JP2572021Y2 - Water stopcock at the end of the cable protection tube containing the cable - Google Patents
Water stopcock at the end of the cable protection tube containing the cableInfo
- Publication number
- JP2572021Y2 JP2572021Y2 JP1990096446U JP9644690U JP2572021Y2 JP 2572021 Y2 JP2572021 Y2 JP 2572021Y2 JP 1990096446 U JP1990096446 U JP 1990096446U JP 9644690 U JP9644690 U JP 9644690U JP 2572021 Y2 JP2572021 Y2 JP 2572021Y2
- Authority
- JP
- Japan
- Prior art keywords
- water
- cable
- swellable
- rubber composition
- protection tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Pipe Accessories (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Description
【考案の詳細な説明】 （産業上の利用分野） 本考案は、通信ケーブル、電力ケーブル等を収容する
保護管の人孔部などでのケーブルが収容されたケーブル
保護管端の止水栓に関し、さらに詳しくはケーブル長さ
方向および太さ方向の移動、伸縮、微動によってもケー
ブルを損傷させないよう止水でき、またケーブルの外径
が変わっても、容易に止水栓内径寸法を調整でき、容易
に接着可能なケーブル保護管端の止水栓に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to a water stopcock at an end of a cable protection tube in which a cable is housed in a human hole portion of a protection tube for housing a communication cable, a power cable, and the like. In more detail, the water can be stopped so as not to damage the cable even by movement, expansion and contraction, and slight movement in the cable length direction and thickness direction, and even if the outer diameter of the cable changes, the inner diameter of the water stopcock can be easily adjusted, The present invention relates to a water stopcock at the end of a cable protection tube that can be easily bonded.
（従来の技術） 従来、通信ケーブル、電力ケーブル等を収容する保護
管の人孔部などでの管端では、人孔部などへ浸入した水
がケーブル保護管内へ流入するのを防ぐため、またはケ
ーブル保護管に浸入した水が人孔部へ流入するのを防ぐ
ため止水が施されているが、従来は、この止水に第３図
に示すように、発泡剤を主体とした充填物８をケーブル
２とケーブル保護管の端部１との間に充填する方法、ま
たは第４図に示すように、ケーブル２の外周に巻き付け
たゴム組成体９からなる筒状体を、この筒状体に内挿さ
れたねじ式の緊締具（例えば締め付け用ボルト11および
受金物10）を締め付けることにより、ゴム筒状体をケー
ブル保護管の端部１の内周面およびケーブル２の外周面
に密着させる方法または第５図に示すように、埋設管12
に、ケーブル２との間に内空部14を有する筒状体の高吸
水ゴム部材13を装着し、高吸水ゴム部材13が膨張するこ
とにより止水する方法が用いられていた。(Prior Art) Conventionally, at a pipe end of a protective tube for accommodating a communication cable, a power cable, or the like, at a pipe end thereof, in order to prevent water that has entered the human hole or the like from flowing into the cable protective tube, or Water stoppage is applied to prevent the water that has entered the cable protection tube from flowing into the human hole. Conventionally, however, this water stoppage is filled with a foaming agent mainly as shown in FIG. 8 is filled between the cable 2 and the end 1 of the cable protection tube, or as shown in FIG. 4, a cylindrical body made of a rubber composition 9 wound around the outer periphery of the cable 2 By tightening a screw-type fastener (for example, a tightening bolt 11 and a receiving object 10) inserted in the body, the rubber cylindrical body is attached to the inner peripheral surface of the end 1 of the cable protection tube and the outer peripheral surface of the cable 2. As shown in FIG.
In addition, a method has been used in which a highly water-absorbing rubber member 13 of a cylindrical shape having an inner space portion 14 is attached to the cable 2 and the high-water-absorbing rubber member 13 expands to stop water.
従来の発泡剤を主体とした充填物を用いる止水方法で
は、温度変化や車両振動によるケーブルの移動に伴い、
ケーブル２と充填物８の間の付着がゆるみ、止水性が低
下するほか、作業の熟練度により、止水性にばらつきが
生ずる問題があった。In the conventional water-stopping method using a foaming agent-based filling, the cable moves due to temperature changes and vehicle vibration,
There is a problem that the adhesion between the cable 2 and the filler 8 is loosened, the water stopping performance is reduced, and the water stopping performance varies depending on the skill of the operation.
また、組成体９からなる環状体をねじで締め付ける止
水方法では、静止状態においても、ケーブル２にゴム組
成体からなる環状体を取り付けるための環状体の切断部
から漏水が生じるうえ、温度変化や車両振動によるケー
ブル２の移動により、漏水が増加する欠点があった。Further, in the water stopping method in which the annular body made of the composition 9 is tightened with a screw, even in a stationary state, water leaks from a cut portion of the annular body for attaching the annular body made of the rubber composition to the cable 2 and a temperature change occurs. There is a drawback that water leakage increases due to movement of the cable 2 due to vibration of the vehicle.
また、高吸水ゴム部材13からなる筒状体は、ケーブル
２との間に内空部14を有するため高吸水ゴム部材13が流
水により膨潤し、ケーブル２に密着するまでは止水性が
ない欠点があった。Further, since the cylindrical body made of the high water-absorbing rubber member 13 has the inner space 14 between the cable 2 and the cable 2, the high water-absorbing rubber member 13 swells due to flowing water and does not have water stoppage until it comes into close contact with the cable 2. was there.
（考案が解決しようとする課題） しかるに、発泡剤を主体とした充填物を用いる止水方
法では、経年に連れて充填物が固化、凝縮して弛緩する
とともに、ケーブルに加わる微振動により、それらがさ
らに助長され、長期間にわたって安定な止水の完璧を期
し得ない欠点を有している。(Problems to be solved by the invention) However, in the water stoppage method using a filler mainly composed of a foaming agent, the filler solidifies, condenses, and relaxes with the passage of time, and the fine vibration applied to the cable causes However, it has the disadvantage that it is not possible to ensure perfect water stoppage over a long period of time.
さらに、ねじ式の緊結により筒体のゴム組成体９を密
着させ止水する方法は、装着時のゴム圧を均一に作用さ
せられないことや、筒体のゴム組成物９の締め付けにア
ンバランスが生じ、安定な止水ができないこと、またケ
ーブルに加わる微振動に対しては、粘性のある潤滑剤を
個々のケーブルおよび止水栓に塗布する等の煩雑な作業
を必要とし、さらに、長期間にわたって潤滑剤が逸散
し、本来の潤滑効果を発現しなくなる等、作業上複雑な
施工手順で作業がやりずらく、出来上がりの品質のばら
つきが大きく、不安定な性能であるなどの問題があり、
価格的にも高価である欠点を有している。Furthermore, the method of stopping the water by tightly contacting the rubber composition 9 of the cylindrical body by screw-type fastening is that the rubber pressure at the time of mounting cannot be applied uniformly, and the tightening of the rubber composition 9 of the cylindrical body is unbalanced. If water is not stably shut off and micro vibrations applied to the cable, complicated work such as applying viscous lubricant to individual cables and water stopcocks is required. Lubricants dissipate over a period of time, and the original lubrication effect is not exhibited. Yes,
It has the disadvantage of being expensive in price.
