JP3397954B2 - Water stopping structure of pipe mounting member - Google Patents
Water stopping structure of pipe mounting memberInfo
- Publication number
- JP3397954B2 JP3397954B2 JP29350595A JP29350595A JP3397954B2 JP 3397954 B2 JP3397954 B2 JP 3397954B2 JP 29350595 A JP29350595 A JP 29350595A JP 29350595 A JP29350595 A JP 29350595A JP 3397954 B2 JP3397954 B2 JP 3397954B2
- Authority
- JP
- Japan
- Prior art keywords
- connector
- foam
- packing
- outer connector
- flange
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Installation Of Indoor Wiring (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Bolts, Nuts, And Washers (AREA)
- Gasket Seals (AREA)
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、管取付部に発泡体
パッキンを用いて良好な水密性を得た管取付部材の止水
構造に関する。
【０００２】
【従来の技術】マンホールの壁部（固定部）に配電線保
護用波付管を取付けるには、図２に示すように、前記壁
部２０に開けた貫通孔２１に内コネクタ４０を挿通し、
内コネクタ４０の外周に彫られたネジ溝に外コネクタ４
１の内周に彫られたネジ溝を螺合しネジ締めして固定し
たのち、前記外コネクタ４１に配電線保護用波付管４３
を取付ける。ここで、内コネクタ４０と外コネクタ４１
のそれぞれの一端に鍔部５０、５１が各々形成されてお
り、両コネクタ４０、４１を螺合しネジ締めすることに
より前記各々の鍔部５０、５１が壁部２０を押圧して、
両コネクタ４０、４１が壁部２０に固定される。前記各
々の鍔部５０、５１と壁部２０との間には板状のゴムパ
ッキン３１が配され壁部２０の両側間の水密性が保持さ
れている。しかし、壁部２０の表面が粗い場合は、ゴム
パッキン３１では隙間（壁部表面の凹部）を完全に埋め
られず、十分な水密性が得られなかった。そこで、壁部
表面の凹部をエポキシパテを充填して埋めておく方法が
提案された。しかし、この方法では、エポキシパテを充
填するという余分な工程を要し、作業性に問題があっ
た。このようなことから、パッキンに、ゴムに水膨張性
材料を配合した材料で作られた水膨張リングを用いて、
水の通り道を膨張したリングで塞ぐ方法が提案された。
しかし、この水膨張リングは、高価であった。
【０００３】
【発明が解決しようとする課題】このようなことから、
本発明者等は、この水膨張ゴムリングの代わりに発泡体
（例えば、膨潤樹脂を含有するポリウレタン発泡体）を
使用することを思い付いた。そして、コネクタの鍔部よ
り小径のリング状の発泡体パッキンを試作し用いてみ
た。しかし、この発泡体パッキン３０は、素材が柔らか
い為、図３イに示すように外コネクタ４１をネジ込む際
の鍔部５１の回転で鍔部５１に巻込まれたり、鍔部５１
から外れたり、リング形状が崩れたりして、パッキンと
しての役目を果たせなかった。 そこで、発泡体パッキ
ン３０の径Ｄを鍔部51の径ｄより大きくしてみたが、今
度は、図３ロに示すように、ネジ込みの際に、発泡体パ
ッキン３０が裂けたりして水密性が損なわれた。これら
の不具合は、丁寧に作業を行えば、防げることもあった
が、建築現場や土木現場では、施工を管理することは難
しく、水密性をうたった商品化はできなかった。本発明
の目的は、作業者による差異がなく、良好な水密性が確
実に得られる発泡体パッキンを用いたネジ部の止水構造
を提供することにある。
【０００４】
【課題を解決するための手段】本発明は、マンホールの
壁部に開けた貫通孔に内コネクタを挿通し、内コネクタ
の外周に形成されたネジ溝に外コネクタの内周に形成さ
れたネジ溝を螺合しネジ締めして固定したのち、前記外
コネクタに管を取付ける管取付部材の外コネクタの鍔部
と壁部との間の止水構造であって、前記外コネクタの鍔
部と壁部との間 に挟む発泡体パッキンが、前記外コネク
タの鍔部の発泡体パッキンとの接触部より外にはみ出る
大きさに形成され、前記外コネクタの鍔部の発泡体パッ
キンと接触する面の外周側端部の角が面取りされている
ことを特徴とする管取付部材の止水構造である。ここ
で、面取りとは面と面とが交わる角に斜面又は丸みを付
けることを意味する。斜面は、面と面とのなす内角θが
鈍角になるように形成するのが好ましい。
【０００５】本発明では、発泡体パッキンが、外コネク
タの鍔部の発泡体パッキンとの接触部より外にはみ出る
大きさに形成されているので、外コネクタの締付けによ
り発泡体パッキンが、外コネクタの鍔部に巻込まれた
り、外れたり、形状不良を起こしたりすることがない。
又外コネクタの鍔部の発泡体パッキンと接触する面の外
周側先端部の角に面取り加工が施されているので、発泡
体パッキンの表面が鍔により傷付いたり裂けたりするこ
とがない。従って、作業者により差異がなく、良好な水
密性が確実に得られる。
【０００６】本発明において、発泡体パッキンには任意
の発泡体が使用できる。特に、シート状の水膨潤性ポリ
ウレタン発泡体は、安価な上、耐水圧特性に優れ、厚さ
を半分に圧縮することにより約０．０４ＭＰａまでの水
