JP2007312458A - Watertight joint - Google Patents

Watertight joint Download PDF

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JP2007312458A
JP2007312458A JP2006136276A JP2006136276A JP2007312458A JP 2007312458 A JP2007312458 A JP 2007312458A JP 2006136276 A JP2006136276 A JP 2006136276A JP 2006136276 A JP2006136276 A JP 2006136276A JP 2007312458 A JP2007312458 A JP 2007312458A
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cylindrical
rubber member
diameter portion
diameter
hole
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JP4833730B2 (en
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Norio Otsuga
則男 大津賀
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SANRITSU GIKEN KK
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SANRITSU GIKEN KK
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  • Laying Of Electric Cables Or Lines Outside (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a watertight joint exhibiting excellent aseismatic properties and ensuring high water tightness. <P>SOLUTION: In the watertight joint J, a tubular rubber member 3 is fitted in a cut hole 21 from a hole 20, a tubular spacer 4 is driven into the tubular rubber member 3 from the hole 20 by means of a hammer, a cable protecting tube 5 is inserted, and then a stainless band 6 is fastened thus securing the cable protecting tube 5 to the tubular rubber member 3. Consequently, the tubular rubber member 3 is secured firmly to the sidewall w and high water tightness can be ensured. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、敷設した光ファイバーや電力ケーブル等をハンドホール内へ引き込む際に用いる水密ジョイントに関する。   The present invention relates to a watertight joint used when a laid optical fiber, a power cable, or the like is drawn into a handhole.

地中埋設管を接続する接続用継手は、モルタルや接着剤等によりハンドホールの貫通孔に固定されている（特許文献１）。
地中埋設管を接続する筒状体は、接着剤によりハンドホールの貫通孔に固定されている（特許文献２）。
特開平１０−２４３５３８号公報 特開２００２−１９５４６０号公報 A connection joint for connecting underground pipes is fixed to a through hole of a hand hole with mortar, an adhesive, or the like (Patent Document 1).
The cylindrical body that connects the underground pipe is fixed to the through hole of the hand hole with an adhesive (Patent Document 2).
Japanese Patent Laid-Open No. 10-243538 JP 2002-195460 A

上記特許文献１、２の技術は、以下の課題を有する。
接続用継手や筒状体を貫通孔に固定するのにモルタル等を使う必要があるので熟練を要する。
地震や車両等による振動が継手に加わると、接続用継手や筒状体を貫通孔に固定するモルタル等が破損したりヒビが入る。この場合には、電力ケーブル等が損傷したり、ヒビを介して地下水がハンドホールに浸入する。
継手は、可とう性が低いので、電力ケーブルやハンドホールの変位に追従できない。
本発明の目的は、耐震性に優れ、高い水密性が得られる水密ジョイントの提供にある。 The techniques of Patent Documents 1 and 2 have the following problems.
Skill is required because it is necessary to use mortar or the like to fix the connecting joint or cylindrical body to the through hole.
When vibration due to an earthquake or a vehicle is applied to the joint, the connecting joint and the mortar for fixing the tubular body to the through hole are damaged or cracked. In this case, the power cable or the like is damaged, or groundwater enters the handhole through cracks.
Since the joint has low flexibility, it cannot follow the displacement of the power cable or hand hole.
An object of the present invention is to provide a watertight joint that is excellent in earthquake resistance and can obtain high watertightness.

（請求項１について）
コンクリート製の構造物の側壁に設けた取付穴へ地中埋設管を水密的に連結するための水密ジョイントは、先端の径小部、基端の鍔部、および中間の径大部を有する筒状弾性部材と、先端のテーパ状部、基端の鍔状部、および中間の筒状部を有する硬質の筒状スペーサーとを備える。 (About claim 1)
A watertight joint for watertightly connecting an underground pipe to a mounting hole provided in a side wall of a concrete structure is a cylinder having a small diameter portion at the tip, a flange portion at the base end, and a large diameter portion at the middle. And a rigid cylindrical spacer having a tapered portion at the distal end, a flange portion at the proximal end, and an intermediate tubular portion.

径大部外面が取付穴壁に密着し、取付穴の内側穴角に鍔部が係止される様に、構造物内から取付穴内へ筒状弾性部材を嵌め込む。
つぎに、筒状部が径大部内に圧入され、鍔状部が鍔部に係止される様に、構造物内から筒状弾性部材内に筒状スペーサーをハンマー等で打ち込む。なお、筒状スペーサーの筒状部の外径が、筒状弾性部材の径大部の内径より若干大きいので、筒状スペーサーの打込時に、筒状弾性部材の径大部が拡張し、筒状弾性部材および筒状スペーサーが強固に取付穴に固定される。 The cylindrical elastic member is fitted from the inside of the structure into the mounting hole so that the outer surface of the large diameter portion is in close contact with the mounting hole wall and the flange is locked to the inner hole corner of the mounting hole.
Next, a cylindrical spacer is driven into the cylindrical elastic member with a hammer or the like from the structure so that the cylindrical portion is press-fitted into the large-diameter portion and the flange-like portion is locked to the flange portion. Since the outer diameter of the cylindrical portion of the cylindrical spacer is slightly larger than the inner diameter of the large diameter portion of the cylindrical elastic member, when the cylindrical spacer is driven, the large diameter portion of the cylindrical elastic member expands, The elastic member and the cylindrical spacer are firmly fixed to the mounting hole.

そして、先端が構造物内に臨む様に筒状弾性部材および筒状スペーサー内に地中埋設管を挿入し、筒状弾性部材の径小部外周に配した締付具を締め付けて地中埋設管を筒状弾性部材に固定する。   Then, the underground tube is inserted into the cylindrical elastic member and the cylindrical spacer so that the tip faces the structure, and the clamp placed on the outer periphery of the small-diameter portion of the cylindrical elastic member is tightened to be embedded in the ground. The tube is fixed to the cylindrical elastic member.

また、筒状弾性部材の径小部外周に配した締付具で地中埋設管を筒状弾性部材に固定している。このため、地中埋設管と筒状弾性部材との間、および、筒状弾性部材とコンクリート製の構造物との間で、高い水密性が確保できる。   Moreover, the underground pipe | tube is being fixed to the cylindrical elastic member with the fastening tool distribute | arranged to the small diameter outer periphery of the cylindrical elastic member. For this reason, high watertightness can be secured between the underground tube and the cylindrical elastic member, and between the cylindrical elastic member and the concrete structure.