さらに、高吸水ゴム部材13と、ケーブル２を密着させ
る場合には、高吸水ゴム部材13が膨潤し、内空部14を閉
塞させるまでに時間を要するので、高吸水ゴム部材13と
ケーブル２が密着するまで漏水する欠点を有している。Further, when the high water-absorbing rubber member 13 and the cable 2 are brought into close contact with each other, it takes time until the high-water-absorbing rubber member 13 swells and closes the inner space portion 14. It has the disadvantage of leaking water until it comes into close contact.
このようなことから、本考案は、流水と接触すると同
時に止水性を発現し、様々な外径を有するケーブル２に
対し厚み方向に層分割可能な水膨潤性繊維組成物マット
５をケーブル２の外径に合わせ層分割し、調整すること
により、１種類の止水栓で、ある範囲のケーブル外径に
対応が可能となることから、止水栓の種類を最小とし、
温度変化や車両振動によるケーブルの移動に対する止水
能力を改善するとともに、ケーブルに対する過度の拘束
を防ぎ、ケーブル保護管端に簡単、かつ短時間に装着で
き、作業性に優れ装着と同時に止水性を発現し、長期間
安定した止水能力を持つ、安価なケーブルが収容された
ケーブル保護管端の止水栓を提供することにある。For this reason, the present invention provides a water-swellable fiber composition mat 5 that exhibits waterproofness at the same time as coming into contact with running water and that can be layer-divided in the thickness direction with respect to cables 2 having various outer diameters. By dividing the layer according to the outer diameter and adjusting it, it is possible to respond to a certain range of cable outer diameter with one type of water stopcock, so minimize the type of water stopcock,
Improves the water stopping performance against cable movement due to temperature changes and vehicle vibration, prevents excessive restraint on the cable, and can be easily and quickly attached to the end of the cable protection tube. An object of the present invention is to provide a water stopcock at the end of a cable protection tube in which an inexpensive cable is housed and has a water stoppage capability that is stable and has a long term stable water stoppage ability.
（課題を解決するための手段） 本考案のケーブルが収容されたケーブル保護管端の止
水栓は、厚み方向に層分割可能な水膨潤性繊維組成物マ
ット５が、高水膨潤性ゴム組成物３と低水膨潤性ゴム組
成物４で形成された筒状体の内周全体および外周面の外
嵌する箇所に配置されており、 該厚み方向に層分割可能な水膨潤性繊維組成物マット
は、水膨潤性繊維95〜10重量部と非膨潤性繊維５〜90重
量部の混合物の不織シートを複数層積層したものであ
り、 該高水膨潤性ゴム組成物は、天然ゴムまたは合成ゴム
組成物100重量部と吸水性樹脂粉末30〜250重量部の混合
物を加硫したものであり、 該低水膨潤性ゴム組成物は、天然ゴムまたは合成ゴム
組成物100重量部と吸水性樹脂粉末０〜30重量部の混合
物を加硫したものであり、かつ該筒状体の半径方向に、
半割状の裁断部を持つ。(Means for Solving the Problems) The water stopcock at the end of the cable protection tube accommodating the cable of the present invention is a water-swellable fiber composition mat 5 which can be divided into layers in the thickness direction. Water swellable fiber composition which is arranged on the entire inner periphery and the outer fitting surface of a cylindrical body formed of the product 3 and the low water swellable rubber composition 4 and which can be divided into layers in the thickness direction. The mat is obtained by laminating a plurality of nonwoven sheets of a mixture of 95 to 10 parts by weight of water-swellable fibers and 5 to 90 parts by weight of non-swellable fibers, and the high water-swellable rubber composition is made of natural rubber or A mixture of 100 parts by weight of a synthetic rubber composition and 30 to 250 parts by weight of a water-absorbent resin powder is vulcanized, and the low water-swellable rubber composition is 100 parts by weight of a natural rubber or a synthetic rubber composition and a water-absorbent. Vulcanized mixture of 0 to 30 parts by weight of resin powder, and radial direction of the cylindrical body ,
It has a half-cut part.
本考案のケーブルが収容されたケーブル保護管端の水
膨潤性繊維組成物マットに使用できる水膨潤性繊維は、
蒸留水に浸漬した時、瞬時に自重の５倍以上吸水でき、
かつ水に溶解しないものであればすべて使用でき、例え
ば、カルボキシメチルエーテルのナトリウム塩化された
キュプラアンモニウムレーヨンフィラメントの短繊維、
アクリロニトリル（共）重合体からなるアクリル系合成
繊維の加水分解物（特開昭57−82567号、特開昭55−989
1号）、アクリロニトリル−アクリル酸共重合体からな
るアクリル系水膨潤性繊維（特開昭61−239034号）、ア
クリロニトリルとリチウム、カリウム、ナトリウムおよ
びアンモニウムの中から選ばれた少なくとも１種の物質
のカルボン酸塩との共重合体からなるアクリル系水膨潤
性繊維（特開昭62−188109号、旭化成工業社製KKF）、
スルホン酸基、またはその塩含有不飽和単量体とアクリ
ロニトリル共重合体からなるアクリル系水膨潤性繊維
（特開昭64−14313号）、イソブチレン−無水マレイン
酸塩系水膨潤性繊維（アメリカ国アーコケミカル社製フ
ァイバソーブ）、イソブチレン−無水マレイン酸塩共重
合体にエチレンオキシド・プロピレンオキシド・ブロッ
ク共重合体を混合した水膨潤性繊維（特開昭62−4743
号）などがある。前記水膨潤性繊維と混合される非膨潤
性繊維は、蒸留水に浸漬してもほとんど吸水しないもの
であり、例えばポリエチレン、ポリプロピレン、ポリエ
ステル、ナイロン、アクリル繊維などがある。The water-swellable fibers that can be used for the water-swellable fiber composition mat at the end of the cable protection tube containing the cable of the present invention are:
When immersed in distilled water, it can instantly absorb more than 5 times its own weight,
Any material that does not dissolve in water can be used, for example, short fibers of sodium chlorinated cupra ammonium rayon filament of carboxymethyl ether,
Hydrolyzate of acrylic synthetic fiber composed of acrylonitrile (co) polymer (JP-A-57-82567, JP-A-55-989)
No. 1), an acrylic water-swellable fiber comprising an acrylonitrile-acrylic acid copolymer (JP-A-61-239034), and acrylonitrile and at least one substance selected from lithium, potassium, sodium and ammonium. Acrylic water-swellable fibers composed of a copolymer with a carboxylate (JP-A-62-188109, KKF manufactured by Asahi Kasei Corporation)
Acrylic water-swellable fiber composed of an acrylonitrile copolymer and an unsaturated monomer containing a sulfonic acid group or a salt thereof (JP-A-64-14313), isobutylene-maleic anhydride-based water-swellable fiber (US A water-swellable fiber obtained by mixing an ethylene oxide / propylene oxide / block copolymer with an isobutylene / maleic anhydride copolymer (Fibersorb manufactured by Arco Chemical Co., Ltd.) (Japanese Patent Laid-Open No. Sho 62-4743).
