの余長が必要になる。従って、バルブ等の部材同士を
隣接して接続する場合ですら部材間の面間が大きくなっ
てしまい、広い配管スペースが必要になり、必然的に従
来の接続構造を用いた配管施工されている各種装置は大
きくなってしまう（図１０参照）。更にこのような接続
構造では接続部が２ヶ所になることから接続不良を起こ
すおそれが大きかった。However, the above-mentioned conventional connection structure has the following problems. Before connecting the valve member or the like, the diameter of the end portion of the tube 35 must be expanded while the cap nut 37 is inserted into the tube 35 in advance.
5 requires an extra length for projecting the end portion from the cap nut 37. Therefore, even when connecting members such as valves adjacent to each other, the surface space between the members becomes large, and a large piping space is required. Therefore, piping using the conventional connection structure is inevitable. Various devices will be large (see FIG. 10). Further, in such a connection structure, since there are two connection portions, there is a high possibility that a connection failure will occur.
【０００４】また、図１１に示すように分岐ラインを有
する複雑な配管系に従来の接続構造を用いた場合では、
配管系全体が大きくなってしまうという問題と共に、チ
ーズ継手４３とバルブ４４間の接続部分のデッドスペー
スが大きくなって流体が滞留しやすいという問題があっ
た。Further, in the case where the conventional connection structure is used for a complicated piping system having a branch line as shown in FIG.
In addition to the problem that the entire piping system becomes large, there is a problem that the dead space at the connecting portion between the cheese joint 43 and the valve 44 becomes large and the fluid tends to stay.
【０００５】また、従来の接続構造では例えばＰＦＡ製
のチューブの拡径作業時にはチューブの端部を専用の治
具等を用いて拡径する必要があるため、多くの部材を用
いる場合では配管作業に時間がかかるという問題があっ
た。Further, in the conventional connection structure, for example, when expanding the diameter of a PFA tube, it is necessary to expand the diameter of the end of the tube using a dedicated jig or the like. Therefore, when many members are used, piping work is required. There was a problem that it took time.
【０００６】本発明は上記従来の接続構造の問題点に鑑
みなされたもので、省スペースが要求される各種装置内
でも使用可能で、小さな面間で部材同士を接続すること
ができるばかりでなく、接続不良を削減し、且つ流体の
滞留を無くすことができ、専用の治具等を用いなくとも
短時間で部材同士の接続作業を行うことができるバルブ
等の部材接続構造を提供することを目的としている。The present invention has been made in view of the problems of the above-described conventional connection structure, and can be used in various devices requiring space saving, and not only can members be connected to each other between small surfaces. It is possible to provide a member connection structure such as a valve that can reduce connection defects and eliminate fluid retention, and that can connect members to each other in a short time without using a dedicated jig or the like. Has an aim.
【０００７】[0007]
【課題を解決するための手段】このため本発明は、接続
すべき第一部材１と第二部材２とをナット１２でもって
接続するバルブ等の部材接続構造であって、第一部材１
には、その外周面に第一雄ネジ部３と第一雄ネジ部３か
ら連続して円筒状の嵌合凸部４が形成されると共に、内
部に流路５を有する第一接続部６が設けられ、第二部材
２には、その外周面に第一雄ネジ部３と逆方向に螺刻さ
れた第二雄ネジ部７が形成されると共に、第二部材２の
流路１３と連通された嵌合凹部８を有する第二接続部９
が設けられ、ナット１２の一方の内周面には、第一雄ネ
ジ部３と螺合可能な第一雌ネジ部１０が設けられると共
に、他方の内周面には、第二雄ネジ部７と螺合可能な第
二雌ネジ部１１が設けられ、第一部材１の第一接続部６
の嵌合凸部４を、第二部材２の第二接続部９の嵌合凹部
８に嵌合させた状態でナット１２でもって螺着してなる
ことを第１の特徴とする。Therefore, the present invention provides a member connection structure such as a valve for connecting the first member 1 and the second member 2 to be connected with the nut 12, and the first member 1
On the outer peripheral surface thereof, a first male screw portion 3 and a cylindrical fitting convex portion 4 continuous from the first male screw portion 3 are formed, and a first connecting portion 6 having a flow path 5 inside is formed. Is provided on the outer peripheral surface of the second member 2, and a second male screw portion 7 threaded in the opposite direction to the first male screw portion 3 is formed on the outer peripheral surface thereof. Second connection part 9 having fitting recess 8 communicated
Is provided on one inner peripheral surface of the nut 12, and a first female screw portion 10 that can be screwed into the first male screw portion 3 is provided on the other inner peripheral surface of the nut 12. A second female screw portion 11 that can be screwed into the first member 1 is provided.
