JPH1056727A - Block for laying cable - Google Patents
Block for laying cableInfo
- Publication number
- JPH1056727A JPH1056727A JP22604296A JP22604296A JPH1056727A JP H1056727 A JPH1056727 A JP H1056727A JP 22604296 A JP22604296 A JP 22604296A JP 22604296 A JP22604296 A JP 22604296A JP H1056727 A JPH1056727 A JP H1056727A
- Authority
- JP
- Japan
- Prior art keywords
- cable
- synthetic resin
- hole
- laying
- block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/4459—Ducts; Conduits; Hollow tubes for air blown fibres
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electric Cable Installation (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、合成樹脂被覆ケ−ブル
を布設するのに使用するコンクリ−ト製のブロックに関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete block used for laying a cable coated with a synthetic resin.
【０００２】[0002]
【従来技術】近年、通信ケ−ブルには、同軸ケ−ブルの
代わりに通信容量の大きい光ファイバ−ケ−ブルが使用
されるようになってきたが、このケ−ブルを新たに布設
する場合の１方法として、ケ−ブル布設用穴を内部に有
するコンクリ−ト製のブロックを接続しながら地中に埋
めて、地中にケ−ブル道を形成し、ケ−ブル布設用穴に
ケ−ブルを通す方法がある。2. Description of the Related Art In recent years, instead of a coaxial cable, an optical fiber cable having a large communication capacity has been used as a communication cable, but this cable is newly laid. In one case, a concrete block having a cable laying hole inside is buried in the ground while being connected, a cable path is formed in the ground, and the cable laying hole is formed in the ground. There is a method of passing a cable.
【０００３】この方法は、図４、図５に示すように、ブ
ロック１として、前後方向に貫通した直線状のケ−ブル
布設用穴２を複数設けて、前後に凹部３と凸部４とを形
成したものを用いて、このブロック１を地中に埋めなが
ら凹部３と凸部４とを嵌合させることによりケ−ブル布
設用穴２の連通したケ−ブル道を形成した後、ケ−ブル
布設用穴２に光ファイバ−ケ−ブル５を通す方法で行わ
れている。このケ−ブル道へのケ−ブルの通し方はブロ
ック１のケ−ブル布設用穴２にワイヤ−を通しながら地
中に埋めて、ケ−ブル道がある程度の長さになった時点
でワイヤ−の先端に光ファイバ−ケ−ブル５を取り付
け、ワイヤ−を引き抜く方法で行っている。In this method, as shown in FIGS. 4 and 5, a plurality of straight cable laying holes 2 penetrating in the front-rear direction are provided as a block 1, and a concave portion 3 and a convex portion 4 are formed in front and rear. After the block 1 is buried in the ground and the concave portion 3 and the convex portion 4 are fitted to each other to form a cable path through which the cable laying hole 2 communicates, the cable path is formed. The optical fiber cable 5 is passed through the cable laying hole 2. The cable is passed through the cable laying hole 2 of the block 1 by burying the cable in the ground while passing the wire through the cable. An optical fiber cable 5 is attached to the tip of the wire, and the wire is pulled out.
【０００４】この方法で使用するブロック１は、型枠に
ケ−ブル布設用穴２を設けるための型棒を配置して、生
コンクリ−トを流し込み、養生した後、脱枠、型棒の抜
き取りにより製造しているが、型棒としては、通常、片
側に向かうに連れて次第に細くなった円柱状のものを用
いている。ここで、片側に向かうに連れて細くなったも
のを用いるのは養生後抜き取りできるようにするためで
ある。このため、ケ−ブル布設用穴２は内径が図４に示
すように片側に向かうに連れて次第に小さくなってい
る。しかし、型棒は直径２０ｃｍ前後で、重量が重いた
め、その配置、抜き取りに多くの労力を要するという問
題があった。In the block 1 used in this method, a mold rod for arranging a cable laying hole 2 is arranged in a mold frame, a raw concrete is poured and cured, and then the frame is removed. Although it is manufactured by extraction, as a mold rod, a cylindrical shape that gradually becomes thinner toward one side is used. Here, the reason for using the taper taper toward one side is to allow extraction after curing. For this reason, the inside diameter of the cable laying hole 2 gradually decreases toward one side as shown in FIG. However, the mold rod has a diameter of about 20 cm and is heavy, so that there is a problem that a lot of labor is required for its arrangement and removal.