No.). The non-swellable fiber mixed with the water-swellable fiber hardly absorbs water even when immersed in distilled water, and examples thereof include polyethylene, polypropylene, polyester, nylon, and acrylic fiber.
本考案の止水栓に使用する水膨潤性繊維組成物マット
は、水膨潤性繊維95〜10重量部と非膨潤性繊維５〜90重
量部からなる。水膨潤性繊維が95重量部以上であると、
水膨潤性繊維組成物マットが水膨潤、乾燥のサイクルを
繰り返されるとゲル状となり、最終的に止水能力を失っ
てしまうし、材料上高価につくからであり、一方、水膨
潤性繊維が10重量部以下であると、マットの初期止水能
力が不十分であり、ケーブルが収容されたケーブル保護
管端に止水栓を装着しても止水できないからである。水
膨潤性繊維と非膨潤性繊維の混合物は、繊維業界で公知
の方法により、例えば1mm厚の不織シートに形成され、
不織シートは複数層重積して、例えば軽くニードルパン
チングを施して積層することにより、層分割可能なマッ
トに形成できる。層分割可能な水膨潤性繊維組成物マッ
トは、高水膨潤性ゴム組成物と低水膨潤性ゴム組成物で
形成された筒状体の内周面および外周面に配置され、数
層からなるマットの１層以上を単に手ではぎ取ることに
より、容易にケーブルの外径に止水栓の内径を合わすこ
とができる。The water-swellable fiber composition mat used for the water stopcock of the present invention comprises 95 to 10 parts by weight of water-swellable fibers and 5 to 90 parts by weight of non-swellable fibers. When the water-swellable fiber is 95 parts by weight or more,
This is because the water-swellable fiber composition mat becomes gel-like when the cycle of water-swelling and drying is repeated, and eventually loses the water-stopping ability and is expensive on the material. If the amount is less than 10 parts by weight, the initial water stopping ability of the mat is insufficient, and the water cannot be stopped even if a water stopcock is attached to the end of the cable protection tube in which the cable is stored. The mixture of water-swellable fibers and non-swellable fibers is formed into a non-woven sheet having a thickness of, for example, 1 mm by a method known in the textile industry,
The nonwoven sheet can be formed into a mat that can be divided into layers by laminating a plurality of layers and, for example, lightly performing needle punching and laminating. The water-swellable fiber composition mat that can be divided into layers is arranged on the inner and outer peripheral surfaces of a cylindrical body formed of the high-water-swellable rubber composition and the low-water-swellable rubber composition, and includes several layers. By simply tearing off one or more layers of the mat by hand, the inner diameter of the water stopcock can easily be matched to the outer diameter of the cable.
本考案のケーブルが収容されたケーブル保護管端の止
水栓に使用できる高水膨潤性ゴム組成物は、天然ゴムま
たは合成ゴム組成物100重量部と吸水性樹脂粉末30〜250
重量部の混合物を加硫したものである。天然ゴムまたは
合成ゴム組成物は、天然ゴムまたはブタジエンゴム、ス
チレン−ブタジエンゴム、クロロプレンゴム、ニトリル
ゴム、ブチルゴム、エチレン−プロピレンゴム、クロル
スルホン化ポリエチレンゴム、アクリルゴム、エピクロ
ルヒドリンゴム、ウレタンゴム、水素化ニトリルゴム、
塩素化ポリエチレンなどの合成ゴムにゴム業界で公知の
軟化剤、充填剤、加硫剤、加硫促進剤、加工助剤、老化
防止剤などを添加したものである。天然ゴムまたは合成
ゴム組成物に混合される吸水性樹脂粉末は、蒸留水に浸
漬した時、自重の数10倍以上吸水でき、水に溶解しない
ものであり、例えばデンプン−アクリロニトリルグラフ
ト重合体加水分解物、デンプン−アクリル酸グラフト重
合体、カルボキシメチルセルロース架橋体、アクリル酸
塩系架橋体、アクリル酸塩−アクリルアミド共重合体、
酢酸ビニル−アクリル酸塩共重合体ケン化物、イソブチ
レン−無水マレイン酸共重合体、酢酸ビニル−無水マレ
イン酸共重合体ケン化物、エチレンオキサイド系重合体
架橋物などがある。高水膨潤性ゴム組成物は、前記の天
然ゴムまたは合成ゴム組成物100重量部と吸水性樹脂粉
末30〜250重量部からなる。吸水性樹脂粉末が30重量部
未満であると、高水膨潤性ゴム組成物は水と接触しても
吸水能力が不十分で、ほとんど膨潤しないからであり、
250重量部以上であると高水膨潤性ゴム組成物が水と接
触すると膨潤しすぎて、ケーブルに過度の圧力を加えて
ケーブルに悪影響を及ぼすとともに、膨潤した高水膨潤
性ゴム組成物の強度が弱まり、止水栓撤去時に止水栓の
形状を保持したまま撤去できず、撤去に多大の時間を要
し作業性が著しく低下するからである。The high water swellable rubber composition that can be used for the water stopcock at the end of the cable protection tube containing the cable of the present invention is composed of 100 parts by weight of a natural rubber or a synthetic rubber composition and 30 to 250 parts of a water absorbent resin powder.