The first feature is that the fitting convex portion 4 is screwed with the nut 12 in a state of being fitted in the fitting concave portion 8 of the second connecting portion 9 of the second member 2.
【０００８】また、第一雄ネジ部３と第二雄ネジ部７と
のネジ外径を異ならせたことを第２の特徴とし、第一雄
ネジ部３又は第二雄ネジ部７の少なくとも一方にロック
ナット２２が螺合されていることを第３の特徴とし、さ
らに当該接続される部材が、バルブ、ポンプ、タンク、
継ぎ手であることを第４の特徴とする。A second feature is that the outer diameters of the first male screw portion 3 and the second male screw portion 7 are different from each other, and at least the first male screw portion 3 or the second male screw portion 7 is provided. A third feature is that a lock nut 22 is screwed on one side, and further, the connected members are a valve, a pump, a tank,
The fourth characteristic is that it is a joint.
【０００９】本発明の接続構造の各部材の材質は金属で
もプラスチックでも良く、特に限定されるものではない
が、第一接続部、第二接続部にはＰＴＦＥ、ＰＦＡ等の
フッ素系樹脂が、ナットには同ＰＦＡ、ＰＶＤＦが特に
好適なものとして挙げられる。The material of each member of the connection structure of the present invention may be metal or plastic, and is not particularly limited, but fluorine-based resin such as PTFE or PFA is used for the first connecting portion and the second connecting portion. As the nut, the same PFA and PVDF are particularly preferable.
【００１０】[0010]
【発明の実施の形態】以下、本発明の実施の形態につい
て図面に示す実施例を参照して説明するが、本発明が下
記各実施例に限定されないことは言うまでもない。図１
は本発明に係る部材接続構造の一実施例（接続前の状
態）を示す縦断面図である。図２は図１の実施例の接続
状態を示す縦断面図である。図３は本発明に係る他の実
施例（接続前の状態）を示す縦断面図である。図４は本
発明に係る部材接続構造の他の実施例を示す縦断面図で
ある。図５は本発明に係る部材接続構造を用いた配管例
を示す正面図である。図６は本発明に係る部材接続構造
を用いた分岐ラインを有する配管例を示す正面図であ
る。図７は本発明に係る部材接続構造を用いたポンプ、
バルブ及びタンクの配管例を示す正面図である。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the examples shown in the drawings, but it goes without saying that the present invention is not limited to the following examples. Figure 1
FIG. 3 is a vertical cross-sectional view showing an example (state before connection) of the member connection structure according to the present invention. FIG. 2 is a vertical sectional view showing a connection state of the embodiment of FIG. FIG. 3 is a vertical sectional view showing another embodiment (state before connection) according to the present invention. FIG. 4 is a vertical sectional view showing another embodiment of the member connecting structure according to the present invention. FIG. 5 is a front view showing an example of piping using the member connection structure according to the present invention. FIG. 6 is a front view showing an example of piping having a branch line using the member connection structure according to the present invention. FIG. 7 is a pump using the member connection structure according to the present invention,
It is a front view showing an example of piping of a valve and a tank.