コンクリート製の構造物の側壁に設けた取付穴へ、筒状弾性部材を介して地中埋設管を連結しているので可とう性に優れる。
このため、地震や車両等による振動が、コンクリート製の構造物や地中埋設管に加わっても、水密ジョイントが追従して変形するので、構造物や地中埋設管の破損が防止できるとともに、水密性も保たれる。また、車両等による振動や、施工工事により、地中埋設管や構造物の位置が若干ずれても、水密ジョイントが追従して変形するので、地中埋設管等の破損が防止できるとともに、水密性も保たれる。 Since the underground pipe is connected to the mounting hole provided in the side wall of the concrete structure via the cylindrical elastic member, the flexibility is excellent.
For this reason, even if vibrations caused by earthquakes or vehicles are applied to concrete structures and underground pipes, the watertight joint follows and deforms, preventing damage to the structures and underground pipes, Watertightness is also maintained. In addition, even if the underground pipes and structures are slightly displaced due to vibrations caused by vehicles or construction work, the watertight joint will follow and be deformed. Sex is also maintained.

構造物内から筒状弾性部材を取付穴内へ嵌め込み、筒状スペーサーを筒状弾性部材内に打ち込み、地中埋設管を挿入して締付具により筒状弾性部材に固定するだけで良いので、施工が簡単であり、熟練を要しない。   Since it is only necessary to fit the cylindrical elastic member from the inside of the structure into the mounting hole, drive the cylindrical spacer into the cylindrical elastic member, insert the underground tube and fix it to the cylindrical elastic member with the fastening tool, Construction is simple and skill is not required.

水密ジョイントは、取付穴の径に対応する筒状弾性部材および筒状スペーサーを選択することにより、取付穴の径の大小を問わず、適用することができる。   The watertight joint can be applied regardless of the diameter of the mounting hole by selecting a cylindrical elastic member and a cylindrical spacer corresponding to the diameter of the mounting hole.

（請求項２について）
ハンドホールの側壁に設けた円形の取付穴へ断面円形のケーブル保護管を水密的に連結するための水密ジョイントは、先端の径小部、基端の鍔部、および中間の径大部を有する円筒ゴム部材と、先端のテーパ状部、基端の鍔状部、および中間の円筒状部を有する樹脂製の円筒スペーサーとを備える。 (About claim 2)
A watertight joint for watertightly connecting a cable protection tube having a circular cross section to a circular mounting hole provided on a side wall of a handhole has a small diameter portion at the distal end, a flange portion at the proximal end, and a large diameter portion at the middle. A cylindrical rubber member, and a resin-made cylindrical spacer having a tapered portion at the distal end, a flange portion at the proximal end, and an intermediate cylindrical portion.

径大部外面が取付穴壁に密着し、取付穴の内側穴角に鍔部が係止される様にハンドホール内から取付穴内へ円筒ゴム部材を嵌め込む。
つぎに、円筒状部が径大部内に圧入され、鍔状部が鍔部に係止される様に、ハンドホール内から円筒ゴム部材内に円筒スペーサーをハンマー等で打ち込む。なお、円筒スペーサーの円筒状部の外径が、円筒ゴム部材の径大部の内径より若干大きいので、円筒スペーサーの打込時に、円筒ゴム部材の径大部が拡径し、円筒ゴム部材および円筒スペーサーが強固に取付穴に固定される。 The cylindrical rubber member is fitted from the inside of the hand hole into the mounting hole so that the outer surface of the large-diameter portion is in close contact with the mounting hole wall and the flange is locked to the inner hole corner of the mounting hole.
Next, a cylindrical spacer is driven into the cylindrical rubber member from the hand hole with a hammer or the like so that the cylindrical portion is press-fitted into the large-diameter portion and the hook-shaped portion is locked to the hook portion. Since the outer diameter of the cylindrical portion of the cylindrical spacer is slightly larger than the inner diameter of the large diameter portion of the cylindrical rubber member, when the cylindrical spacer is driven, the large diameter portion of the cylindrical rubber member expands, and the cylindrical rubber member and The cylindrical spacer is firmly fixed to the mounting hole.

そして、先端がハンドホール内に臨む様に円筒ゴム部材および円筒スペーサー内にケーブル保護管を挿入し、円筒ゴム部材の径小部外周に配した締付具を締め付けてケーブル保護管を円筒ゴム部材に固定する。   Then, the cable protection tube is inserted into the cylindrical rubber member and the cylindrical spacer so that the tip faces the hand hole, and the cable protection tube is fixed to the cylindrical rubber member by tightening the fastening tool disposed on the outer periphery of the small diameter portion of the cylindrical rubber member. To fix.

また、円筒ゴム部材の径小部外周に配した締付具でケーブル保護管を円筒ゴム部材に固定している。このため、ケーブル保護管と円筒スペーサーとの間、および、円筒ゴム部材とハンドホールとの間で、高い水密性が確保できる。   Further, the cable protective tube is fixed to the cylindrical rubber member by a fastener disposed on the outer periphery of the small diameter portion of the cylindrical rubber member. For this reason, high watertightness can be ensured between the cable protection tube and the cylindrical spacer and between the cylindrical rubber member and the hand hole.

ハンドホールの側壁に設けた取付穴へ、円筒ゴム部材を介してケーブル保護管を連結しているので可とう性に優れる。
このため、地震や車両等による振動が、ハンドホールやケーブル保護管に加わっても、水密ジョイントが追従して変形するので、ハンドホールやケーブル保護管の破損が防止できるとともに、水密性も保たれる。また、車両等による振動や、施工工事により、ケーブル保護管やハンドホールの位置が若干ずれても、水密ジョイントが追従して変形するので、ケーブル保護管等の破損が防止できるとともに、水密性も保たれる。 Since the cable protection tube is connected to the mounting hole provided on the side wall of the hand hole via the cylindrical rubber member, the flexibility is excellent.
For this reason, even if vibration due to an earthquake or a vehicle is applied to the handhole or cable protection pipe, the watertight joint follows and deforms, so that the handhole and cable protection pipe can be prevented from being damaged, and the watertightness is also maintained. It is. In addition, even if the position of the cable protection tube or hand hole is slightly shifted due to vibration from the vehicle or construction work, the watertight joint will follow and deform, so that the cable protection tube etc. can be prevented from being damaged and watertight. Kept.