【０００５】ところで、光ファイバ−ケ−ブル５は、耐
食上、表面をポリエチレンのような合成樹脂で被覆して
あるが、ケ−ブル布設用穴２の内面が上記のように型棒
を抜き取っただけのものであると非常に粗いため、ケ−
ブルの挿入先端側の部分は長い距離にわたり粗いコンク
リ−トの表面で擦られる。このため、表面の合成樹脂が
削られ、耐食性が低下してしまうという問題もあった。The optical fiber cable 5 is coated on its surface with a synthetic resin such as polyethylene for corrosion resistance, but the inner surface of the cable laying hole 2 is pulled out of the mold rod as described above. Because it is very rough if it is just a
The portion of the insert distal end is rubbed over a long distance with a rough concrete surface. For this reason, there was a problem that the synthetic resin on the surface was shaved and the corrosion resistance was reduced.
【０００６】[0006]
【発明が解決しようとする課題】そこで、本発明は、こ
れらの問題を解消したケ−ブル布設用ブロックを提供す
るものである。SUMMARY OF THE INVENTION Accordingly, the present invention provides a cable laying block which solves these problems.
【０００７】[0007]
【課題を解決するための手段】本発明は、前後方向に貫
通したケ−ブル布設用穴を内部に有するコンクリ−ト製
のブロックにおいて、ケ−ブル布設用穴の内面を合成樹
脂で被覆した。SUMMARY OF THE INVENTION According to the present invention, there is provided a concrete block having therein a cable laying hole penetrating in a front-rear direction, wherein an inner surface of the cable laying hole is coated with a synthetic resin. .
【０００８】[0008]
【作用】合成樹脂被覆材として、例えば、合成樹脂製パ
イプのように剛性を有するものを使用すれば、製造の際
に型棒として作用するので、従来生コンクリ−トの流し
込み前に型枠に配置していた型棒の代わりに合成樹脂パ
イプを配置して、コンクリ−トの養生後そのまま放置す
れば、ケ−ブル布設用穴を合成樹脂で被覆したブロック
を製造できる。このブロック製造の際、合成樹脂パイプ
は軽いので、型枠への配置は容易であるうえ、養生後に
抜き取りを必要としないので、作業性がよい。If a material having rigidity such as a synthetic resin pipe is used as a synthetic resin coating material, it acts as a mold rod at the time of manufacturing. If a synthetic resin pipe is arranged in place of the arranged mold rod and left as it is after curing the concrete, a block in which the cable laying holes are covered with the synthetic resin can be manufactured. At the time of manufacturing the block, the synthetic resin pipe is light, so that it is easy to dispose it on the formwork, and since it does not need to be extracted after curing, the workability is good.
【０００９】また、合成樹脂パイプはケ−ブル被覆の合
成樹脂と硬度がほぼ同じで、摩擦抵抗も小さいので、ケ
−ブルをケ−ブル布設用穴に通す際、表面が擦られて
も、表面が損傷されることがない。合成樹脂被覆材の表
面は平滑でもよいが、凸部を設けると、ケ−ブル表面と
の接触面積が小さくなるため、ケ−ブルを通し易くな
る。凸部を設ける方法としては、山状の突起を設ける方
法、長手方向または内周方向にリブを設ける方法、蛇腹
にする方法などがある。Further, the synthetic resin pipe has almost the same hardness as the synthetic resin of the cable coating, and has a small frictional resistance. The surface is not damaged. The surface of the synthetic resin coating material may be smooth, but if a convex portion is provided, the area of contact with the cable surface is reduced, so that the cable can be easily passed. Examples of the method of providing the convex portion include a method of providing a mountain-shaped projection, a method of providing a rib in the longitudinal direction or the inner circumferential direction, and a method of forming a bellows.
【００１０】[0010]
実施例１ 図１、図２は、本発明に係るケ−ブル布設用ブロック１
ａの実施例を示すもので、ケ−ブル布設穴２の内周には
合成樹脂パイプ６が全長にわたり配置されている。この
パイプは、ブロック製造の際、生コンクリ−トを型枠に
流し込む前に型枠に組み込んで、ブロックと一体にした
もので、全長の内径は等しく、内面は平滑になってい
る。Embodiment 1 FIGS. 1 and 2 show a cable laying block 1 according to the present invention.