圧に耐える。本発明において、外コネクタの鍔部の発泡
体パッキンと接触する面の少なくとも外周側端部の角を
面取りする際の丸み（Ｒ）の程度やテーパー角度は、用
いる発泡体パッキンの材質により適宜選定される。
【０００７】
【発明の実施の形態】以下に本発明の実施の形態を図を
参照して具体的に説明する。図１は、本発明の止水構造
の実施形態を示す縦断面図である。図１は、図２に示し
た外コネクタの部分拡大図である。外コネクタ４１の発
泡体パッキン３０と接触する面の外周側端部の角に内角
θが鈍角のテーパーが形成されている。この例では、発
泡体パッキン３０は、外コネクタ４１の鍔部５１の発泡
体パッキン３０との接触部より外にはみ出る大きさに形
成されている（発泡体パッキン３０の径Ｄ＞外コネクタ
４１の鍔部５１の発泡体パッキン３０との接触部の径
ｄ）ので、発泡体パッキン３０が外コネクタ４１の鍔部
５１に巻込まれるようなことがない。又前記鍔部５１の
発泡体パッキン３０と接触する面５６は回転しながら、
発泡体パッキン３０の中央部を圧縮するが、外コネクタ
４１の前記外周側端部の角に内角θが鈍角のテーパーが
形成されているので、発泡体パッキン３０が傷付いたり
裂けたりしない。
【０００８】
【発明の効果】以上に述べたように、本発明の止水構造
は、発泡体パッキンを外コネクタの鍔部の発泡体パッキ
ンとの接触部より外にはみ出る大きさに形成し、且つ外
コネクタの鍔部の発泡体パッキンと接触する面の端部の
角を面取りしたので、発泡体からなるパッキンを用いて
も、作業者による差異がなく、良好な水密性を確実に発
揮する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foam
The present invention relates to a water stopping structure of a pipe mounting member that obtains good water tightness using packing . [0002] To attach the distribution line protection with a wave tube in the wall of the Related Art Ma Nho Le (fixing portion), as shown in FIG. 2, the inner to the through hole 21 bored in the wall portion 20 Insert the connector 40,
The outer connector 4 is inserted into the thread groove carved on the outer periphery of the inner connector 40.
After screwing a screw groove formed on the inner circumference of the first connector 1 and fixing it by screwing, a corrugated pipe 43 for distribution line protection is connected to the outer connector 41.
Install. Here, the inner connector 40 and the outer connector 41
A flange 50, 51 is formed at one end of each of them, and the respective flanges 50, 51 press against the wall 20 by screwing and tightening the connectors 40, 41,
Both connectors 40 and 41 are fixed to the wall 20. A plate-like rubber packing 31 is disposed between each of the flanges 50 and 51 and the wall 20 to maintain watertightness between both sides of the wall 20. However, when the surface of the wall portion 20 was rough, the gaps (concave portions on the surface of the wall portion) were not completely filled by the rubber packing 31, and sufficient watertightness was not obtained. Therefore, a method has been proposed in which the recesses on the wall surface are filled with epoxy putty and filled. However, this method requires an extra step of filling with an epoxy putty, and has a problem in workability. For this reason, using a water expansion ring made of a material in which rubber is mixed with a water expansion material for packing,
A method has been proposed to block the water path with an expanded ring.