ハンドホール内から円筒ゴム部材を取付穴内へ嵌め込み、円筒スペーサーを円筒ゴム部材内に打ち込み、ケーブル保護管を挿入して締付具により円筒ゴム部材に固定するだけで良いので、施工が簡単であり、熟練を要しない。   Simply insert the cylindrical rubber member into the mounting hole from inside the hand hole, drive the cylindrical spacer into the cylindrical rubber member, insert the cable protection tube, and fix it to the cylindrical rubber member with a fastener, making construction easy Does not require skill.

水密ジョイントは、取付穴の径に対応する円筒ゴム部材および筒状スペーサーを選択することにより、取付穴の径の大小を問わず、適用することができる。   The watertight joint can be applied regardless of the diameter of the mounting hole by selecting a cylindrical rubber member and a cylindrical spacer corresponding to the diameter of the mounting hole.

（請求項３について）
ハンドホール内から円筒ゴム部材を取付穴へ嵌め込む前に、筒状弾性部材の径大部外面に板状ゴムを周設しておく。
円筒ゴム部材を取付穴へ嵌め込む際に、板状ゴムと円筒ゴム部材とが強固に圧着するため、円筒ゴム部材とハンドホールとの間で、高い水密性および可とう性が確保できる。 (Claim 3)
Before the cylindrical rubber member is fitted into the mounting hole from within the hand hole, a plate-like rubber is provided around the outer surface of the large-diameter portion of the cylindrical elastic member.
When the cylindrical rubber member is fitted into the mounting hole, the plate-like rubber and the cylindrical rubber member are firmly pressed together, so that high water tightness and flexibility can be ensured between the cylindrical rubber member and the hand hole.

（請求項４について）
円筒ゴム部材は、径大部と径小部との間に、内外径が連続的に小さくなっていく漸減径部を有する。
円筒ゴム部材の内外径が、径小部の内外径に等しい等径構造であると、円筒スペーサーを円筒ゴム部材内に打ち込んでも円筒ゴム部材が充分に拡径せず、円筒ゴム部材とハンドホールとの間で高い水密性が得られない。
また、円筒ゴム部材の内外径が、径大部の内外径に等しい等径構造であると、締付具を締め付けても円筒ゴム部材が充分に縮径せず、挿入したケーブル保護管と円筒ゴム部材との間で高い水密性が得られない。
漸減径部の存在により、ケーブル保護管と円筒ゴム部材の径小部との間、円筒ゴム部材の径大部とハンドホールとの間で、高い水密性が確保できる。 (About claim 4)
The cylindrical rubber member has a gradually decreasing diameter portion whose inner and outer diameters are continuously reduced between the large diameter portion and the small diameter portion.
If the inner and outer diameters of the cylindrical rubber member are equal in diameter to the inner and outer diameters of the small diameter portion, the cylindrical rubber member will not expand sufficiently even if the cylindrical spacer is driven into the cylindrical rubber member, and the cylindrical rubber member and hand hole High watertightness cannot be obtained.
Further, when the inner and outer diameters of the cylindrical rubber member have the same diameter structure as the inner and outer diameters of the large diameter portion, the cylindrical rubber member does not sufficiently reduce the diameter even when the fastener is tightened, and the inserted cable protection tube and cylinder High watertightness cannot be obtained with the rubber member.
Due to the presence of the gradually decreasing diameter portion, high water tightness can be secured between the cable protection tube and the small diameter portion of the cylindrical rubber member and between the large diameter portion of the cylindrical rubber member and the hand hole.

円筒スペーサーのテーパ状部は、外径が連続的に小さくなっていくテーパ面を有するので、円筒ゴム部材内へ円筒スペーサーを打ち込む際に、テーパ面が径大部内面を円滑に滑って嵌め込めるので、容易に打ち込むことができる。なお、円筒スペーサーの円筒状部の外径が、円筒ゴム部材の径大部の内径より若干大きいので、円筒スペーサーの打込時に、円筒ゴム部材の径大部が拡径する。   Since the tapered portion of the cylindrical spacer has a tapered surface whose outer diameter continuously decreases, when the cylindrical spacer is driven into the cylindrical rubber member, the tapered surface can smoothly slide into the inner surface of the large-diameter portion. So you can easily drive in. Since the outer diameter of the cylindrical portion of the cylindrical spacer is slightly larger than the inner diameter of the larger diameter portion of the cylindrical rubber member, the larger diameter portion of the cylindrical rubber member is expanded when the cylindrical spacer is driven.

（請求項５について）
円筒スペーサーのテーパ状部の内径を、円筒状部の内径より大きくしているので、先端がハンドホール内に臨む様に、円筒ゴム部材および円筒スペーサー内にケーブル保護管を挿入する際に、テーパ状部の内壁にケーブル保護管が引っ掛かり難い。よって、円筒ゴム部材および円筒スペーサー内に、ケーブル保護管を容易に挿入することができる。 (Claim 5)
Since the inner diameter of the tapered portion of the cylindrical spacer is larger than the inner diameter of the cylindrical portion, when inserting the cable protection tube into the cylindrical rubber member and the cylindrical spacer so that the tip faces the hand hole, the taper is tapered. The cable protection tube is not easily caught on the inner wall of the shaped part. Therefore, the cable protection tube can be easily inserted into the cylindrical rubber member and the cylindrical spacer.

（請求項６について）
ケーブル保護管は、管壁に、凸状に盛り上がる凸部と、窪んだ凹部とが、管軸心方向に対して交互に位置する螺旋状に形成されている。円筒ゴム部材の径小部に臨む、ケーブル保護管の凹部にはゴムパッキンが嵌め込まれている。円筒ゴム部材の径小部外周には締付具が装着されている。
この締付具を締め付けることにより、止水することができる。 (About claim 6)
The cable protective tube is formed on the tube wall in a spiral shape in which convex portions that bulge in a convex shape and concave concave portions are alternately positioned with respect to the axial direction of the tube. A rubber packing is fitted in the concave portion of the cable protection tube facing the small diameter portion of the cylindrical rubber member. A fastener is attached to the outer periphery of the small diameter portion of the cylindrical rubber member.
Water can be stopped by tightening the fastener.