It is a vulcanized mixture of parts by weight. Natural rubber or synthetic rubber compositions include natural rubber or butadiene rubber, styrene-butadiene rubber, chloroprene rubber, nitrile rubber, butyl rubber, ethylene-propylene rubber, chlorosulfonated polyethylene rubber, acrylic rubber, epichlorohydrin rubber, urethane rubber, hydrogenated Nitrile rubber,
A synthetic rubber such as chlorinated polyethylene is obtained by adding a softener, a filler, a vulcanizing agent, a vulcanization accelerator, a processing aid, an antioxidant, etc., which are well known in the rubber industry. The water-absorbent resin powder mixed with the natural rubber or the synthetic rubber composition, when immersed in distilled water, can absorb tens of times its own weight or more and does not dissolve in water.For example, starch-acrylonitrile graft polymer hydrolysis Product, starch-acrylic acid graft polymer, carboxymethylcellulose crosslinked product, acrylate-based crosslinked product, acrylate-acrylamide copolymer,
There are saponified vinyl acetate-acrylate copolymer, isobutylene-maleic anhydride copolymer, saponified vinyl acetate-maleic anhydride copolymer, cross-linked ethylene oxide polymer, and the like. The high water swellable rubber composition comprises 100 parts by weight of the natural rubber or synthetic rubber composition and 30 to 250 parts by weight of a water-absorbent resin powder. If the water-absorbent resin powder is less than 30 parts by weight, the high water-swellable rubber composition has insufficient water-absorbing ability even when contacted with water, because it hardly swells,
When the amount is 250 parts by weight or more, the high water swellable rubber composition swells too much when it comes into contact with water, exerts excessive pressure on the cable and adversely affects the cable, and the strength of the swollen high water swellable rubber composition. This makes it impossible to remove the water stopcock while maintaining its shape when removing the water stopcock, which requires a great deal of time to remove and greatly reduces the workability.
本考案のケーブルが収容されたケーブル保護管端の止
水栓に使用できる低水膨潤性ゴム組成物は、天然ゴムま
たは合成ゴム組成物100重量部と吸水性樹脂粉末０〜35
重量部の混合物を加硫したものである。天然ゴムまたは
合成ゴム組成物および吸水性樹脂粉末は、前記の高水膨
潤性ゴム組成物について説明したものと同じ組成である
が、天然ゴムまたは合成ゴム組成物100重量部に対して
吸水性樹脂粉末を０〜30重量部と限定したのは、30重量
部以上だと低水膨潤性ゴム組成物のつば状の部分が人孔
部からの流水により膨潤し、止水栓が若干人孔部側へ移
動するとともに、膨潤することにより強度が失われるの
で、治具を差し込むなどの容易な方法により、止水栓を
撤去しにくくなるからである。この意味ではできるだけ
吸水性樹脂粉末を添加しない方が望ましい。しかしなが
ら、吸水性樹脂粉末が30重量部以下の範囲で添加される
と、低水膨潤性ゴム組成物は一定の強度を有したまま膨
潤し、水膨潤性繊維組成物マットに圧力が加わり、より
高い止水栓性能を発現する。The low water swellable rubber composition that can be used for the water stopcock at the end of the cable protection tube in which the cable of the present invention is housed is composed of 100 parts by weight of a natural rubber or a synthetic rubber composition and water absorbent resin powders 0 to 35.
It is a vulcanized mixture of parts by weight. The natural rubber or synthetic rubber composition and the water-absorbent resin powder have the same composition as that described for the high water swellable rubber composition, but the water-absorbent resin is based on 100 parts by weight of the natural rubber or synthetic rubber composition. The reason for limiting the powder to 0 to 30 parts by weight is that if it is 30 parts by weight or more, the brim-like portion of the low water swellable rubber composition swells due to flowing water from the human hole, and the water stopcock is slightly This is because the swelling causes the strength to be lost while moving to the side, and it is difficult to remove the water stopcock by an easy method such as inserting a jig. In this sense, it is desirable not to add the water-absorbing resin powder as much as possible. However, when the water-absorbent resin powder is added in a range of 30 parts by weight or less, the low water swellable rubber composition swells while having a certain strength, and pressure is applied to the water swellable fiber composition mat, Develops high water stopcock performance.
以上、本考案の止水栓に使用できる諸材料について説
明した。In the foregoing, various materials that can be used for the water stopcock of the present invention have been described.
次に、本考案の止水栓の構造について説明する。 Next, the structure of the water stopcock of the present invention will be described.
本考案のケーブルが収容されたケーブル保護管端の止
水栓は、厚み方向に層分割可能な水膨潤性繊維組成物マ
ットが高水膨潤性ゴム組成物と低水膨潤性ゴム組成物で
形成された筒状体の内周面および外周面に配置されてお
り、かつ該筒状体の半径方向に、反割状の裁断部を持つ
ことを特徴とする。The water stopcock at the end of the cable protection tube in which the cable of the present invention is housed is made of a water-swellable fiber composition mat that can be divided into layers in the thickness direction, formed of a high water-swellable rubber composition and a low water-swellable rubber composition. It is arranged on the inner peripheral surface and the outer peripheral surface of the formed cylindrical body, and has a cut-away portion in the radial direction of the cylindrical body.
本考案の止水栓は、またケーブルの径および保護管の
径に適合するように、厚み方向に層分割可能な水膨潤性
繊維組成物マットが、場合により止水栓の内周面および
外周面から１枚以上手ではぎ取られ、止水栓の半割状裁
断部を手ないし治具を使用して広げてケーブルに環状に
取り付けた後、例えば木槌などを使用してケーブル保護
管端部に装着することにより、水膨潤性繊維組成物マッ
トをケーブル保護管の内周面およびケーブルの外周面に
密着させる。The water stopcock according to the present invention also comprises a water-swellable fiber composition mat which can be divided into layers in the thickness direction so as to be adapted to the diameter of the cable and the diameter of the protective tube. At least one piece is cut off from the surface by hand, and the half cut-off portion of the water stopcock is spread by hand or jig and attached to the cable in a ring shape. By attaching to the end, the water-swellable fiber composition mat is brought into close contact with the inner peripheral surface of the cable protection tube and the outer peripheral surface of the cable.
前記の状態において、人孔部および／またはケーブル
保護管内に水が溜まり、本考案の止水栓に水が接触する
と、まず水膨潤性繊維組成物マットが瞬時に吸水してゲ
ル状に膨潤して水の浸入を妨げる。その後、約５時間以
上を要して高水膨潤性ゴム組成物がケーブル保護管の内
部で膨潤してケーブル保護管端付近の保護管の径が大き
くなった箇所に充填固定され、ケーブル保護管内から人
孔部へ止水栓が抜け出すことを妨げる。一方、低水膨潤
性ゴム組成物は、人孔部から高い圧力の水が止水栓を経
てケーブル保護管内へ浸入するのを、水膨潤性繊維組成
物マットとともに妨げるとともに、止水栓がケーブル保
護管内に押し込まれるのを妨げる。これらの効果によ
り、本考案の止水栓は装着直後および長期的に水の浸入
を妨げる。In the above state, when water accumulates in the human hole and / or the cable protection tube and the water comes into contact with the water stopcock of the present invention, first, the water-swellable fiber composition mat instantaneously absorbs water and swells in a gel state. To prevent water intrusion. After that, it takes about 5 hours or more to fill and fix the high water swellable rubber composition at the portion where the diameter of the protective tube near the end of the cable protective tube has increased due to swelling inside the cable protective tube. To prevent the stopcock from slipping out of the hole into the human hole. On the other hand, the low water swellable rubber composition prevents water of high pressure from the human hole from entering into the cable protection tube through the water stopcock together with the water swellable fiber composition mat, and the water stopcock is used for the cable stop. Prevents being pushed into the protection tube. Due to these effects, the water stopcock of the present invention prevents water intrusion immediately after installation and for a long time.