However, this water expansion ring was expensive. [0003] In view of the above,
The present inventors have conceived of using a foam (for example, a polyurethane foam containing a swelling resin) instead of the water-swelling rubber ring. Then, a ring-shaped foam packing smaller in diameter than the flange portion of the connector was prototyped and used. However, the foam gasket 30, since the material is soft, or caught in the flange portion 51 by the rotation of the flange 51 when screwing the outer connector 41, as shown in FIG. 3 b, the flange portion 51
It could not function as a packing because it came off or the ring shape collapsed. Therefore, although the diameter D of the foam gasket 30 tried to greater than the diameter d of the flange 51, in turn, as shown in FIG. 3 (b), during the screwing, and tearing the foam gasket 30 watertight Sex was impaired. These problems could be prevented by careful work, but it was difficult to manage construction work on construction sites and civil engineering sites, and it was not possible to commercialize watertightness. An object of the present invention is to provide a water stopping structure for a screw portion using a foam packing that can reliably obtain good water tightness without any difference between operators. SUMMARY OF THE INVENTION The present invention relates to a manhole.
Insert the inner connector into the through hole opened in the wall,
Formed on the inner circumference of the outer connector in the screw groove formed on the outer circumference of
After screwing in the screw groove and fixing it with the screw,
Outer connector flange of pipe mounting member for mounting pipe to connector
Met water stop structure between the wall and the flange of the outer connector
The foam packing sandwiched between the part and the wall part
Protrudes from the contact part of the collar of the foam with the foam packing
It is formed in a size, and the foam package of the flange portion of the outer connector is formed.
The corner of the outer peripheral end of the surface that contacts the kin is chamfered
A water stopping structure for a pipe mounting member . Here, the chamfering means to make a slope or a round at a corner where the surface intersects. The slope is preferably formed such that an internal angle θ between the surfaces becomes an obtuse angle. [0005] In the present invention, the foam packing is formed by the outer connector.
Because it is formed protruding out size than the contact portion with the foam packing of the flange portion of the data, the foam packing by tightening the outer connector, or caught in the flange portion of the outer connector, or off, the shape defect It does not cause or.
Also because it is chamfered at the corners of the outer peripheral side leading end portion of the surface in contact with the foam packing of the flange portion of the outer connector, never the surface of the foam packing or tearing scratched by the collar. Therefore, there is no difference between operators, and good watertightness can be reliably obtained. In the present invention, any foam can be used for the foam packing. In particular, the sheet-like water-swellable polyurethane foam is inexpensive, has excellent water pressure resistance, and can withstand a water pressure of up to about 0.04 MPa by compressing its thickness in half. In the present invention, the degree of roundness (R) and the taper angle at the time of chamfering at least the corner of the outer peripheral end of the surface of the outer connector that comes into contact with the foam packing are appropriately selected depending on the material of the foam packing used. Is done. An embodiment of the present invention will be specifically described below with reference to the drawings. Figure 1 is a water stop structure of the present invention
It is a longitudinal sectional view showing the embodiment shaped state. Figure 1 is a partially enlarged view of the outer connector shown in FIG. Interior angle at the corner of the outer peripheral end of the surface in contact with the outer connector 4 1 foam packing 30 theta is obtuse taper is formed. In this example, the foam packing 30 is formed to have a size that protrudes from the contact portion of the flange 51 of the outer connector 41 with the foam packing 30 (the diameter D of the foam packing 30> the outer connector 41). Since the diameter d) of the contact portion of the flange portion 51 with the foam packing 30, the foam packing 30 does not get caught in the flange portion 51 of the outer connector 41. Also, the surface 56 of the flange 51 that comes into contact with the foam packing 30 rotates while rotating.
Although the center of the foam packing 30 is compressed, the foam packing 30 is not damaged or torn because the taper at which the inner angle θ is obtuse is formed at the corner of the outer peripheral end of the outer connector 41. As described above, in the waterproof structure according to the present invention, the foam packing is formed so as to protrude outside the contact portion of the flange of the outer connector with the foam packing. And outside
Since the corner of the end of the connector flange that comes into contact with the foam packing is chamfered, even if a packing made of foam is used, there is no difference between operators and good water tightness is reliably exhibited.
【図面の簡単な説明】
【図１】本発明の発泡体パッキンを用いた外コネクタの
鍔部の止水構造の実施形態を示す縦断面図である。
【図２】配電線保護用波付管の壁部における止水構造の
説明図である。
【図３】従来の発泡体パッキンを用いた外コネクタの鍔
部の止水構造の説明図である。
【符号の説明】
２０ 表面が粗な壁部
２１ 壁部に開けた貫通孔
３０ 発泡体パッキン
３１ ゴムパッキン
４０ 内コネクタ
４１ 外コネクタ
４３ 配電線保護用波付管
５０ 内コネクタの鍔部
５１ 外コネクタの鍔部
５６ 外コネクタ鍔部の発泡体パッキンと接触する面BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an outer connector using a foam packing of the present invention.