削穴へケーブル保護管を水密的に連結するための水密ジョイントは、円筒ゴム部材と円筒スペーサー（樹脂製）とを備える。
ハンドホール内から削穴内へ円筒ゴム部材を嵌め込み、円筒ゴム部材内に円筒スペーサーをハンマー等で打ち込む。次に、円筒スペーサー内にケーブル保護管を挿入し、円筒ゴム部材の径小部外周に配した締付具を締め付けてケーブル保護管を円筒ゴム部材に固定する。 A watertight joint for watertightly connecting a cable protection tube to a drilling hole includes a cylindrical rubber member and a cylindrical spacer (made of resin).
A cylindrical rubber member is fitted into the drilling hole from the hand hole, and a cylindrical spacer is driven into the cylindrical rubber member with a hammer or the like. Next, the cable protection tube is inserted into the cylindrical spacer, and the cable protection tube is fixed to the cylindrical rubber member by tightening a fastening tool disposed on the outer periphery of the small diameter portion of the cylindrical rubber member.

円筒ゴム部材内に円筒スペーサーを打ち込んでいるので円筒ゴム部材の径大部が拡径し、円筒ゴム部材が削穴面へ強固に圧着する。また、円筒ゴム部材の径小部外周に配した締付具でケーブル保護管を円筒ゴム部材に固定している。このため、ケーブル保護管と円筒スペーサーとの間、および、円筒ゴム部材と削穴面との間で、高い水密性が確保できる。   Since the cylindrical spacer is driven into the cylindrical rubber member, the large diameter portion of the cylindrical rubber member expands, and the cylindrical rubber member is firmly pressure-bonded to the drilling surface. Further, the cable protective tube is fixed to the cylindrical rubber member by a fastener disposed on the outer periphery of the small diameter portion of the cylindrical rubber member. For this reason, high watertightness can be ensured between the cable protection tube and the cylindrical spacer and between the cylindrical rubber member and the drilled surface.

本発明の実施例１（請求項１〜４に対応）を図１〜図３に基づいて説明する。
ハンドホールとケーブル保護管との連結構造Ａは、図１に示す如く、ハンドホール２の側壁ｗに開けた削穴２１（断面円形；φ９５）に嵌め込まれる円筒ゴム部材３と、円筒ゴム部材３内に打ち込まれる円筒スペーサー４とからなる水密ジョイントＪ内に挿入したケーブル保護管５を、円筒ゴム部材３の径小部３１の外周に配したステンレスバンド６により固定してなる。 A first embodiment (corresponding to claims 1 to 4) of the present invention will be described with reference to FIGS.
As shown in FIG. 1, the connection structure A between the handhole and the cable protection tube includes a cylindrical rubber member 3 fitted into a drilled hole 21 (circular cross section; φ95) formed in the side wall w of the handhole 2, and the cylindrical rubber member 3. A cable protection tube 5 inserted into a watertight joint J composed of a cylindrical spacer 4 to be driven therein is fixed by a stainless steel band 6 disposed on the outer periphery of a small diameter portion 31 of the cylindrical rubber member 3.

１はブチルゴムであり、円筒ゴム部材３の径大部３３の外周に、接着剤を用いて貼着されている。
コンクリート製のハンドホール２は、削穴壁（壁厚３５ｍｍ）に削穴２１（断面円形；φ９５）が開けられている。 Reference numeral 1 denotes butyl rubber, which is attached to the outer periphery of the large diameter portion 33 of the cylindrical rubber member 3 using an adhesive.
The concrete hand hole 2 has a hole 21 (circular cross section; φ95) in a hole wall (wall thickness 35 mm).

地中に埋設され、外形が四角柱を呈しホール２０の断面が円形のハンドホール２（コンクリート製）は、光ファイバーや電力線をホール２０内に引き込むためのものであり、側壁ｗに複数の削穴２１が開けられている。なお、ハンドホール２の外形は、四角柱以外に円柱であっても良い。   A hand hole 2 (concrete) embedded in the ground and having an outer shape of a quadrangular prism and a circular cross section of the hole 20 is used for drawing an optical fiber or a power line into the hole 20, and a plurality of holes are formed in the side wall w. 21 is opened. Note that the outer shape of the handhole 2 may be a cylinder other than the quadrangular prism.

円筒ゴム部材３は、凹部３０を外周に周設した先端の径小部３１と、基端の鍔部３２と、径大部３３と、径大部３３−径小部３１間に位置し、内外径が連続的に小さくなっていく漸減径部３４とを有し、径大部３３の外面がブチルゴム１の内周面に密着し、鍔部３２がホール２０側の削穴角に係止される。なお、この円筒ゴム部材３は、ホール２０内から削穴２１内へ嵌め込まれる｛図２の（ａ）参照｝。   The cylindrical rubber member 3 is located between a small-diameter portion 31 at the distal end having a recess 30 around the outer periphery, a flange portion 32 at the proximal end, a large-diameter portion 33, and a large-diameter portion 33-small-diameter portion 31. The outer diameter of the large-diameter portion 33 is in close contact with the inner peripheral surface of the butyl rubber 1, and the flange portion 32 is locked to the drilling angle on the hole 20 side. Is done. The cylindrical rubber member 3 is fitted into the hole 21 from the inside of the hole 20 (see FIG. 2A).

樹脂製の円筒スペーサー４は、外径が連続的に小さくなっていくテーパ面４０を有し、先端側に位置するテーパ状部４１と、基端側に位置する鍔状部４２と、外径（Ｄ＋α）が径大部３３の内径（Ｄ）より若干大きい中間に位置する円筒状部４３とを有する。
この円筒スペーサー４は、円筒状部４３が径大部３３内に圧入され、鍔状部４２が鍔部３２に係止される様に、ホール２０内から、ハンマーｈにより円筒ゴム部材３内に打ち込まれる｛図２の（ｂ）参照｝。 The cylindrical spacer 4 made of resin has a tapered surface 40 whose outer diameter continuously decreases, a tapered portion 41 located on the distal end side, a flange-like portion 42 located on the proximal end side, and an outer diameter (D + α) has a cylindrical portion 43 located in the middle of the large-diameter portion 33 that is slightly larger than the inner diameter (D).
The cylindrical spacer 4 is inserted into the cylindrical rubber member 3 from the hole 20 by the hammer h so that the cylindrical portion 43 is press-fitted into the large-diameter portion 33 and the flange-shaped portion 42 is locked to the flange 32. It is driven {see FIG. 2 (b)}.