また、本考案の止水栓によれば、ケーブルの外周面に
おいてはケーブルが水膨潤性繊維組成物マットを潤滑剤
としてゆるやかに接触しているので、温度変化や車両振
動によるケーブルの伸縮や移動が生じても、水の浸入を
妨げることができ、ケーブルに対し過度の拘束力も加わ
ることなく、また厚み方向に層分割可能な水膨潤性繊維
組成物マットを手で、場合により１層以上はぎ取ること
により、容易にケーブルの外径および保護管の内径に適
合させることができるので、さらに寸法上、わずかの種
類の止水栓のみで対応でき、水膨潤・乾燥のサイクルが
止水栓に付与されても止水効果が低下しないし、また従
来の止水栓と異なり、発泡剤の充填やねじの締め付けを
伴わないし、長期間にわたってほぼ止水栓の原型をとど
めているので、装着および撤去作業に熟練を要せず、か
つ止水性も安定している。In addition, according to the water stopcock of the present invention, since the cable is gently in contact with the water-swellable fiber composition mat as a lubricant on the outer peripheral surface of the cable, expansion and contraction or movement of the cable due to temperature change or vehicle vibration. Can prevent water infiltration, apply excessive restraining force to the cable, and remove one or more layers of the water-swellable fiber composition mat that can be divided into layers in the thickness direction by hand. As a result, it is possible to easily adapt to the outer diameter of the cable and the inner diameter of the protective tube, and furthermore, it is possible to use only a few types of water stopcocks in terms of dimensions, and the water swelling and drying cycle is given to the water stopcock The water stop effect does not decrease even if it is done, and unlike conventional water stopcocks, it does not involve filling with foaming agents or tightening screws, and it is almost the same as the water stopcock for a long time, so it is installed Without the need for skilled in the pre-removal work, and water cut is also stable.
（作用） 本考案のケーブルが収容されたケーブル保護管端の止
水栓の作用を、図面を参照して説明する。(Operation) The operation of the water stopcock at the end of the cable protection tube accommodating the cable of the present invention will be described with reference to the drawings.
第１図は、本考案の止水栓をケーブル保護管端に取り
付けた状態を示す断面図、第２図は、本考案の止水栓を
取り付けたケーブル保護管端に、水が浸入し止水栓の水
膨潤性繊維組成物マットと高水膨潤性ゴム組成物が膨潤
して止水効果を発現した状態を示す斜視図である。FIG. 1 is a cross-sectional view showing a state in which the water stopcock of the present invention is attached to the end of the cable protection tube, and FIG. 2 is a diagram in which water intrudes into the end of the cable protection tube to which the water stopcock of the present invention is attached. It is a perspective view showing the state where the water swellable fiber composition mat of the faucet and the high water swellable rubber composition swelled to exhibit the water stopping effect.
第１図、第２図において、１はケーブル保護管の端
部、２は保護管内に収容されたケーブル、３は高水膨潤
性ゴム組成物、３′は水で膨潤した高水膨潤性ゴム組成
物、４は低水膨潤性ゴム組成物、５は厚み方向に層分割
可能な水膨潤性繊維組成物マット、５′は水で膨潤した
水膨潤性繊維組成物マット、６は止水栓に設けた裁断部
である。1 and 2, 1 is an end of a cable protection tube, 2 is a cable housed in the protection tube, 3 is a highly water-swellable rubber composition, and 3 'is a water-swellable rubber swollen with water. The composition, 4 is a low water swellable rubber composition, 5 is a water swellable fiber composition mat that can be divided into layers in the thickness direction, 5 'is a water swellable fiber composition mat swelled with water, and 6 is a water stopcock. It is a cutting section provided in.
水膨潤性繊維組成物マット５は、例えばクロロプレン
系接着剤やゴム系両面粘着テープを介して高水膨潤性ゴ
ム組成物３および低水膨潤性ゴム組成物４に接着固定さ
れている。The water-swellable fiber composition mat 5 is adhered and fixed to the high-water-swellable rubber composition 3 and the low-water-swellable rubber composition 4 via, for example, a chloroprene-based adhesive or a rubber-based double-sided adhesive tape.
第１図において、水膨潤性繊維組成物マット５の一部
をケーブル径やケーブル保護管径に適合するよう層状に
はぎ取り、裁断部６を開き、また高水膨潤性ゴム組成物
３、低水膨潤性ゴム組成物４および水膨潤性繊維組成物
マット５の一部も開いて、止水栓をケーブル２に嵌合さ
せて取り付け、その後、ケーブル保護管１の端部に、木
槌などの治具を使用して装着する。In FIG. 1, a part of the water-swellable fiber composition mat 5 is peeled off in layers so as to conform to the cable diameter and the cable protection tube diameter, the cut portion 6 is opened, and the high water-swellable rubber composition 3 and low water A part of the swellable rubber composition 4 and the water-swellable fiber composition mat 5 are also opened, and a water stopcock is fitted and attached to the cable 2. Then, a mallet or the like is attached to the end of the cable protection tube 1. Attach using a jig.
第１図および第２図において、人孔部から水がケーブ
ル保護管内に浸入しようとすると、まず水膨潤性繊維組
成物マット５が瞬間的に水を吸水し、瞬時に水膨潤性繊
維組成物マット５′の状態に膨潤・ゲル化して水の浸入
を妨げる。その後、水が徐々に高水膨潤性ゴム組成物３
に吸水され、高水膨潤性ゴム組成物３′の状態に膨潤し
て、水膨潤性繊維組成物マット５′が、ケーブル保護管
内に密着すると同時に、ケーブル２の外周に密着し、さ
らにケーブル保護管１の外部に露出している低水膨潤性
ゴム組成物４のつばの部分が止水栓のケーブル保護管１
内への侵入を防止することにより、長期的に止水効果を
維持できる。また、水がケーブル保護管１内より人孔部
に流入しようとすると、まず水膨潤性繊維組成物マット
５が、瞬間的に水を吸水し、水膨潤性繊維組成物マット
５′の状態に膨潤・ゲル化して水の浸入を妨げる。その
後、水が徐々に高水膨潤性ゴム組成物３に吸水され、高
水膨潤性ゴム組成物３′の状態に膨潤して水膨潤性繊維
組成物マット５′がケーブル保護管内に密着すると同時
に、ケーブルの外周に密着し、さらにケーブル保護管１
内の径の大きな部分に膨潤した高水膨潤性ゴム組成物
３′が充填固定され、人孔部への止水栓の移動および水
の浸入を防止することにより、長期的に止水効果を維持
できる。In FIG. 1 and FIG. 2, when water tries to enter the cable protection tube from the human hole, first, the water-swellable fiber composition mat 5 instantaneously absorbs water and instantaneously absorbs water. The mat 5 'swells and gels to prevent water from entering. Then, the water gradually increases the high water swellable rubber composition 3
And the water-swellable fiber composition mat 5 'adheres to the inside of the cable protection tube and at the same time adheres to the outer periphery of the cable 2 to further protect the cable. The brim portion of the low water swellable rubber composition 4 exposed to the outside of the pipe 1 is a cable protection pipe 1 of a water stopcock.