It is a longitudinal sectional view showing an embodiment form status of the water stop structure of the flange portion. FIG. 2 is an explanatory view of a water blocking structure in a wall of a corrugated pipe for protecting distribution lines. FIG. 3 is a flange of an outer connector using a conventional foam packing.
It is explanatory drawing of the water stop structure of a part . [Description of Signs] 20 Wall portion 21 with rough surface 21 Through hole 30 formed in wall portion Foam packing 31 Rubber packing 40 Inner connector 41 Outer connector 43 Corrugated tube 50 for distribution line protection Inner connector flange 51 Outer connector The surface of the outer connector flange that comes into contact with the foam packing.
フロントページの続き (56)参考文献 特開 昭53−56719（ＪＰ，Ａ) 実開 昭64−32911（ＪＰ，Ｕ) 実開 平６−43320（ＪＰ，Ｕ) 実開 昭54−179358（ＪＰ，Ｕ) 実開 平４−108670（ＪＰ，Ｕ) 実開 昭61−188086（ＪＰ，Ｕ) 特公 昭51−4290（ＪＰ，Ｂ１) (58)調査した分野(Int.Cl.7，ＤＢ名) F16B 43/00 - 43/02 F16B 35/00 - 35/06 E02D 29/12 F16J 15/10 F16L 5/02 H02G 3/22 Continuation of the front page (56) References JP-A-53-56719 (JP, A) JP-A 64-32911 (JP, U) JP-A-6-43320 (JP, U) JP-A 54-179358 (JP) , U) JP-A 4-108670 (JP, U) JP-A-61-188086 (JP, U) JP-B 51-4290 (JP, B1) (58) Fields investigated (Int. Cl. 7 , DB) Name) F16B 43/00-43/02 F16B 35/00-35/06 E02D 29/12 F16J 15/10 F16L 5/02 H02G 3/22
Claims (1)
ネクタを挿通し、内コネクタの外周に形成されたネジ溝
に外コネクタの内周に形成されたネジ溝を螺合しネジ締
めして固定したのち、前記外コネクタに管を取付ける管
取付部材の外コネクタの鍔部と壁部との間の止水構造で
あって、前記外コネクタの鍔部と壁部との間に挟む発泡
体パッキンが、前記外コネクタの鍔部の発泡体パッキン
との接触部より外にはみ出る大きさに形成され、前記外
コネクタの鍔部の発泡体パッキンと接触する面の外周側
端部の角が面取りされていることを特徴とする管取付部
材の止水構造。(57) [Claims] [Claim 1] An inner hole is formed in a through hole formed in a wall of a manhole.
Threaded through the connector and formed on the outer circumference of the inner connector
Into the screw groove formed on the inner circumference of the outer connector
After fixing the pipe, attach the pipe to the outer connector.
In water stop structure between the flange portion of the outer connector and the wall portion of the mounting member
And foam sandwiched between the flange portion and the wall portion of the outer connector.
The body packing is a foam packing of a flange portion of the outer connector.
Formed so as to protrude outside the contact portion with the
Outer side of the surface of the connector flange that comes into contact with the foam packing
Tube mounting part characterized in that the corner of the end is chamfered
Waterproof structure of the material .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29350595A JP3397954B2 (en) | 1995-10-17 | 1995-10-17 | Water stopping structure of pipe mounting member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29350595A JP3397954B2 (en) | 1995-10-17 | 1995-10-17 | Water stopping structure of pipe mounting member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09112530A JPH09112530A (en) | 1997-05-02 |
| JP3397954B2 true JP3397954B2 (en) | 2003-04-21 |
Family
ID=17795614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29350595A Expired - Fee Related JP3397954B2 (en) | 1995-10-17 | 1995-10-17 | Water stopping structure of pipe mounting member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3397954B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008014455A (en) * | 2006-07-07 | 2008-01-24 | Kyowa Rubber Kk | Tube joint structure |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005036962A (en) * | 2003-06-30 | 2005-02-10 | Fujiwa Shokai:Kk | Fastener with washer |
| JP2015053177A (en) * | 2013-09-06 | 2015-03-19 | 矢崎総業株式会社 | Connector |
-
1995
- 1995-10-17 JP JP29350595A patent/JP3397954B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008014455A (en) * | 2006-07-07 | 2008-01-24 | Kyowa Rubber Kk | Tube joint structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09112530A (en) | 1997-05-02 |
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