可とう性を有する材質で形成されるケーブル保護管５は、管内を挿通するケーブル５１（光ファイバーや電力線等）を保護する円筒体である。このケーブル保護管５は、管壁に、凸状に盛り上がる凸部と、窪んだ凹部とを、管軸心方向に対して交互に位置する螺旋状に形成している。なお、円筒ゴム部材３の径小部３１に臨む、ケーブル保護管５の凹部にはゴムパッキン５２が嵌め込まれている。   The cable protection tube 5 formed of a flexible material is a cylindrical body that protects a cable 51 (such as an optical fiber or a power line) inserted through the tube. The cable protection tube 5 is formed with a convex portion that rises in a convex shape and a concave portion that is concave in a spiral shape alternately positioned with respect to the axial direction of the tube. A rubber packing 52 is fitted in the concave portion of the cable protection tube 5 facing the small diameter portion 31 of the cylindrical rubber member 3.

このケーブル保護管５は、先端がホール２０内に臨む様に、ホール２０外から、円筒ゴム部材３および円筒スペーサー４内に挿入され、径小部３１の凹部３０に配したステンレスバンド６により円筒ゴム部材３の径小部３１に固定される｛図２の（ａ、ｂ）参照｝。   The cable protection tube 5 is inserted into the cylindrical rubber member 3 and the cylindrical spacer 4 from the outside of the hole 20 so that the tip thereof faces the hole 20 and is cylindrically formed by the stainless steel band 6 disposed in the concave portion 30 of the small diameter portion 31. It is fixed to the small diameter portion 31 of the rubber member 3 {see (a, b) in FIG. 2}.

つぎに、水密ジョイントＪを使用した、ハンドホールとケーブル保護管との連結構造Ａの施工手順を説明する。
（１）ホール２０内から円筒ゴム部材３を削穴２１内へ嵌め込む｛図２の（ａ）参照｝。なお、径大部３３の外面がブチルゴム１の内周面に臨み、鍔部３２がホール２０側の削穴角に係止される。 Below, the construction procedure of the connection structure A of the handhole and the cable protection tube using the watertight joint J will be described.
(1) The cylindrical rubber member 3 is fitted into the hole 21 from the inside of the hole 20 {see (a) in FIG. 2}. The outer surface of the large-diameter portion 33 faces the inner peripheral surface of the butyl rubber 1, and the flange portion 32 is locked to the hole angle on the hole 20 side.

（２）ハンマーｈを用いて、ホール２０内から、円筒ゴム部材３内に円筒スペーサー４を打ち込み、鍔状部４２を鍔部３２に係止する｛図２の（ｂ）参照｝。
なお、円筒スペーサー４の円筒状部４３の外径が、円筒ゴム部材３の径大部３３の内径より若干大きいため、円筒スペーサー４を打ち込むと円筒ゴム部材３の外周が拡径し、ブチルゴム１と円筒ゴム部材３とが強固に圧着するため、円筒ゴム部材３とハンドホール２との間で、高い水密性および可とう性が確保できる。 (2) Using the hammer h, the cylindrical spacer 4 is driven into the cylindrical rubber member 3 from the hole 20 and the hook-like portion 42 is locked to the hook portion 32 (see FIG. 2B).
Since the outer diameter of the cylindrical portion 43 of the cylindrical spacer 4 is slightly larger than the inner diameter of the large-diameter portion 33 of the cylindrical rubber member 3, when the cylindrical spacer 4 is driven, the outer circumference of the cylindrical rubber member 3 expands, and the butyl rubber 1 Since the cylindrical rubber member 3 and the cylindrical rubber member 3 are firmly pressure-bonded, high water tightness and flexibility can be secured between the cylindrical rubber member 3 and the hand hole 2.

（３）緩めたステンレスバンド６を凹部３０に配し、ゴムパッキン５２を詰めたケーブル保護管５を、先端がホール２０内に臨む様に、ホール２０外から円筒ゴム部材３および円筒スペーサー４内に挿入する｛図３の（ａ）参照｝。 (3) Inside the cylindrical rubber member 3 and the cylindrical spacer 4 from the outside of the hole 20 such that the loosened stainless steel band 6 is arranged in the recess 30 and the tip of the cable protection tube 5 packed with the rubber packing 52 faces the hole 20. {See FIG. 3 (a)}.

（４）凹部３０に配したステンレスバンド６を締め付けて｛図３の（ｂ）参照｝、円筒ゴム部材３の径小部３１にケーブル保護管５を固定する（図１参照）。 (4) The stainless steel band 6 disposed in the recess 30 is tightened {see FIG. 3B} to fix the cable protection tube 5 to the small diameter portion 31 of the cylindrical rubber member 3 (see FIG. 1).

実施例１の、ハンドホールとケーブル保護管との連結構造Ａおよび水密ジョイントＪは、以下の利点を有する。
〔あ〕径大部３３の外周にブチルゴム１を貼着した円筒ゴム部材３内に、円筒スペーサー４をハンマーｈで打ち込んで径大部３３を拡径させれば、削穴２１の削穴壁へ円筒ゴム部材３が強固に圧着する。また、円筒ゴム部材３の径小部３１の凹部３０に配したステンレスバンド６により、ゴムパッキン５２を嵌め込んだケーブル保護管５が円筒ゴム部材３に固定されている。
このため、ケーブル保護管５と円筒スペーサー４との間、および、円筒ゴム部材３とハンドホール２の削穴２１の削穴壁との間で、高い水密性が確保できる。 The connection structure A and the watertight joint J between the handhole and the cable protection tube of Example 1 have the following advantages.
[A] If the cylindrical spacer 4 is driven with a hammer h into the cylindrical rubber member 3 with the outer periphery of the large-diameter portion 33 bonded to the outer periphery of the large-diameter portion 33 to expand the large-diameter portion 33, the hole wall of the hole 21 is formed. The cylindrical rubber member 3 is firmly crimped. Further, the cable protection tube 5 fitted with the rubber packing 52 is fixed to the cylindrical rubber member 3 by the stainless steel band 6 disposed in the concave portion 30 of the small diameter portion 31 of the cylindrical rubber member 3.
For this reason, high watertightness can be secured between the cable protection tube 5 and the cylindrical spacer 4 and between the cylindrical rubber member 3 and the drilled wall of the drilled hole 21 of the handhole 2.