By preventing intrusion into the inside, the water stopping effect can be maintained for a long time. Further, when water tries to flow into the human hole from the inside of the cable protection tube 1, first, the water-swellable fiber composition mat 5 instantaneously absorbs water and changes to a water-swellable fiber composition mat 5 '. Swells and gels to prevent water intrusion. Thereafter, the water is gradually absorbed by the high water swellable rubber composition 3 and swells to the state of the high water swellable rubber composition 3 ', and the water swellable fiber composition mat 5' comes into close contact with the cable protection tube. , Close to the outer periphery of the cable, and the cable protection tube 1
The swollen high water swellable rubber composition 3 ′ is filled and fixed in the large diameter portion of the inside, preventing the movement of the water stopcock into the human hole and the intrusion of water, thereby providing a long-term water stopping effect. Can be maintained.
またケーブル２は水膨潤性繊維組成物マット５′とゆ
るやかに接触しているので、止水されている状態でも温
度変化や車両振幅による移動に追従でき、ケーブルに対
し過度の拘束力が加わることもない。Also, since the cable 2 is in gentle contact with the water-swellable fiber composition mat 5 ', it can follow the movement due to the temperature change and the vehicle amplitude even when the water is stopped, and an excessive restraining force is applied to the cable. Nor.
また本考案の止水栓は、水膨潤・乾燥のサイクルを繰
り返されても止水効果は維持されるし、さらに従来の止
水栓と異なり、発泡剤の充填やねじの締め付けを伴わな
いし、長期間にわたってほぼ止水栓の原型をとどめてい
るので、装着および撤去作業に熟練を要せず、かつ止水
性も安定している。また止水栓の厚み方向に層分割可能
な水膨潤性繊維組成物マット５が配置されており、水膨
潤性繊維組成物マット５を一部層状にはぎ取ることによ
り、ケーブル径およびケーブル保護管径に対応できるの
で、寸法上わずかの種類を用意すれば済み、経済上有利
である。In addition, the water stopcock of the present invention maintains the water stop effect even if the cycle of water swelling and drying is repeated, and further, unlike the conventional water stopcock, does not involve the filling of the foaming agent and the tightening of the screw, Since the original water stopcock remains almost the same for a long period of time, installation and removal operations do not require skill and the water stoppage is stable. Further, a water-swellable fiber composition mat 5 that can be divided into layers in the thickness direction of the water stopcock is disposed, and the water-swellable fiber composition mat 5 is partially stripped off to form a cable diameter and a cable protection tube diameter. Therefore, it is economically advantageous to prepare only a few types in dimensions.
（実施例） 以下、具体的実施例により本考案を説明するが、本考
案は、これらの実施例により何ら限定されるものではな
い。(Examples) Hereinafter, the present invention will be described with reference to specific examples, but the present invention is not limited to these examples.
下記処方からなるゴム原料を８インチオープンロール
で混練し、高水膨潤性ゴム組成物の約2mm厚のシートを
得る。A rubber material having the following formulation is kneaded with an 8-inch open roll to obtain a sheet having a high water-swelling rubber composition having a thickness of about 2 mm.
天然ゴム（RSS＃３号） 100重量部 亜鉛華 ５ ステアリン酸 １ HAFカーボン ２ ノクセラーTT ２ サンセラーNS ２ アンチゲンＷ ２ クレー 25 吸水樹脂粉末（クラレ製KIゲル） 75 〔低水膨潤性ゴム組成物の調製〕 下記処方からなるゴム原料を８インチオープンロール
で混練し、低水膨潤性ゴム組成物の約2mm厚のシートを
得る。100 parts by weight of natural rubber (RSS # 3) Zinc white 5 Stearic acid 1 HAF carbon 2 Noxeller TT 2 Sunseller NS 2 Antigen W 2 Clay 25 Water-absorbing resin powder (Kuraray KI gel) 75 [Low water swellable rubber composition Preparation] A rubber material having the following formulation is kneaded with an 8-inch open roll to obtain a sheet having a low water swelling rubber composition having a thickness of about 2 mm.
天然ゴム（RSS＃３号） 100重量部 亜鉛華 ５ ステアリン酸 １ HAFカーボン ２ ノクセラーTT ２ サンセラーNS ２ アンチゲンＷ ２ クレー 25 〔厚み方向に層分割可能な水膨潤性繊維組成物の調製〕 蒸留水を自重の約50倍吸水する太さ３デニール、長さ
70mmの水膨潤性アクリル繊維（旭化成工業社製KKF）90K
gと約105℃の融点を有する太さ３デニール、長さ50mmの
熱接着性ポリエステル系繊維（非水膨潤性繊維）10kgを
均一に混合しエアーレイ式ウェブ形成機で目付け100g/m
2の不織シートを得る。次にニードルパンチ機に不織シ
ートを30ストローク／m2にて通過させ、機械的に結合さ
せる。さらに、機械的に結合させた不織シートを６層重
積した後、再び重積した不織シートの上面および下面か
ら各々の面に60ストローク／m2にてニードルパンチ機に
通し、厚さ12mmのマット状物を得る。100 parts by weight of natural rubber (RSS # 3) Zinc flower 5 Stearic acid 1 HAF carbon 2 Noxeller TT 2 Suncellar NS 2 Antigen W 2 Clay 25 [Preparation of water-swellable fiber composition that can be divided into layers in the thickness direction] Distilled water 3 denier, length that absorbs water about 50 times its own weight
70mm water-swellable acrylic fiber (KKF manufactured by Asahi Kasei Kogyo) 90K
g and 10 kg of heat-bondable polyester fiber (non-water-swellable fiber) having a thickness of 3 denier and a length of 50 mm having a melting point of about 105 ° C and a uniform weight of 100 g / m with an air-lay web forming machine.