In this embodiment, a synthetic resin pipe 6 is arranged on the inner periphery of the cable installation hole 2 over the entire length. This pipe is integrated with the block by incorporating the raw concrete into the form before pouring the block into the form during the production of the block, and has an equal overall length inside diameter and a smooth inner surface.
【００１１】実施例２ 図３は、本発明に係るケ−ブル布設用ブロック１ａの他
の実施例を示すもので、実施例１の合成樹脂パイプ６の
内面に長手方向に伸長したリブ７を複数設けたものであ
る。Embodiment 2 FIG. 3 shows another embodiment of the cable laying block 1a according to the present invention. The rib 7 extending in the longitudinal direction is provided on the inner surface of the synthetic resin pipe 6 of Embodiment 1. A plurality is provided.
【００１２】[0012]
【発明の効果】以上のように、本発明のケ−ブル布設用
ブロックは、内面がケ−ブル被覆材とほぼ等しい硬度
で、かつ、摩擦抵抗もコンクリ−トより小さいので、ケ
−ブルを通す際に布設用穴と接触しても、被覆材の合成
樹脂が損傷されることがない。As described above, in the cable laying block of the present invention, the inner surface has a hardness almost equal to that of the cable coating material and the frictional resistance is smaller than that of the concrete. The synthetic resin of the covering material will not be damaged even if it comes into contact with the laying hole when passing.
【図１】は本発明に係るケ−ブル布設用ブロックの実施
例正面図を示すものである。FIG. 1 is a front view of an embodiment of a cable laying block according to the present invention.
【図２】は図１のＢ−Ｂでの断面図である。FIG. 2 is a sectional view taken along line BB in FIG.
【図３】は本発明に係るケ−ブル布設用ブロックの他の
実施例正面図を示すものである。FIG. 3 is a front view of another embodiment of the cable laying block according to the present invention.
【図４】は従来のケ−ブル布設用ブロックを用いてケ−
ブルを布設する方法を示すものである。FIG. 4 shows a cable using a conventional cable laying block.
It shows a method of laying a bull.
【図５】は図４のＡ−Ａでの断面図である。FIG. 5 is a sectional view taken along line AA of FIG.
１、１ａ…ブロック、２…ケ−ブル布設用穴、３…凹
部、４…凸部、５…光ファイバ−ケ−ブル、６…合成樹
脂パイプ、７…リブ、1, 1a ... block, 2 ... cable laying hole, 3 ... concave portion, 4 ... convex portion, 5 ... optical fiber cable, 6 ... synthetic resin pipe, 7 ... rib,
Claims (2)
を内部に有するコンクリ−ト製のブロックにおいて、ケ
−ブル布設用穴の内面を合成樹脂で被覆したことを特徴
とするケ−ブル布設用ブロック。1. A cable made of a concrete block having therein a cable laying hole penetrating in the front-rear direction, wherein the inner surface of the cable laying hole is covered with a synthetic resin. Installation block.
を特徴とする請求項１に記載のケ−ブル布設用ブロッ
ク。2. The cable laying block according to claim 1, wherein a convex portion is provided on the surface of the coated synthetic resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22604296A JPH1056727A (en) | 1996-08-08 | 1996-08-08 | Block for laying cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22604296A JPH1056727A (en) | 1996-08-08 | 1996-08-08 | Block for laying cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1056727A true JPH1056727A (en) | 1998-02-24 |
Family
ID=16838879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22604296A Pending JPH1056727A (en) | 1996-08-08 | 1996-08-08 | Block for laying cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1056727A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017502903A (en) * | 2014-07-14 | 2017-01-26 | サン−ゴバン グラス フランス | Smart glass structure and window glass for transportation |
-
1996
- 1996-08-08 JP JP22604296A patent/JPH1056727A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017502903A (en) * | 2014-07-14 | 2017-01-26 | サン−ゴバン グラス フランス | Smart glass structure and window glass for transportation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20050916 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20051004 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20060214 |