〔い〕ハンドホール２の側壁に設けた削穴２１へ、円筒ゴム部材３を介してケーブル保護管５を連結しているので可とう性に優れる。
このため、地震や車両等による振動が、ハンドホール２やケーブル保護管５に加わっても、水密ジョイントＪが追従して変形するので、ハンドホール２やケーブル保護管５の破損が防止できるとともに、水密性も保たれる。
また、車両等による振動や、施工工事により、ケーブル保護管５やハンドホール２の位置が若干ずれても、水密ジョイントＪが追従して変形するので、ケーブル保護管５等の破損が防止できるとともに、水密性も保たれる。 [I] Since the cable protection tube 5 is connected to the hole 21 provided on the side wall of the hand hole 2 through the cylindrical rubber member 3, the flexibility is excellent.
For this reason, even if vibration due to an earthquake or a vehicle is applied to the handhole 2 or the cable protection tube 5, the watertight joint J follows and deforms, so that the handhole 2 or the cable protection tube 5 can be prevented from being damaged, Watertightness is also maintained.
In addition, even if the position of the cable protection tube 5 or the hand hole 2 is slightly shifted due to vibration caused by a vehicle or construction work, the watertight joint J follows and deforms, so that the cable protection tube 5 can be prevented from being damaged. Watertightness is also maintained.

〔う〕ハンドホール２内から円筒ゴム部材３を削穴２１内へ嵌め込み、円筒スペーサー４をハンマーｈで円筒ゴム部材３内に打ち込み、ケーブル保護管５を水密ジョイントＪ内へ挿入してステンレスバンド６で円筒ゴム部材３に固定するだけで良いので、施工が簡単であり、熟練を要しない。 [U] The cylindrical rubber member 3 is fitted into the drilling hole 21 from the hand hole 2, the cylindrical spacer 4 is driven into the cylindrical rubber member 3 with a hammer h, and the cable protection tube 5 is inserted into the watertight joint J to form a stainless steel band. Since it is only necessary to fix to the cylindrical rubber member 3 at 6, the construction is simple and skill is not required.

〔え〕水密ジョイントＪは、ハンドホール２の削穴２１の径に対応する円筒ゴム部材３および円筒スペーサー４を選択することにより、削穴２１の径の大小を問わず、適用することができる。 [E] The watertight joint J can be applied regardless of the diameter of the hole 21 by selecting the cylindrical rubber member 3 and the cylindrical spacer 4 corresponding to the diameter of the hole 21 of the hand hole 2. .

〔お〕円筒ゴム部材３は、径大部３３と径小部３１との間に、内外径が連続的に小さくなっていく漸減径部３４を有する。この漸減径部３４の存在により、円筒スペーサー４が効果的に機能して径大部３３を拡径させ、ステンレスバンド６が径小部３１を効率良く締め付けるので、円筒ゴム部材３の径大部３３とハンドホール２との間、およびケーブル保護管５と円筒ゴム部材３の径小部３１との間で高い水密性が確保できる。 [O] The cylindrical rubber member 3 has a gradually decreasing diameter portion 34 between the large diameter portion 33 and the small diameter portion 31 in which the inner and outer diameters continuously decrease. Due to the existence of the gradually decreasing diameter portion 34, the cylindrical spacer 4 effectively functions to expand the large diameter portion 33 and the stainless steel band 6 efficiently tightens the small diameter portion 31. Therefore, the large diameter portion of the cylindrical rubber member 3 can be obtained. High watertightness can be ensured between 33 and the hand hole 2 and between the cable protection tube 5 and the small diameter portion 31 of the cylindrical rubber member 3.

〔か〕円筒スペーサー４のテーパ状部４１は、外径が連続的に小さくなっていくテーパ面４０を有するので、円筒ゴム部材３内へ円筒スペーサー４を打ち込む際に、テーパ面４０が径大部３３の内面を円滑に滑って嵌め込めるので、ハンマーｈで容易に打ち込むことができる。 [Ka] Since the tapered portion 41 of the cylindrical spacer 4 has a tapered surface 40 whose outer diameter continuously decreases, the tapered surface 40 has a large diameter when the cylindrical spacer 4 is driven into the cylindrical rubber member 3. Since the inner surface of the portion 33 is smoothly slid and fitted, it can be easily driven with the hammer h.

本発明は、上記実施例以外に、つぎの実施態様を含む。
ａ．ケーブル保護管５の替りに、差口をワンタッチで接続するための受口７（樹脂製）を水密ジョイントＪに装着しても良い（図４参照）。 The present invention includes the following embodiments in addition to the above embodiments.
a. Instead of the cable protection tube 5, a receiving port 7 (made of resin) for connecting the outlet with one touch may be attached to the watertight joint J (see FIG. 4).

ｂ．図５、図６に示す様に、テーパ状部４１の内径を円筒状部４３の内径より大きくした円筒スペーサー４を採用しても良い（請求項５に相当）。
図６の（ａ）、（ｂ）に示す様に、先端がホール２０内に臨む様に、円筒ゴム部材３および円筒スペーサー４内にケーブル保護管５を挿入する際に、テーパ状部４１の内壁にケーブル保護管５が引っ掛かり難い。このため、円筒ゴム部材３および円筒スペーサー４内に、ケーブル保護管５を容易に挿入することができる。 b. As shown in FIGS. 5 and 6, a cylindrical spacer 4 in which the inner diameter of the tapered portion 41 is larger than the inner diameter of the cylindrical portion 43 may be adopted (corresponding to claim 5).
As shown in FIGS. 6A and 6B, when the cable protection tube 5 is inserted into the cylindrical rubber member 3 and the cylindrical spacer 4 so that the tip faces the hole 20, The cable protection tube 5 is not easily caught on the inner wall. For this reason, the cable protection tube 5 can be easily inserted into the cylindrical rubber member 3 and the cylindrical spacer 4.