Obtain 2 non-woven sheets. Next, the nonwoven sheet is passed through a needle punching machine at 30 strokes / m 2 and mechanically joined. Further, six layers of mechanically bonded nonwoven sheets are stacked and then passed through a needle punching machine at 60 strokes / m 2 from the upper and lower surfaces of the stacked nonwoven sheets again. Get a 12mm mat.
次に、マット状物を、加熱したプレスロール間に通し
て、厚み方向に６層に分割可能な、厚さ20mm、目付け70
0g/m2の水膨潤性繊維組成物マットを得る。Next, the mat-like material is passed between heated press rolls, and can be divided into six layers in the thickness direction.
A water swellable fiber composition mat of 0 g / m 2 is obtained.
前記の方法にて調製した低水膨潤性ゴム組成物シート
160gおよび高水膨潤性ゴム組成物シート40gを、第１図
に示す筒状体の配置どおりに筒状体金型に入れ、プレス
成型機で160℃で10分間加硫して、加硫した高水膨潤性
ゴム組成物と低水膨潤性ゴム組成物で形成された筒状体
を得る。次いで筒状体の半径方向に半割状の裁断部をカ
ッタにて設けた。Low water swellable rubber composition sheet prepared by the above method
160 g and 40 g of the highly water-swellable rubber composition sheet were placed in a cylindrical mold according to the arrangement of the cylindrical body shown in FIG. 1, and vulcanized at 160 ° C. for 10 minutes by a press molding machine, and vulcanized. A cylindrical body formed of the high water swellable rubber composition and the low water swellable rubber composition is obtained. Next, a half-cut portion was provided with a cutter in the radial direction of the cylindrical body.
次に、筒状体の内周面全体および外周面の外嵌する箇
所に厚み方向に層分割可能な水膨潤性繊維組成物マット
を、クロロプレン系接着剤を介して接着固定し、本考案
のケーブルが収容されたケーブル保護管端の止水栓を得
る。Next, a water-swellable fiber composition mat that can be divided into layers in the thickness direction is bonded and fixed via a chloroprene-based adhesive to the entire inner peripheral surface and the outer fitting surface of the outer peripheral surface of the cylindrical body. Obtain a water stopcock at the end of the cable protection tube containing the cable.
得られた本考案の止水栓をケーブルが収容されたケー
ブル保護管端に、第１図のように取り付け、６か月間放
置して、止水栓の止水効果を確認したところ、水の浸入
は全く認められなかった。The obtained water stopcock of the present invention was attached to the end of the cable protection tube in which the cable was accommodated as shown in FIG. 1 and left for 6 months to confirm the water stoppage effect of the water stopcock. No intrusion was observed.
第６図、第７図に吸水性樹脂粉末の配合量による天然
ゴムの吸水倍率のデータを示す。FIGS. 6 and 7 show data on the water absorption ratio of natural rubber depending on the amount of the water-absorbent resin powder.
図中phrは天然ゴム組成物100重量部に対する吸水性樹
脂粉末の添加量（重量部）を表わす。In the figure, phr represents the amount (parts by weight) of the water-absorbing resin powder to 100 parts by weight of the natural rubber composition.
これらのデータは、ケーブル保護管端内径と、ケーブ
ル外径（11mm〜70mm）の関係から適性倍率は２〜４倍と
なり、悪い条件のイオン水で配合量を算定した。In these data, the appropriate magnification was 2 to 4 times based on the relationship between the inner diameter of the cable protection tube end and the outer diameter of the cable (11 mm to 70 mm), and the mixing amount was calculated using ion water under bad conditions.
表１に天然ゴムと吸水性樹脂粉末を配合した場合の硬
度のデータを示す。Table 1 shows the hardness data when the natural rubber and the water-absorbent resin powder are blended.
表２に本考案の止水栓のケーブル振動や移動等におけ
る水密性のデータを示す。 Table 2 shows the watertightness data of the water stopcock of the present invention in terms of cable vibration and movement.
（考案の効果） 以上説明したように、本考案のケーブルが収容された
ケーブル保護管端の止水栓は、高水膨潤性ゴム組成物と
低水膨潤性ゴム組成物により形成された筒状体の内周面
および外周面に配置されている水膨潤性繊維組成物マッ
トにより、ケーブルが収容されたケーブル保護管端に水
が浸入した場合、水膨潤性繊維組成物マットが、瞬時に
吸水してゲル状に膨潤して水の浸入を妨げるとともに、
ケーブルにゆるやかに接触することにより、潤滑油的な
役割を果たし、温度変化や車両振動による長さ方向の伸
縮や移動に対し長期間安定した止水能力を発現するとと
もに、ケーブルに対し過度の拘束力が加わらない。さら
に、厚み方向に層分割可能な水膨潤性繊維組成物マット
を、手で場合により１層以上はぎ取ることにより、ケー
ブルの外径および保護管の径に適合させることができる
ので、寸法上わずかの種類の止水栓のみで対応できる。 (Effects of the Invention) As described above, the water stopcock at the end of the cable protection tube in which the cable of the present invention is accommodated is a tubular member formed of the high water swellable rubber composition and the low water swellable rubber composition. Due to the water swellable fiber composition mat disposed on the inner and outer peripheral surfaces of the body, when water enters the end of the cable protection tube containing the cable, the water swellable fiber composition mat instantly absorbs water. Swells into a gel to prevent water intrusion,
By gently contacting the cable, it acts as a lubricating oil, and has a long-term stable water stopping ability against longitudinal expansion and contraction and movement due to temperature changes and vehicle vibration, and excessive restraint on the cable. No power is added. Furthermore, the water-swellable fiber composition mat, which can be divided into layers in the thickness direction, can be adapted to the outer diameter of the cable and the diameter of the protective tube by removing one or more layers by hand, if necessary. Only the type of stopcock can be used.
また、従来の止水栓と異なり、発泡剤の充填やねじの
締め付けを伴わないなど作業面においても優れている。Further, unlike the conventional water stopcock, it is excellent in workability, such as not involving the filling of a foaming agent and the tightening of screws.
実際の現場においても、ケーブル保護管内への止水が
確実にできることから、保護管内への土砂の堆積、保護
管内の錆を防止する利点がある。Even at an actual site, since water can be reliably stopped in the cable protection tube, there is an advantage that sedimentation in the protection tube and rust in the protection tube are prevented.
また逆に、ケーブル保護管が事故などで水密性を失っ
た場合に、人孔部への流水も防ぐことができる利点もあ
る。Conversely, when the cable protection tube loses water tightness due to an accident or the like, there is an advantage that water can be prevented from flowing into the human hole.