【００１１】[0011]
【実施例１】本発明の第１の実施例を図１及び図２に基
づいて説明する。図において、６はＰＴＦＥ製のバルブ
（図示せず）等の部材１の端部に設けられた第一接続部
であり、外周面に第一雄ネジ部３を有し、管端に面取り
部を有した円筒状の嵌合凸部４が第一雄ネジ部３に連続
して形成されている。また、内部には流路５が設けられ
ている。[Embodiment 1] A first embodiment of the present invention will be described with reference to FIGS. In the figure, 6 is a first connecting portion provided at an end portion of a member 1 such as a PTFE valve (not shown), which has a first male screw portion 3 on an outer peripheral surface and a chamfered portion at a pipe end. A cylindrical fitting convex portion 4 having a is formed continuously with the first male screw portion 3. Further, a flow path 5 is provided inside.
【００１２】９はＰＴＦＥ製のバルブ（図示せず）等の
部材２の端部に設けられた第二接続部であり、外周面に
第一雄ネジ部３とは逆方向に螺刻された第二雄ネジ部７
を有し、内部に流路１３と連通し且つ奥側に暫時縮径す
るテーパ部を有した嵌合凹部８が設けられている。Reference numeral 9 denotes a second connecting portion provided at an end portion of the member 2 such as a PTFE valve (not shown), which is threaded on the outer peripheral surface in a direction opposite to that of the first male screw portion 3. Second male screw part 7
And a fitting recess 8 having a tapered portion that communicates with the flow path 13 and has a diameter that is temporarily reduced on the inner side.
【００１３】１２は六角柱状で且つ筒状に形成されたＰ
ＦＡ製のナットであり、内周面の一方に第一雄ネジ部３
と螺合される第一雌ネジ部１０が設けられており、他方
には第二雄ネジ部７と螺合される第二雌ネジ部１１が設
けられている。すなわち、第一雌ネジ部１０と第二雌ネ
ジ部１１のネジは互いに逆方向に螺刻されている。Reference numeral 12 is a hexagonal columnar and cylindrical P
It is a FA nut, and the first male screw part 3 is provided on one of the inner peripheral surfaces.
Is provided with a first female screw portion 10, and the other is provided with a second female screw portion 11 screwed with the second male screw portion 7. That is, the screws of the first female screw portion 10 and the second female screw portion 11 are threaded in opposite directions.
【００１４】次に本実施例の接続方法について説明す
る。図１の状態において第一雄ネジ部３と第一雌ネジ部
１０及び第二雄ネジ部６と第二雌ネジ部１１をそれぞれ
螺合させてネジが噛み合う方向にナット１２を回動操作
すると、第一接続部６及び第二接続部９は軸方向で且つ
各接続部６、９が互いに接近する方向に移動すると同時
に第一接続部６の嵌合凸部４が第二接続部９の嵌合凹部
８に嵌挿されていき、両接続部の流路５、１３が連通さ
れ、ナット１２と各々の接続部６、９の螺着が完了する
と、両部材の接続は完了する（図２の状態）。Next, the connection method of this embodiment will be described. When the first male screw portion 3 and the first female screw portion 10 and the second male screw portion 6 and the second female screw portion 11 are respectively screwed in the state of FIG. , The first connecting portion 6 and the second connecting portion 9 move in the axial direction and in a direction in which the respective connecting portions 6 and 9 approach each other, and at the same time, the fitting convex portion 4 of the first connecting portion 6 causes the second connecting portion 9 to move. When they are inserted into the fitting recesses 8, the flow paths 5 and 13 of both connection portions are communicated, and the nut 12 and the respective connection portions 6 and 9 are screwed, the connection of both members is completed (Fig. State 2).
【００１５】一方、前記とは逆の方向にナット１２を回
動操作すると、第一接続部６の嵌合凸部４は第二接続部
９の嵌合凹部８から離脱されていき、ナット１２から各
々の接続部６、９が離間され、両部材の接続は解除され
る。On the other hand, when the nut 12 is rotated in the opposite direction to the above, the fitting convex portion 4 of the first connecting portion 6 is separated from the fitting concave portion 8 of the second connecting portion 9, and the nut 12 And the connecting portions 6 and 9 are separated from each other, and the connection between both members is released.
【００１６】[0016]
【実施例２】次に、本発明の第２の実施例を図３に基づ
いて説明する。前記第１の実施例の構造と異なる点は、
第一雄ネジ部１４の外径が第二雄ネジ部１５の外径より
小さく設けられている点である。さらにナット１６の各
雌ネジ部１７、１８は各接続部の雄ネジ部１４、１５に
各々螺合可能に螺刻されていて、第一雌ネジ部１７の内
径は第二雌ネジ部１８の内径よりも小さく設けられてい
る。以上のような構造にすると、ナット１６はその方向
を間違えて各接続部１９、２０に接続されることなく正
確な接続が可能になる。尚、接続部１９、２０の材質が
強度の高いものであれば、逆に第二雄ネジ部１５の外径
を第一雄ネジ部１４の外径よりも小さく設けても良い。
その場合にはナット１６の第二雌ネジ部１８の内径は第
一雌ネジ部１７の内径よりも小さく設けられる。また、
本実施例の接続方法は第１の実施例の接続方法と同様な
ので説明は省略する。Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIG. The difference from the structure of the first embodiment is that
The outer diameter of the first male screw portion 14 is smaller than the outer diameter of the second male screw portion 15. Further, the female screw portions 17 and 18 of the nut 16 are threaded so as to be screwed into the male screw portions 14 and 15 of the respective connecting portions, and the inner diameter of the first female screw portion 17 is the same as that of the second female screw portion 18. It is smaller than the inner diameter. With the structure as described above, the nut 16 can be connected accurately without being connected to the connecting portions 19 and 20 by mistake in the direction thereof. Incidentally, if the material of the connecting portions 19 and 20 has high strength, the outer diameter of the second male screw portion 15 may be smaller than the outer diameter of the first male screw portion 14 conversely.
In that case, the inner diameter of the second female screw portion 18 of the nut 16 is provided smaller than the inner diameter of the first female screw portion 17. Also,
The connection method of this embodiment is the same as the connection method of the first embodiment, and the description thereof is omitted.
【００１７】[0017]
【実施例３】次に、図４に基づいて本発明の第３の実施
例について説明する。前記第１の実施例の構造と異なる
点は、第二雄ネジ部２１に断面形状が六角形のＰＦＡ製
のロックナット２２を螺合させている点である。接続方
法は、第二雄ネジ部２１にロックナット２２を予め螺合
させた状態で、第１の実施例と同様の接続方法でナット
２３と各々の接続部２４、２５とを螺着させる。その
後、ロックナット２２を軸方向でナット２３に接近する
方向に回動操作し、ナット２３の端面にロックナット２
２の端面を圧接させる。この方法によりナット２３の緩
みを確実に防止することができる。尚、ロックナット２
２は第二雄ネジ部２６だけではなく、第一雄ネジ部２１
に螺合させても良い。また、どちらか一方だけでなく両
雄ネジ部２１、２６にそれぞれ螺合させても良い。Third Embodiment Next, a third embodiment of the present invention will be described with reference to FIG. The difference from the structure of the first embodiment is that a lock nut 22 made of PFA having a hexagonal cross section is screwed into the second male screw portion 21. The connection method is such that the lock nut 22 is screwed into the second male screw portion 21 in advance, and the nut 23 and the respective connection portions 24 and 25 are screwed by the same connection method as in the first embodiment. After that, the lock nut 22 is rotated in the axial direction to approach the nut 23, and the lock nut 2 is attached to the end surface of the nut 23.
The two end faces are pressed together. By this method, loosening of the nut 23 can be reliably prevented. The lock nut 2
2 is not only the second male screw portion 26 but also the first male screw portion 21.
It may be screwed on. Further, not only one of them but also the both male screw portions 21 and 26 may be screwed respectively.
【００１８】次に、本発明を用いた配管部材同士の接続
方法について説明する。図５は本発明の接続構造を用い
てバルブ２７とバルブ２８とが接続されている装置内配
管例を示している。従来の接続構造（図９参照）と比較
して明らかなようにバルブ同士の面間が半減する。ま
た、接続箇所が１箇所のみであるため、接続不良が発生
するおそれも低減する。Next, a method of connecting the piping members according to the present invention will be described. FIG. 5 shows an example of in-apparatus piping in which the valve 27 and the valve 28 are connected using the connection structure of the present invention. As is apparent from the comparison with the conventional connection structure (see FIG. 9), the space between the valves is reduced by half. Further, since there is only one connection point, the possibility of poor connection is reduced.
【００１９】図６は、本発明の接続構造を用いてバルブ
２９及びチーズ継手３０が接続されている分岐ラインを
有する配管例を示している。従来の接続構造（図１０参
照）と比較して明らかなようにバルブ２９とチーズ継手
３０との間の接続部分のデッドスペースが小さくなって
流体の滞留も低減され、配管系全体もコンパクトになっ
ている。また、図７に示すようにポンプ３１、バルブ３
２及びタンク３３を接続する場合も、従来必要であった
各部材間のチューブ等の配管が不要になり、各部材間隔
が短縮されることにより滞留部が削減され液溜まりも低
減される。FIG. 6 shows an example of piping having a branch line to which a valve 29 and a cheese joint 30 are connected by using the connection structure of the present invention. As is apparent from comparison with the conventional connection structure (see FIG. 10), the dead space of the connection portion between the valve 29 and the cheese joint 30 is reduced, fluid retention is also reduced, and the entire piping system is compact. ing. Further, as shown in FIG. 7, the pump 31, the valve 3
Even when the two and the tank 33 are connected to each other, the piping such as a tube between each member, which has been conventionally required, is not necessary, and the interval between the members is shortened, so that the retention part is reduced and the liquid pool is also reduced.
【００２０】[0020]
【発明の効果】本発明は以上のように構成したので、こ
れを利用することにより以下の優れた効果が得られる。
（１）少ないスペースでバルブ等の部材を接続すること
が可能であるので、省スペースが要求される各種装置内
部でも使用可能である。
（２）バルブ等の部材同士をチューブを介さずに直接に
接続することができるので、接続不良が低減され、さら
には、特別な治具等を用いることなく確実に接続するこ
とができるので、多くの部材を配管する場合でも作業を
短時間で行うことができる。
（３）接続部の両雄ネジ部の外径を変えることによって
ナットの向きを間違えて取付けることを防ぐことができ
る。
（４）接続部の雄ネジ部にロックナットを螺合させるこ
とよって配管の振動等によってナットが緩むことを防止
することができる。Since the present invention is constructed as described above, the following excellent effects can be obtained by utilizing it. (1) Since a member such as a valve can be connected in a small space, it can be used even in various devices requiring space saving. (2) Since members such as valves can be directly connected to each other without passing through a tube, connection failure can be reduced, and furthermore, reliable connection can be achieved without using a special jig or the like. Even when piping many members, the work can be performed in a short time. (3) By changing the outer diameters of both male screw portions of the connection portion, it is possible to prevent the nut from being attached in the wrong direction. (4) It is possible to prevent the nut from loosening due to vibration of the pipe or the like by screwing the lock nut into the male screw portion of the connecting portion.
【図１】本発明に係る部材の接続構造の一実施例（接続
前の状態）を示す縦断面図である。FIG. 1 is a vertical cross-sectional view showing an embodiment (state before connection) of a member connection structure according to the present invention.
【図２】図１の実施例の接続状態を示す縦断面図であ
る。FIG. 2 is a vertical sectional view showing a connection state of the embodiment of FIG.
【図３】本発明に係る他の実施例（接続前の状態）を示
す縦断面図である。FIG. 3 is a longitudinal sectional view showing another embodiment (state before connection) according to the present invention.
【図４】本発明に係る部材の接続構造の他の実施例を示
す縦断面図である。FIG. 4 is a vertical cross-sectional view showing another embodiment of the member connection structure according to the present invention.
【図５】本発明に係る部材の接続構造を用いた配管例を
示す正面図である。FIG. 5 is a front view showing an example of piping using the connection structure for members according to the present invention.
【図６】本発明に係る部材の接続構造を用いた分岐ライ
ンを有する配管例を示す正面図である。FIG. 6 is a front view showing an example of piping having a branch line using the connection structure for members according to the present invention.
【図７】本発明に係る部材の接続構造を用いたポンプ、
バルブ及びタンクの配管例を示す正面図である。FIG. 7 is a pump using the member connection structure according to the present invention;
It is a front view showing an example of piping of a valve and a tank.
【図８】従来の部材接続構造（接続前の状態）を示す縦
断面図である。FIG. 8 is a longitudinal sectional view showing a conventional member connection structure (state before connection).
【図９】図８の接続後の状態を示す縦断面図である。9 is a vertical cross-sectional view showing a state after connection in FIG.
【図１０】バルブ同士の接続に従来の接続構造を用いた
例を示す正面図である。FIG. 10 is a front view showing an example in which a conventional connection structure is used to connect valves.
【図１１】分岐ラインを有する配管に従来の接続構造を
用いた例を示す平面図である。FIG. 11 is a plan view showing an example in which a conventional connection structure is used for a pipe having a branch line.
１…第一部材 ２…第二部材 ３…第一雄ネジ部 ４…嵌合凸部 ５…流路 ６…第一接続部 ７…第二雄ネジ部 ８…嵌合凹部 ９…第二接続部 １０…第一雌ネジ部 １１…第二雌ネジ部 １２…ナット １３…流路 １４…第一雄ネジ部 １５…第二雄ネジ部 １６…ナット １７…第一雌ネジ部 １８…第二雌ネジ部 １９…第一接続部 ２０…第二接続部 ２１…第一雄ネジ部 ２２…ロックナット ２３…ナット ２４…第一接続部 ２５…第二接続部 ２６…第二雄ネジ部 ２７…バルブ ２８…バルブ ２９…バルブ ３０…チーズ継手 ３１…ポンプ ３２…バルブ ３３…タンク 1 ... First member 2 ... Second member 3 ... First male thread 4 ... Fitting convex part 5 ... Flow path 6 ... First connection 7 ... Second male thread 8 ... Fitting recess 9 ... Second connection 10 ... First female screw part 11 ... second female screw part 12 ... Nut 13 ... Flow path 14 ... First male screw part 15 ... Second male screw part 16 ... Nut 17 ... First female screw part 18 ... Second female screw part 19 ... First connection 20 ... Second connection 21 ... First male screw part 22 ... Lock nut 23 ... Nut 24 ... First connection part 25 ... Second connection part 26 ... Second male screw part 27 ... Valve 28 ... Valve 29 ... Valve 30 ... cheese joint 31 ... Pump 32 ... Valve 33 ... Tank
Claims (4)
（２）とをナット（１２）でもって接続するバルブ等の
部材接続構造であって、第一部材（１）には、その外周
面に第一雄ネジ部（３）と第一雄ネジ部（３）から連続
して円筒状の嵌合凸部（４）が形成されると共に、内部
に流路（５）を有する第一接続部（６）が設けられ、第
二部材（２）には、その外周面に第一雄ネジ部（３）と
逆方向に螺刻された第二雄ネジ部（７）が形成されると
共に、第二部材（２）の流路（１３）と連通された嵌合
凹部（８）を有する第二接続部（９）が設けられ、ナッ
ト（１２）の一方の内周面には、第一雄ネジ部（３）と
螺合可能な第一雌ネジ部（１０）が設けられると共に、
他方の内周面には、第二雄ネジ部（７）と螺合可能な第
二雌ネジ部（１１）が設けられ、第一部材（１）の第一
接続部（６）の嵌合凸部（４）を、第二部材（２）の第
二接続部（９）の嵌合凹部（８）に嵌合させた状態でナ
ット（１２）でもって螺着してなることを特徴とするバ
ルブ等の部材接続構造。1. A member connection structure such as a valve for connecting a first member (1) and a second member (2) to be connected with a nut (12), wherein the first member (1) comprises: A cylindrical fitting convex portion (4) is formed continuously from the first male screw portion (3) and the first male screw portion (3) on the outer peripheral surface thereof, and has a channel (5) inside. A first connecting portion (6) is provided, and a second male screw portion (7) is formed on the outer peripheral surface of the second member (2) in the opposite direction to the first male screw portion (3). And a second connecting portion (9) having a fitting recess (8) communicating with the flow path (13) of the second member (2) is provided, and one inner peripheral surface of the nut (12) is provided. Is provided with a first female screw portion (10) that can be screwed into the first male screw portion (3),
The other inner peripheral surface is provided with a second female threaded portion (11) that can be screwed into the second male threaded portion (7), and is fitted with the first connection portion (6) of the first member (1). The convex portion (4) is screwed with a nut (12) in a state of being fitted into the fitting concave portion (8) of the second connecting portion (9) of the second member (2). A structure for connecting members such as valves.
とのネジ外径を異ならせたことを特徴とする請求項１記
載のバルブ等の部材接続構造。2. A first male screw part (3) and a second male screw part (7).
2. The member connection structure for a valve or the like according to claim 1, wherein the outer diameters of the screws are different.
（７）の少なくとも一方にロックナット（２２）が螺合
されていることを特徴とする請求項１又は請求項２に記
載のバルブ等の部材接続構造。3. The lock nut (22) is screwed to at least one of the first male screw portion (3) and the second male screw portion (7). Member connection structure such as the described valve.
ク、継ぎ手であることを特徴とする請求項１乃至請求項
３のいずれかに記載のバルブ等の部材接続構造。4. The member connecting structure for a valve or the like according to claim 1, wherein the members to be connected are a valve, a pump, a tank, and a joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001220563A JP2003028354A (en) | 2001-07-19 | 2001-07-19 | Connecting structure for member such as valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001220563A JP2003028354A (en) | 2001-07-19 | 2001-07-19 | Connecting structure for member such as valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003028354A true JP2003028354A (en) | 2003-01-29 |
Family
ID=19054365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001220563A Pending JP2003028354A (en) | 2001-07-19 | 2001-07-19 | Connecting structure for member such as valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003028354A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4734421U (en) * | 1971-05-14 | 1972-12-16 | ||
| JPS5483116A (en) * | 1977-12-16 | 1979-07-03 | Mitsubishi Heavy Ind Ltd | Quick attachment and detachment joint |
| JPS54123732A (en) * | 1978-03-18 | 1979-09-26 | Ichirou Maruyama | High pressure gas vessel valve that prevent leakage of gas and do not unfasten |
| JPS5671578U (en) * | 1980-11-06 | 1981-06-12 | ||
| JPS6052488U (en) * | 1983-09-20 | 1985-04-12 | ニツタン株式会社 | adjustment socket |
| JPH04119285A (en) * | 1990-09-04 | 1992-04-20 | Toyota Autom Loom Works Ltd | Pipe joint hydraulic piping |
| JPH0515614A (en) * | 1991-07-15 | 1993-01-26 | Nohmi Bosai Ltd | Branch joint for sprinkler head |
| JP2000179760A (en) * | 1998-12-21 | 2000-06-27 | Mikio Omori | Thread locking device and connector pipe with thread locking device |
-
2001
- 2001-07-19 JP JP2001220563A patent/JP2003028354A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4734421U (en) * | 1971-05-14 | 1972-12-16 | ||
| JPS5483116A (en) * | 1977-12-16 | 1979-07-03 | Mitsubishi Heavy Ind Ltd | Quick attachment and detachment joint |
| JPS54123732A (en) * | 1978-03-18 | 1979-09-26 | Ichirou Maruyama | High pressure gas vessel valve that prevent leakage of gas and do not unfasten |
| JPS5671578U (en) * | 1980-11-06 | 1981-06-12 | ||
| JPS6052488U (en) * | 1983-09-20 | 1985-04-12 | ニツタン株式会社 | adjustment socket |
| JPH04119285A (en) * | 1990-09-04 | 1992-04-20 | Toyota Autom Loom Works Ltd | Pipe joint hydraulic piping |
| JPH0515614A (en) * | 1991-07-15 | 1993-01-26 | Nohmi Bosai Ltd | Branch joint for sprinkler head |
| JP2000179760A (en) * | 1998-12-21 | 2000-06-27 | Mikio Omori | Thread locking device and connector pipe with thread locking device |
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