ｃ．締付具は、ステンレスバンド以外に、番線、針金、ビニル紐、または、ワイヤを用いたものであっても良い。 c. The fastener may be a wire, a wire, a vinyl string, or a wire other than the stainless steel band.

ｄ．ハンドホール２内から円筒ゴム部材３を削穴２１へ嵌め込む前に、径大部３３の外周に、必らずしもブチルゴム１を周設しておく必要はないが、高い水密性を確保するためには周設する方が好ましい。 d. Before fitting the cylindrical rubber member 3 into the drilling hole 21 from the hand hole 2, it is not always necessary to place the butyl rubber 1 on the outer periphery of the large diameter portion 33, but high water tightness is ensured. In order to do so, it is preferable to provide a circumference.

水密ジョイントを用いた、ハンドホールとケーブル保護管との連結構造の断面図である。It is sectional drawing of the connection structure of a handhole and a cable protective tube using a watertight joint. （ａ）は削穴へ円筒ゴム部材をホール内から嵌め込むところを示す説明図、（ｂ）はホール内から、ハンマーにより円筒ゴム部材内に円筒スペーサーを打ち込むところを示す説明図である。(A) is explanatory drawing which shows the place which inserts a cylindrical rubber member from the inside of a hole into a drilling hole, (b) is explanatory drawing which shows the place which drives a cylindrical spacer in a cylindrical rubber member with a hammer from the inside of a hole. （ａ）は水密ジョイント内へケーブル保護管を嵌め込むところを示す説明図、（ｂ）はケーブル保護管を嵌め込んだところを示す説明図である。(A) is explanatory drawing which shows the place which fits a cable protective tube in a watertight joint, (b) is explanatory drawing which shows the place which fitted the cable protective tube. ケーブル保護管の替りに、差口をワンタッチで接続するための受口を水密ジョイントに装着した、ハンドホールとケーブル保護管との連結構造の断面図である。It is sectional drawing of the connection structure of a handhole and a cable protection pipe which attached to the watertight joint the receptacle for connecting an opening by one touch instead of a cable protection pipe. （ａ）は削穴へ円筒ゴム部材をホール内から嵌め込むところを示す説明図、（ｂ）円筒ゴム部材内に、変形例に係る円筒スペーサーをホール内からハンマーで打ち込むところを示す説明図である。(A) is explanatory drawing which shows the place which inserts a cylindrical rubber member from the inside of a hole into a drilling hole, (b) It is explanatory drawing which shows the place where the cylindrical spacer which concerns on a modification is driven into a cylindrical rubber member from the inside with a hammer. is there. （ａ）は変形例に係る水密ジョイント内へケーブル保護管を嵌め込むところを示す説明図、（ｂ）はケーブル保護管を嵌め込んだところを示す説明図である。(A) is explanatory drawing which shows the place which fits a cable protection tube in the watertight joint which concerns on a modification, (b) is explanatory drawing which shows the place which fitted the cable protection tube.

符号の説明Explanation of symbols

１ ブチルゴム（板状ゴム）
２ ハンドホール（構造物）
３ 円筒ゴム部材（筒状弾性部材）
４ 円筒スペーサー（筒状スペーサー）
５ ケーブル保護管（地中埋設管）
６ ステンレスバンド（締付具）
７ 受口（ケーブル保護管、地中埋設管）
２０ ホール（構造物内）
２１ 削穴（取付穴）
３１ 径小部
３２ 鍔部
３３ 径大部
３４ 漸減径部
４０ テーパ面
４１ テーパ状部
４２ 鍔状部
４３ 円筒状部（筒状部）
Ａ ハンドホールとケーブル保護管との連結構造
Ｊ 水密ジョイント
ｗ 側壁 1 Butyl rubber (plate rubber)
2 Handhole (structure)
3 Cylindrical rubber member (cylindrical elastic member)
4 Cylindrical spacer (cylindrical spacer)
5 Cable protection pipe (underground pipe)
6 Stainless steel band (clamp)
7 Receptacle (cable protection pipe, underground pipe)
20 holes (inside the structure)
21 Drilling holes (mounting holes)
31 Small-diameter portion 32 Ridge portion 33 Large-diameter portion 34 Gradually decreasing-diameter portion 40 Tapered surface 41 Taper-shaped portion 42 Gutter-shaped portion 43 Cylindrical portion (tubular portion)
A Connection structure between hand hole and cable protection tube J Watertight joint w Side wall

Claims (6)

コンクリート製の構造物の側壁に設けた取付穴へ地中埋設管を水密的に連結するための水密ジョイントであって、
先端の径小部、基端の鍔部、および中間の径大部を有し、径大部外面が取付穴壁に密着し、前記鍔部が内側穴角に係止される様に構造物内から嵌め込まれる筒状弾性部材と、
先端のテーパ状部、基端の鍔状部、および外径が前記径大部の内径より若干大きい中間の筒状部を有し、該筒状部が径大部内に圧入され、前記鍔状部が前記鍔部に係止される様に、前記構造物内から筒状弾性部材内に打ち込まれる硬質の筒状スペーサーとを備え、
先端が前記構造物内に臨む様に前記筒状弾性部材および筒状スペーサー内に前記地中埋設管を挿入し、前記筒状弾性部材の径小部外周に配した締付具により前記地中埋設管を前記筒状弾性部材に固定することを特徴とする水密ジョイント。 A watertight joint for watertightly connecting a buried underground pipe to a mounting hole provided in a side wall of a concrete structure,
A structure having a small diameter portion at the tip, a flange portion at the base end, and a large diameter portion in the middle, the outer surface of the large diameter portion is in close contact with the mounting hole wall, and the flange portion is locked to the inner hole angle. A cylindrical elastic member fitted from the inside;
A tapered portion at the distal end, a flange portion at the proximal end, and an intermediate tubular portion whose outer diameter is slightly larger than the inner diameter of the large-diameter portion, and the tubular portion is press-fitted into the large-diameter portion; A hard cylindrical spacer that is driven into the cylindrical elastic member from within the structure so that the portion is locked to the flange,
The underground tube is inserted into the cylindrical elastic member and the cylindrical spacer so that the front end faces the structure, and the underground is inserted by a fastening tool disposed on the outer periphery of the small-diameter portion of the cylindrical elastic member. A watertight joint, wherein an embedded pipe is fixed to the cylindrical elastic member. ハンドホールの側壁に設けた円形の取付穴へ断面円形のケーブル保護管を水密的に連結するための水密ジョイントであって、
先端の径小部、基端の鍔部、および中間の径大部を有し、径大部外面が取付穴壁に密着し、前記鍔部が内側穴角に係止される様にハンドホール内から嵌め込まれる円筒ゴム部材と、
先端のテーパ状部、基端の鍔状部、および外径が前記径大部の内径より若干大きい中間の円筒状部を有し、該円筒状部が径大部内に圧入され、前記鍔状部が前記鍔部に係止される様に、前記ハンドホール内から円筒ゴム部材内に打ち込まれる樹脂製の円筒スペーサーとを備え、
先端が前記ハンドホール内に臨む様に前記円筒ゴム部材および円筒スペーサー内に前記ケーブル保護管を挿入し、前記円筒ゴム部材の径小部外周に配した締付具により前記ケーブル保護管を前記円筒ゴム部材に固定することを特徴とする水密ジョイント。 A watertight joint for watertightly connecting a cable protection tube having a circular cross section to a circular mounting hole provided on the side wall of the handhole,
A hand hole with a small diameter at the tip, a flange at the base end, and a large diameter at the middle, with the outer surface of the large diameter in close contact with the mounting hole wall and the hook being locked to the inner hole corner. A cylindrical rubber member fitted from inside,
A tapered portion at the distal end, a flange portion at the proximal end, and an intermediate cylindrical portion whose outer diameter is slightly larger than the inner diameter of the large-diameter portion, and the cylindrical portion is press-fitted into the large-diameter portion; A resin-made cylindrical spacer that is driven into the cylindrical rubber member from the hand hole so that the portion is locked to the collar portion,
The cable protection tube is inserted into the cylindrical rubber member and the cylindrical spacer so that the tip faces the hand hole, and the cable protection tube is connected to the cylinder by a fastening tool disposed on the outer periphery of the small diameter portion of the cylindrical rubber member. A watertight joint that is fixed to a rubber member. 前記ハンドホール内から前記円筒ゴム部材を前記取付穴へ嵌め込む前に、前記筒状弾性部材の径大部外面に板状ゴムを周設しておくことを特徴とする請求項２または請求項３に記載の水密ジョイント。   3. A plate-like rubber is provided around the outer surface of the large-diameter portion of the cylindrical elastic member before the cylindrical rubber member is fitted into the mounting hole from within the hand hole. 3. The watertight joint according to 3. 前記円筒ゴム部材は、前記径大部と前記径小部との間に、内外径が連続的に小さくなっていく漸減径部を有し、
前記円筒スペーサーの前記テーパ状部は、外径が連続的に小さくなっていくテーパ面を有することを特徴とする請求項２または請求項３に記載の水密ジョイント。 The cylindrical rubber member has a gradually decreasing diameter portion whose inner and outer diameters are continuously reduced between the large diameter portion and the small diameter portion,
4. The watertight joint according to claim 2, wherein the tapered portion of the cylindrical spacer has a tapered surface whose outer diameter is continuously reduced. 5. 前記円筒スペーサーの前記テーパ状部の内径を、前記円筒状部の内径より大きくしたことを特徴とする請求項４に記載の水密ジョイント。   The watertight joint according to claim 4, wherein an inner diameter of the tapered portion of the cylindrical spacer is larger than an inner diameter of the cylindrical portion. 前記ケーブル保護管は、管壁に、凸状に盛り上がる凸部と、窪んだ凹部とが、管軸心方向に対して交互に位置する螺旋状に形成されており、
前記円筒ゴム部材の前記径小部に臨む、前記ケーブル保護管の前記凹部にはゴムパッキンが嵌め込まれており、
前記円筒ゴム部材の径小部外周には締付具が装着されていることを特徴とする請求項１乃至請求項５の何れかに記載の水密ジョイント。
The cable protection tube is formed on the tube wall in a spiral shape with convex portions that bulge in a convex shape and recessed concave portions that are alternately positioned with respect to the tube axis direction.
A rubber packing is fitted into the concave portion of the cable protection tube facing the small diameter portion of the cylindrical rubber member,
The watertight joint according to any one of claims 1 to 5, wherein a fastener is attached to an outer periphery of the small diameter portion of the cylindrical rubber member.
JP2006136276A 2006-05-16 2006-05-16 Watertight joint Expired - Fee Related JP4833730B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010189980A (en) * 2009-02-20 2010-09-02 Sanritsu:Kk Connecting structure of manhole and sewage main pipe, and connecting method of manhole and sewage main pipe

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08277538A (en) * 1995-04-06 1996-10-22 Norio Otsuga Connecting joint for lateral sewer
JPH09329277A (en) * 1996-06-11 1997-12-22 Hayakawa Rubber Co Ltd Water cutoff flexible coupling and mounting method therefor
JP2001177964A (en) * 1999-12-14 2001-06-29 Toban Shoji Kk Device for joining buried pipe to connection, and junction structure using this
JP2001197646A (en) * 2000-01-07 2001-07-19 Aron Kasei Co Ltd Method for fitting joint to handhole
JP2002118918A (en) * 2000-10-10 2002-04-19 Kita Kanto Kogyo:Kk Method for connecting flexible tube to underground box, and connecting material and wedge material for use in the connecting method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08277538A (en) * 1995-04-06 1996-10-22 Norio Otsuga Connecting joint for lateral sewer
JPH09329277A (en) * 1996-06-11 1997-12-22 Hayakawa Rubber Co Ltd Water cutoff flexible coupling and mounting method therefor
JP2001177964A (en) * 1999-12-14 2001-06-29 Toban Shoji Kk Device for joining buried pipe to connection, and junction structure using this
JP2001197646A (en) * 2000-01-07 2001-07-19 Aron Kasei Co Ltd Method for fitting joint to handhole
JP2002118918A (en) * 2000-10-10 2002-04-19 Kita Kanto Kogyo:Kk Method for connecting flexible tube to underground box, and connecting material and wedge material for use in the connecting method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010189980A (en) * 2009-02-20 2010-09-02 Sanritsu:Kk Connecting structure of manhole and sewage main pipe, and connecting method of manhole and sewage main pipe

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