第１図は本考案の止水栓をケーブル保護管端に取り付け
た状況を示す断面図、 第２図は本考案の止水栓を取り付けたケーブル保護管端
に水が流入し、止水栓の高水膨潤性ゴム組成物が膨潤し
て止水状態を発現した状況を説明した斜視図、 第３図は従来の発泡剤を主体とした充填物をケーブルと
保護管端の間に充填した状況を示す断面図、 第４図はケーブルの外周面にゴム筒状体を取り付け、該
筒状体に内挿されたねじ式の緊結具を締め付けることに
より、ケーブル保護管端に止水栓を取り付けた状況を示
す断面図、 第５図は高吸水ゴム部材からなる止水栓を埋設管端に取
り付けた状況を示す断面図、 第６図、第７図は吸水性樹脂粉末の配合による天然ゴム
の吸水倍率のデータを示す図である。 １…ケーブル保護管の端部 ２…ケーブル ３…高水膨潤性ゴム組成物 ３′…膨潤した高水膨潤性ゴム組成物 ４…低水膨潤性ゴム組成物 5,5′…水膨潤性繊維組成物マット ６…止水栓の裁断部 ７…スポンジ ８…発泡剤を主体とした充填物 ９…ゴム組成体 10…受金物 11…締付け用ボルト 12…埋設管 13…高吸水ゴム部材 14…内空部FIG. 1 is a cross-sectional view showing a state in which the water stopcock according to the present invention is attached to the end of the cable protection tube, and FIG. FIG. 3 is a perspective view illustrating a state in which the highly water-swellable rubber composition of FIG. 1 has swelled to exhibit a water-blocking state. FIG. 3 shows a conventional filler mainly composed of a foaming agent filled between a cable and an end of a protective tube. FIG. 4 is a cross-sectional view showing the situation. FIG. 4 shows a rubber tubular body attached to the outer peripheral surface of the cable, and tightens a screw-type fastener inserted into the tubular body to thereby attach a water stopcock to the end of the cable protection tube. FIG. 5 is a cross-sectional view showing a state in which a water stopcock made of a highly water-absorbing rubber member is mounted on an end of a buried pipe; FIG. 6 and FIG. It is a figure which shows the data of the water absorption ratio of rubber. DESCRIPTION OF SYMBOLS 1 ... End of cable protection tube 2 ... Cable 3 ... High water swellable rubber composition 3 '... Swelled high water swellable rubber composition 4 ... Low water swellable rubber composition 5,5' ... Water swellable fiber Composition mat 6: Cut part of water stopcock 7 ... Sponge 8 ... Filling mainly with foaming agent 9 ... Rubber composition 10 ... Receptacle 11 ... Tightening bolt 12 ... Buried pipe 13 ... High water absorbing rubber member 14 ... Inner space
───────────────────────────────────────────────────── フロントページの続き (72)考案者 浅井 泰蔵 福岡県福岡市博多区比恵町９番24号 福 岡クロス工業株式会社内 (72)考案者 河辺 豊彦 福岡県福岡市博多区比恵町９番24号 福 岡クロス工業株式会社内 (56)参考文献 特開 平２−246721（ＪＰ，Ａ) 実開 平２−41624（ＪＰ，Ｕ) ──────────────────────────────────────────────────続 き Continuing on the front page (72) Taizo Asai 9-24, Hie-cho, Hakata-ku, Fukuoka, Fukuoka Prefecture Inside Fukuoka Cross Industry Co., Ltd. (72) Toyohiko Kawabe 9 Hie-cho, Hakata-ku, Fukuoka, Fukuoka No. 24 Fukuoka Cross Industry Co., Ltd. (56) References JP-A-2-246721 (JP, A) JP-A-2-41624 (JP, U)
Claims (1)
物マットが高水膨潤性ゴム組成物と低水膨潤性ゴム組成
物で形成された筒状体の内周面全面および外周面に配置
されており、 該厚み方向に層分割可能な水膨潤性繊維組成物マット
は、水膨潤性繊維95〜10重量部と非膨潤性繊維５〜90重
量部の混合物の不織シートを複数層積層したものであ
り、 該高水膨潤性ゴム組成物は、天然ゴムまたは合成ゴム組
成物100重量部と吸水性樹脂粉末30〜250重量部の混合物
を加硫したものであり、 該低水膨潤性ゴム組成物は、天然ゴムまたは合成ゴム組
成物100重量部と吸水性樹脂粉末０〜30重量部の混合物
を加硫したものであり、 かつ該筒状体の半径方向に、半割状の裁断部を持つ ことを特徴とするケーブル保護管端の止水栓。1. A water-swellable fiber composition mat which can be divided into layers in the thickness direction is made of a high water-swellable rubber composition and a low water-swellable rubber composition. The water-swellable fiber composition mat, which can be divided into layers in the thickness direction, comprises a plurality of nonwoven sheets of a mixture of 95 to 10 parts by weight of water-swellable fibers and 5 to 90 parts by weight of non-swellable fibers. The high water swellable rubber composition is obtained by vulcanizing a mixture of 100 parts by weight of a natural rubber or a synthetic rubber composition and 30 to 250 parts by weight of a water absorbent resin powder. The swellable rubber composition is obtained by vulcanizing a mixture of 100 parts by weight of a natural rubber or a synthetic rubber composition and 0 to 30 parts by weight of a water-absorbent resin powder, and is half-split in the radial direction of the cylindrical body. A water stopcock at the end of a cable protection tube, characterized by having a cut portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990096446U JP2572021Y2 (en) | 1990-09-17 | 1990-09-17 | Water stopcock at the end of the cable protection tube containing the cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990096446U JP2572021Y2 (en) | 1990-09-17 | 1990-09-17 | Water stopcock at the end of the cable protection tube containing the cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0454429U JPH0454429U (en) | 1992-05-11 |
| JP2572021Y2 true JP2572021Y2 (en) | 1998-05-20 |
Family
ID=31835996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990096446U Expired - Lifetime JP2572021Y2 (en) | 1990-09-17 | 1990-09-17 | Water stopcock at the end of the cable protection tube containing the cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2572021Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2545336B2 (en) * | 1993-12-24 | 1996-10-16 | 株式会社大阪防水建設社 | Waterproofing method of cable conduit |
| JP3680878B2 (en) * | 1996-07-26 | 2005-08-10 | 三洋化成工業株式会社 | Waterproof material and waterproof structure for underground buried cable with protective pipe |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0626028Y2 (en) * | 1988-09-12 | 1994-07-06 | エヌオーケー株式会社 | Waterproof sealing device |
-
1990
- 1990-09-17 JP JP1990096446U patent/JP2572021Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0454429U (en) | 1992-05-11 |
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| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |