JP6807784B2

JP6807784B2 - Anti-termite structure of pipe connection part of underground buried box, anti-termite method of pipe connection part of underground buried box, anti-termite device for pipe connection part of underground buried box, and pipe connection part of underground buried box Ant protection for

Info

Publication number: JP6807784B2
Application number: JP2017050624A
Authority: JP
Inventors: 重雄柴田; 安田　真之; 真之安田; 一啓加納
Original assignee: Mirai Industry Co Ltd; Kyudenko Corp
Current assignee: Mirai Industry Co Ltd; Kraftia Corp
Priority date: 2017-03-15
Filing date: 2017-03-15
Publication date: 2021-01-06
Anticipated expiration: 2037-03-15
Also published as: JP2018157637A

Description

この発明は、地中埋設箱の、保護管が接続される管接続部の、防蟻構造および防蟻方法、ならびに、その管接続部用の防蟻装置および防蟻具に関するものである。 The present invention relates to an anti-termite structure and an anti-termite method for a pipe connection portion to which a protective pipe is connected in an underground buried box, and an anti-termite device and an anti-termite tool for the pipe connection portion.

従来より、ケーブルが配設される管路内に白蟻が住むのを防止するため、管路内に防蟻剤を散布して白蟻を駆除する方法が知られていた（例えば、特許文献１参照）。しかしながら、この方法においては、管路内に雨水や地下水が流れ込むと、その雨水や地下水とともに防蟻剤が流れてしまい、防蟻効果が低下する虞があった。 Conventionally, in order to prevent termites from living in the pipeline in which the cable is arranged, a method of spraying an anti-termite agent in the pipeline to exterminate termites has been known (see, for example, Patent Document 1). ). However, in this method, when rainwater or groundwater flows into the pipeline, the anti-termite agent flows together with the rainwater or groundwater, and there is a risk that the anti-termite effect may be reduced.

そこで、管路の両端を封止部材で閉塞し、両封止部材間に、水溶化した防蟻剤を吸収させた吸水性高分子を充填することがあった（例えば、特許文献２参照）。 Therefore, both ends of the pipeline may be closed with sealing members, and both sealing members may be filled with a water-absorbing polymer that has absorbed a water-solubilized anti-termite agent (see, for example, Patent Document 2). ..

特許第２７９５５１２号公報Japanese Patent No. 2795512 特開２００９−１１１２８号公報JP-A-2009-11128

ところで、前記従来の封止部材で管路の両端を閉塞する方法では、管路（保護管）内に雨水や地下水が流れ込むと、その雨水や地下水が抜けることができず、ケーブルが常に水に浸されることとなった。しかし、ケーブルは、水に長期間浸されることで、その水がケーブル内に浸透し絶縁性が低下する等の虞があった。 By the way, in the conventional method of closing both ends of a pipeline with a sealing member, when rainwater or groundwater flows into the pipeline (protective pipe), the rainwater or groundwater cannot escape, and the cable is always in the water. It was decided to be immersed. However, if the cable is immersed in water for a long period of time, there is a risk that the water may permeate into the cable and the insulation property may be deteriorated.

この発明は、上記した従来の欠点を解決するためになされたものであり、その目的とするところは、白蟻の侵入を防ぐことができ、かつ、ケーブルへの水の浸透を防ぐことができる、地中埋設箱の管接続部の、防蟻構造および防蟻方法、ならびに、地中埋設箱の管接続部用の、防蟻装置および防蟻具を提供することにある。 The present invention has been made to solve the above-mentioned conventional drawbacks, and an object of the present invention is to prevent termites from invading and water from penetrating into a cable. It is an object of the present invention to provide an anti-termite structure and an anti-termite method for a pipe connection portion of an underground buried box, and an anti-termite device and an anti-termite tool for the pipe connection portion of the underground buried box.

この発明に係る地中埋設箱の管接続部の、防蟻構造および防蟻方法、ならびに、地中埋設箱の管接続部用の、防蟻装置および防蟻具は、前記目的を達成するために、次の構成からなる。すなわち、
請求項１に記載の発明に係る地中埋設箱の管接続部の防蟻構造は、地中埋設箱の側壁の貫通孔に、ケーブルを保護する保護管が直接または接続具を介して接続される管接続部の、前記地中埋設箱から前記保護管への白蟻の侵入を防ぐ防蟻構造である。この防蟻構造は、前記保護管内と前記地中埋設箱内とに渡って前記ケーブルが配設される。そして、筒状に形成されて、少なくとも内面側に防蟻成分を含有する防蟻具が、内部に前記ケーブルが挿入されて、前記保護管または／および前記接続具の内側に配置される。さらに、前記防蟻具と、前記保護管または／および前記接続具との間が、防蟻成分を含有するシール材によりシールされる。 The anti-termite structure and anti-termite method of the pipe connection portion of the underground buried box according to the present invention, and the anti-termite device and anti-termite tool for the pipe connection portion of the underground buried box are for achieving the above object. In addition, it consists of the following configurations. That is,
In the termite-proof structure of the pipe connection portion of the underground buried box according to the first aspect of the invention, a protective pipe for protecting the cable is directly connected to the through hole of the side wall of the underground buried box or via a connector. It is an ant-proof structure that prevents termites from invading the protective pipe from the underground box of the pipe connecting portion. In this anti-termite structure, the cable is arranged in the protective tube and in the underground box. Then, an anti-termite tool formed in a tubular shape and containing an anti-termite component at least on the inner surface side is arranged inside the protective tube and / and the connecting tool with the cable inserted inside. Further, the ant-proofing tool and the protective tube and / and the connecting tool are sealed with a sealing material containing the ant-proofing component.

この防蟻構造によると、筒状の防蟻具が、保護管または／および接続具の内側に配置され、さらに、防蟻具と、保護管または／および接続具との間が、シール材によりシールされる。そして、防蟻具は、少なくとも内面側に防蟻成分を含有し、シール材は、防蟻成分を含有している。このため、白蟻が、保護管あるいは接続具の内面伝いに、地中埋設箱内から保護管内へと侵入しようとしても、この防蟻具とシール材とで、その侵入を防ぐことができる。そして、防蟻具は、筒状に形成されており、保護管内に雨水や地下水が流れ込んだとしても、その雨水や地下水は、防蟻具内を通過して、地中埋設箱側へと流れ出ることができる。このため、ケーブルが水に長期間浸されることがない。 According to this anti-termite structure, a tubular anti-termite device is placed inside the protective tube and / and the connector, and further, a sealing material is provided between the anti-termite device and the protective tube and / and the connector. Be sealed. The anti-termite tool contains an anti-termite component at least on the inner surface side, and the sealing material contains an anti-termite component. Therefore, even if termites try to invade the protective pipe from the underground buried box along the inner surface of the protective pipe or the connector, the termite-proofing tool and the sealing material can prevent the invasion. The ant-proofing tool is formed in a tubular shape, and even if rainwater or groundwater flows into the protective pipe, the rainwater or groundwater passes through the ant-proofing tool and flows out to the underground box side. be able to. Therefore, the cable is not immersed in water for a long period of time.

また、請求項２に記載の発明に係る地中埋設箱の管接続部の防蟻構造は、請求項１に記載の防蟻構造において、前記ケーブルの外周の、少なくとも前記防蟻具と重なる一部の位置は、少なくとも外面側に防蟻成分を含有する、テープまたは管状体からなる覆い材で密接に覆われる。こうして、ケーブルの外周が、防蟻成分を含有する覆い材で覆われることで、白蟻が、ケーブルの外周伝いに、地中埋設箱内から保護管内へと侵入するのを防ぐことができる。 Further, the anti-termite structure of the pipe connection portion of the underground buried box according to the invention of claim 2 overlaps with at least the anti-termite tool on the outer periphery of the cable in the anti-termite structure according to claim 1. The position of the portion is closely covered with a covering material made of tape or a tubular body containing an anti-termite component at least on the outer surface side. In this way, the outer circumference of the cable is covered with a covering material containing an anti-termite component, so that termites can be prevented from entering the protective tube from the underground buried box along the outer circumference of the cable.

また、請求項３に記載の発明に係る地中埋設箱の管接続部の防蟻構造は、請求項１または２に記載の防蟻構造において、前記防蟻具は、その長手方向に、分割されて並ぶ、複数の防蟻具分割筒体からなる。こうして、防蟻具が複数の防蟻具分割筒体からなることから、保護管または／および接続具における、防蟻具が配置される部分が、湾曲している場合であっても、その湾曲に、防蟻具を容易に追従させることができる。 Further, the anti-termite structure of the pipe connection portion of the underground buried box according to the invention of claim 3 is the anti-termite structure according to claim 1 or 2, wherein the anti-termite tool is divided in the longitudinal direction thereof. It consists of multiple ant-proof split cylinders that are lined up. In this way, since the anti-termite is composed of a plurality of anti-termite split cylinders, the portion of the protective tube or / and the connector on which the anti-termite is placed is curved even if it is curved. In addition, the ant-proofing device can be easily followed.

また、請求項４に記載の発明に係る地中埋設箱の管接続部の防蟻方法は、地中埋設箱の側壁の貫通孔に、ケーブルを保護する保護管が直接または接続具を介して接続される管接続部の、前記地中埋設箱から前記保護管への白蟻の侵入を防ぐ防蟻方法である。この防蟻方法は、筒状に形成され、少なくとも内面側に防蟻成分を含有し、長手方向に連続する切割部を有する防蟻具に、前記切割部から、前記保護管内と前記地中埋設箱内とに渡って配設された前記ケーブルを内部に挿入するようにして、その防蟻具を、前記保護管内または／および前記接続具内に挿入するするとともに、前記防蟻具と、前記保護管または／および前記接続具との間を、防蟻成分を含有するシール材によりシールする。 Further, in the method for preventing termites at the pipe connection portion of the underground buried box according to the fourth aspect of the invention, a protective pipe for protecting the cable is directly or via a connector in the through hole of the side wall of the underground buried box. This is an anti-termite method for preventing termites from invading the protective pipe from the underground box of the connected pipe connection portion. In this ant-proofing method, the ant-proofing tool is formed in a tubular shape, contains an ant-proofing component at least on the inner surface side, and has a cutting portion continuous in the longitudinal direction, and is buried in the protective pipe and in the ground from the cutting portion. The cable arranged across the box is inserted into the inside, and the anti-termite is inserted into the protective tube and / and the connector, and the anti-termite and the above-mentioned Seal between the protective tube and / and the connector with a sealing material containing an anti-termite component.

この防蟻方法によると、筒状の防蟻具が、保護管または／および接続具の内側に配置され、さらに、防蟻具と、保護管または／および接続具との間が、シール材によりシールされる。そして、防蟻具は、少なくとも内面側に防蟻成分を含有し、シール材は、防蟻成分を含有している。このため、白蟻が、保護管あるいは接続具の内面伝いに、地中埋設箱内から保護管内へと侵入しようとしても、この防蟻具とシール材とで、その侵入を防ぐことができる。そして、防蟻具は、筒状に形成されており、保護管内に雨水や地下水が流れ込んだとしても、その雨水や地下水は、防蟻具内を通過して、地中埋設箱側へと流れ出ることができる。このため、ケーブルが水に長期間浸されることがない。 According to this anti-termite method, a tubular anti-termite is placed inside the protective tube and / and the connector, and a sealing material is provided between the anti-termite and the protective tube and / and the connector. Be sealed. The anti-termite tool contains an anti-termite component at least on the inner surface side, and the sealing material contains an anti-termite component. Therefore, even if termites try to invade the protective pipe from the underground buried box along the inner surface of the protective pipe or the connector, the termite-proofing tool and the sealing material can prevent the invasion. The ant-proofing tool is formed in a tubular shape, and even if rainwater or groundwater flows into the protective pipe, the rainwater or groundwater passes through the ant-proofing tool and flows out to the underground box side. be able to. Therefore, the cable is not immersed in water for a long period of time.

また、請求項５に記載の発明に係る地中埋設箱の管接続部の防蟻方法は、請求項４に記載の防蟻方法において、前記防蟻具は、前記保護管または／および前記接続具の内径よりも大きい外径を有して、前記切割部から前記ケーブルを挿入する際には、その切割部を広げて挿入し、前記防蟻具を前記保護管内または／および前記接続具内に挿入する際は、その防蟻具を縮径させて挿入する。こうして、防蟻具の外径が大きく、その防蟻具を縮径させて、保護管内または／および接続具内に挿入することで、防蟻具を保護管または／および接続具に密接させることができ、それら防蟻具と、保護管または／および接続具との間のシールを、容易に行うことができる。 Further, the method for preventing ants in the pipe connection portion of the underground buried box according to the invention according to claim 5 is the method for preventing ants according to claim 4, wherein the ant-proofing tool is the protective tube and / and the connection. When the cable is inserted from the cut portion with an outer diameter larger than the inner diameter of the tool, the cut portion is widened and inserted, and the anti-termite tool is inserted in the protective tube and / and in the connector. When inserting into, the ant-proof device is reduced in diameter and inserted. In this way, the outer diameter of the anti-termite is large, and the anti-termite is reduced in diameter and inserted into the protective tube and / and the connector to bring the anti-termite into close contact with the protective tube and / and the connector. And the sealing between those anti-termites and the protective tube and / and the fittings can be easily done.

また、請求項６に記載の発明に係る地中埋設箱の管接続部の防蟻方法は、請求項４または５に記載の防蟻方法において、前記防蟻具を前記保護管内または／および前記接続具内に挿入する前、または後に、前記ケーブルの外周の、少なくとも前記防蟻具と重なることとなる一部の位置を、少なくとも外面側に防蟻成分を含有する、テープまたは管状体からなる覆い材で密接に覆う。こうして、ケーブルの外周が、防蟻成分を含有する覆い材で覆われることで、白蟻が、ケーブルの外周伝いに、地中埋設箱内から保護管内へと侵入するのを防ぐことができる。 Further, in the method for preventing ants in the pipe connection portion of the underground buried box according to the invention of claim 6, in the method for preventing ants according to claim 4 or 5, the ant-proofing tool is placed in the protective pipe and / and the above. Consists of a tape or tubular body containing an anti-termite component, at least on the outer surface side, at least at a position on the outer periphery of the cable that will overlap the anti-termite component before or after being inserted into the connector. Cover closely with a covering material. In this way, the outer circumference of the cable is covered with a covering material containing an anti-termite component, so that termites can be prevented from entering the protective tube from the underground buried box along the outer circumference of the cable.

また、請求項７に記載の発明に係る地中埋設箱の管接続部の防蟻方法は、請求項４ないし６のいずれか１項に記載の防蟻方法において、前記防蟻具は、その長手方向に、分割されて並ぶ、複数の防蟻具分割筒体からなり、その防蟻具を、前記保護管内または／および前記接続具内に挿入するにあたって、個々の前記防蟻具分割筒体を順次押し込んで挿入する。こうして、防蟻具が複数の防蟻具分割筒体からなることから、保護管または／および接続具における、防蟻具が配置される部分が、湾曲している場合であっても、その湾曲に、防蟻具を容易に追従させることができる。 Further, the ant-proofing method for the pipe connection portion of the underground buried box according to the invention according to claim 7 is the ant-proofing method according to any one of claims 4 to 6, wherein the ant-proofing tool is the same. It is composed of a plurality of anti-termite split cylinders that are divided and arranged in the longitudinal direction, and when the anti-termite is inserted into the protective tube and / and the connector, the individual anti-termite split cylinders are used. Sequentially push in to insert. In this way, since the anti-termite is composed of a plurality of anti-termite split cylinders, the portion of the protective tube or / and the connector on which the anti-termite is placed is curved even if it is curved. In addition, the ant-proofing device can be easily followed.

また、請求項８に記載の発明に係る地中埋設箱の管接続部用の防蟻装置は、地中埋設箱の側壁の貫通孔に、ケーブルを保護する保護管が直接または接続具を介して接続される管接続部の、前記地中埋設箱から前記保護管への白蟻の侵入を防ぐ防蟻装置である。この防蟻装置は、防蟻具とシール材とを備える。前記防蟻具は、筒状に形成されて、少なくとも内面側に防蟻成分を含有し、前記ケーブルが内部に挿入されるようにして、前記保護管または／および前記接続具の内側に配置されるものであって、長手方向に連続する切割部を有して、その切割部から前記ケーブルを内部に挿入可能に形成される。そして、前記シール材は、防蟻成分を含有し、前記防蟻具と、前記保護管または／および前記接続具との間を、シールするものである。 Further, in the termite-proof device for the pipe connection portion of the underground buried box according to the invention of claim 8, a protective pipe for protecting the cable is directly or via a connector in the through hole of the side wall of the underground buried box. It is an ant-proof device for preventing termites from invading the protective pipe from the underground box of the pipe connecting portion to be connected. This anti-termite device includes an anti-termite tool and a sealing material. The anti-termite is formed in a tubular shape, contains an anti-termite component at least on the inner surface side, and is arranged inside the protective tube and / and the connector so that the cable is inserted inside. It has a cut portion that is continuous in the longitudinal direction, and is formed so that the cable can be inserted into the inside from the cut portion. Then, the sealing material contains an anti-termite component and seals between the anti-termite tool and the protective tube and / and the connecting tool.

この防蟻装置によると、防蟻装置は、防蟻具とシール材とを備えている。そこで、筒状の防蟻具が、保護管または／および接続具の内側に配置され、さらに、防蟻具と、保護管または／および接続具との間が、シール材によりシールされる。そして、防蟻具は、少なくとも内面側に防蟻成分を含有し、シール材は、防蟻成分を含有している。このため、白蟻が、保護管あるいは接続具の内面伝いに、地中埋設箱内から保護管内へと侵入しようとしても、この防蟻具とシール材とで、その侵入を防ぐことができる。そして、防蟻具は、筒状に形成されており、保護管内に雨水や地下水が流れ込んだとしても、その雨水や地下水は、防蟻具内を通過して、地中埋設箱側へと流れ出ることができる。このため、ケーブルが水に長期間浸されることがない。 According to this anti-termite device, the anti-termite device includes an anti-termite device and a sealing material. Therefore, a tubular anti-termite is arranged inside the protective tube and / and the connector, and further, the anti-termite and the protective tube and / and the connector are sealed by a sealing material. The anti-termite tool contains an anti-termite component at least on the inner surface side, and the sealing material contains an anti-termite component. Therefore, even if termites try to invade the protective pipe from the underground buried box along the inner surface of the protective pipe or the connector, the termite-proofing tool and the sealing material can prevent the invasion. The ant-proofing tool is formed in a tubular shape, and even if rainwater or groundwater flows into the protective pipe, the rainwater or groundwater passes through the ant-proofing tool and flows out to the underground box side. be able to. Therefore, the cable is not immersed in water for a long period of time.

また、請求項９に記載の発明に係る地中埋設箱の管接続部用の防蟻装置は、請求項８に記載の防蟻装置において、覆い材を備え、その覆い材は、テープまたは管状体からなって、少なくとも外面側に防蟻成分を含有し、前記ケーブルの外周の、少なくとも前記防蟻具と重なる一部の位置を密接に覆うものである。こうして、ケーブルの外周が、防蟻成分を含有する覆い材で覆われることで、白蟻が、ケーブルの外周伝いに、地中埋設箱内から保護管内へと侵入するのを防ぐことができる。 Further, the anti-termite device for the pipe connection portion of the underground buried box according to the invention of claim 9 includes a covering material in the anti-termite device according to claim 8, and the covering material is tape or tubular. It is made of a body and contains an anti-termite component at least on the outer surface side, and closely covers at least a part of the outer periphery of the cable that overlaps with the anti-termite tool. In this way, the outer circumference of the cable is covered with a covering material containing an anti-termite component, so that termites can be prevented from entering the protective tube from the underground buried box along the outer circumference of the cable.

また、請求項１０に記載の発明に係る地中埋設箱の管接続部用の防蟻装置は、請求項８または９に記載の防蟻装置において、前記防蟻具は、その長手方向に、分割されて並ぶ、複数の防蟻具分割筒体からなる。こうして、防蟻具が複数の防蟻具分割筒体からなることから、保護管または／および接続具における、防蟻具が配置される部分が、湾曲している場合であっても、その湾曲に、防蟻具を容易に追従させることができる。 Further, the anti-termite device for the pipe connection portion of the underground buried box according to the invention according to claim 10 is the anti-termite device according to claim 8 or 9, wherein the anti-termite tool is in the longitudinal direction thereof. It consists of multiple ant-proof split cylinders that are divided and lined up. In this way, since the anti-termite is composed of a plurality of anti-termite split cylinders, the portion of the protective tube or / and the connector on which the anti-termite is placed is curved even if it is curved. In addition, the ant-proofing device can be easily followed.

また、請求項１１に記載の発明に係る地中埋設箱の管接続部用の防蟻具は、地中埋設箱の側壁の貫通孔に、ケーブルを保護する保護管が直接または接続具を介して接続される管接続部の、前記地中埋設箱から前記保護管への白蟻の侵入を防ぐ防蟻具である。この防蟻具は、筒状に形成されて、少なくとも内面側に防蟻成分を含有し、前記ケーブルが内部に挿入されるようにして、前記保護管または／および前記接続具の内側に配置されるものであって、長手方向に連続する切割部を有して、その切割部から、前記ケーブルを内部に挿入可能に形成される。また、前記防蟻具は、前記保護管または／および前記接続具の内径よりも大きい外径を有し、かつ、縮径可能に形成される。 Further, in the termite protection tool for the pipe connection portion of the underground buried box according to the invention of claim 11, a protective tube for protecting the cable is directly or via a connecting tool in the through hole of the side wall of the underground buried box. It is an anti-termite tool that prevents termites from invading the protective pipe from the underground box of the pipe connecting portion to be connected. The anti-termite is formed in a tubular shape, contains an anti-termite component at least on the inner surface side, and is arranged inside the protective tube and / and the connector so that the cable is inserted inside. It has a cut portion that is continuous in the longitudinal direction, and the cable is formed so as to be inserted into the inside from the cut portion. Further, the anti-termite tool has an outer diameter larger than the inner diameter of the protective tube and / and the connector, and is formed so that the diameter can be reduced.

この防蟻具によると、筒状の防蟻具が、保護管または／および接続具の内側に配置される。そして、防蟻具は、少なくとも内面側に防蟻成分を含有している。このため、保護管あるいは接続具の内面伝いに、地中埋設箱内から保護管内へと侵入しようとする白蟻が、この防蟻具の内面を通って侵入するのを防ぐことができる。また、別途、この防蟻具と、保護管または／および接続具との間を、防蟻成分を含有するシール材によりシールすれば、保護管あるいは接続具の内面伝いに、地中埋設箱内から保護管内へと侵入しようとする白蟻が、この防蟻具と、保護管あるいは接続具との間を通って、侵入するのを防ぐことができる。そして、防蟻具は、筒状に形成されており、保護管内に雨水や地下水が流れ込んだとしても、その雨水や地下水は、防蟻具内を通過して、地中埋設箱側へと流れ出ることができる。このため、ケーブルが水に長期間浸されることがない。また、防蟻具の外径が大きく、その防蟻具を縮径させて、保護管内または／および接続具内に挿入することで、防蟻具を保護管または／および接続具に密接させることができる。 According to this anti-termite, a tubular anti-termite is placed inside the protective tube and / and the connector. The anti-termite tool contains an anti-termite component at least on the inner surface side. Therefore, it is possible to prevent termites that try to invade the protective pipe from the underground box through the inner surface of the protective pipe or the connecting tool. In addition, if the termite-proofing tool and the protective tube or / and the connecting tool are separately sealed with a sealing material containing a termite-proofing component, the inside of the underground buried box can be carried along the inner surface of the protective tube or the connecting tool. It is possible to prevent termites that are trying to enter the protective tube from entering through between the termite preventive device and the protective tube or connector. The ant-proofing tool is formed in a tubular shape, and even if rainwater or groundwater flows into the protective pipe, the rainwater or groundwater passes through the ant-proofing tool and flows out to the underground box side. be able to. Therefore, the cable is not immersed in water for a long period of time. In addition, the outer diameter of the anti-termite is large, and the anti-termite is reduced in diameter and inserted into the protective tube and / and the connector to bring the anti-termite into close contact with the protective tube and / and the connector. Can be done.

また、請求項１２に記載の発明に係る地中埋設箱の管接続部用の防蟻具は、地中埋設箱の側壁の貫通孔に、ケーブルを保護する保護管が直接または接続具を介して接続される管接続部の、前記地中埋設箱から前記保護管への白蟻の侵入を防ぐ防蟻具である。この防蟻具は、筒状に形成されて、少なくとも内面側に防蟻成分を含有し、前記ケーブルが内部に挿入されるようにして、前記保護管または／および前記接続具の内側に配置されるものであって、長手方向に連続する切割部を有して、その切割部から、前記ケーブルを内部に挿入可能に形成される。また、前記防蟻具は、その長手方向に、分割されて並ぶ、複数の防蟻具分割筒体からなる。
この防蟻具によると、筒状の防蟻具が、保護管または／および接続具の内側に配置される。そして、防蟻具は、少なくとも内面側に防蟻成分を含有している。このため、保護管あるいは接続具の内面伝いに、地中埋設箱内から保護管内へと侵入しようとする白蟻が、この防蟻具の内面を通って侵入するのを防ぐことができる。また、別途、この防蟻具と、保護管または／および接続具との間を、防蟻成分を含有するシール材によりシールすれば、保護管あるいは接続具の内面伝いに、地中埋設箱内から保護管内へと侵入しようとする白蟻が、この防蟻具と、保護管あるいは接続具との間を通って、侵入するのを防ぐことができる。そして、防蟻具は、筒状に形成されており、保護管内に雨水や地下水が流れ込んだとしても、その雨水や地下水は、防蟻具内を通過して、地中埋設箱側へと流れ出ることができる。このため、ケーブルが水に長期間浸されることがない。また、防蟻具が複数の防蟻具分割筒体からなることから、保護管または／および接続具における、防蟻具が配置される部分が、湾曲している場合であっても、その湾曲に、防蟻具を容易に追従させることができる。 Further, in the termite protection tool for the pipe connection portion of the underground buried box according to the invention of claim 12 , a protective tube for protecting the cable is directly or via a connecting tool in the through hole of the side wall of the underground buried box. It is an anti-termite tool for preventing termites from invading the protective pipe from the underground box of the pipe connecting portion to be connected. The anti-termite is formed in a tubular shape, contains an anti-termite component at least on the inner surface side, and is arranged inside the protective tube and / and the connector so that the cable is inserted inside. It has a cut portion that is continuous in the longitudinal direction, and the cable is formed so that the cable can be inserted into the inside from the cut portion. Further, the anti-termite device is composed of a plurality of anti-termite device divided cylinders that are divided and arranged in the longitudinal direction thereof.
According to this anti-termite, a tubular anti-termite is placed inside the protective tube and / and the connector. The anti-termite tool contains an anti-termite component at least on the inner surface side. Therefore, it is possible to prevent termites that try to invade the protective pipe from the underground box through the inner surface of the protective pipe or the connecting tool. In addition, if the termite-proofing tool and the protective tube or / and the connecting tool are separately sealed with a sealing material containing a termite-proofing component, the inside of the underground buried box can be carried along the inner surface of the protective tube or the connecting tool. It is possible to prevent termites that are trying to enter the protective tube from entering through between the termite preventive device and the protective tube or connector. The ant-proofing tool is formed in a tubular shape, and even if rainwater or groundwater flows into the protective pipe, the rainwater or groundwater passes through the ant-proofing tool and flows out to the underground box side. be able to. Therefore, the cable is not immersed in water for a long period of time. Further, since the ant-proofing tool is composed of a plurality of ant-proofing tool divided cylinders, even if the portion of the protective tube or / and the connecting tool on which the ant-proofing tool is arranged is curved, the curvature thereof. In addition, the ant-proofing device can be easily followed.

また、請求項１３に記載の発明に係る地中埋設箱の管接続部用の防蟻具は、請求項１２に記載の防蟻具において、前記防蟻具分割筒体は、その防蟻具分割筒体の周壁を形成する筒本体と、その筒本体の少なくとも一方の端から内側に突出する突出部とを備える。これにより、保護管内または／および接続具内に、個々の防蟻具分割筒体を順次押し込んで挿入する際、隣り合う防蟻具分割筒体が互いにずれていても、それら防蟻具分割筒体を突出部で当接させることができる。このため、複数の防蟻具分割筒体を、保護管内または／および接続具内に的確に送り込むことができる。
また、請求項１４に記載の発明に係る地中埋設箱の管接続部用の防蟻具は、請求項１１ないし１３のいずれか１項に記載の防蟻具において、前記切割部を形成する周方向の両端は、当接または重合している。 Further, the ant-proofing tool for the pipe connection portion of the underground buried box according to the invention of claim 13 is the ant-proofing tool according to claim 12, and the ant-proofing tool split cylinder is the ant-proofing tool. A cylinder body forming a peripheral wall of the divided cylinder body and a protruding portion protruding inward from at least one end of the cylinder body are provided. As a result, when individual anti-termite split cylinders are sequentially pushed and inserted into the protective tube and / and the connector, even if the adjacent anti-termite split cylinders are displaced from each other, those anti-termite split cylinders are inserted. The body can be brought into contact with the protrusion. Therefore, a plurality of ant-proof tool split cylinders can be accurately fed into the protective tube and / and into the connector.
Further, the anti-termite tool for the pipe connection portion of the underground buried box according to the invention according to claim 14 forms the cut portion in the anti-termite tool according to any one of claims 11 to 13. Both ends in the circumferential direction are in contact or overlapped.

この発明に係る防蟻構造、防蟻方法および防蟻装置によれば、筒状の防蟻具とシール材とで、保護管あるいは接続具の内面伝いに、白蟻が地中埋設箱内から保護管内に侵入するのを防ぐことができ、かつ、防蟻具を筒状に形成することで、ケーブルが水に長期間浸されることがなく、ケーブルへの水の浸透を防ぐことができる。 According to the anti-termite structure, the anti-termite method and the anti-termite device according to the present invention, termites are protected from the underground buried box by the tubular anti-termite tool and the sealing material along the inner surface of the protective tube or the connecting tool. It is possible to prevent the cable from entering the pipe, and by forming the termite preventive device in a tubular shape, the cable is not immersed in water for a long period of time, and water can be prevented from penetrating into the cable.

また、この発明に係る防蟻具によれは、筒状の防蟻具にシール材を加えることで、保護管あるいは接続具の内面伝いに、白蟻が地中埋設箱内から保護管内に侵入するのを防ぐことができ、かつ、防蟻具を筒状に形成することで、ケーブルが水に長期間浸されることがなく、ケーブルへの水の浸透を防ぐことができる。 Further, according to the ant-proofing tool according to the present invention, by adding a sealing material to the tubular ant-proofing tool, termites invade the protective tube from the underground buried box along the inner surface of the protective tube or the connecting tool. By forming the termite-proofing device in a tubular shape, the cable is not soaked in water for a long period of time, and water can be prevented from permeating into the cable.

この発明の一実施の形態の、防蟻具を配置する前の地中埋設箱の管接続部の断面図である。It is sectional drawing of the pipe connection part of the underground burial box before arranging the ant-proofing tool of one Embodiment of this invention. 同じく、防蟻具を配置した後の防蟻構造の断面図である。Similarly, it is a cross-sectional view of the ant-proof structure after arranging the ant-proof tool. この発明の他の実施の形態の、防蟻構造の断面図である。It is sectional drawing of the ant-proof structure of another embodiment of this invention. この発明のさらに他の実施の形態の、防蟻具の断面図である。FIG. 5 is a cross-sectional view of an anti-termite tool according to still another embodiment of the present invention. 同じく、防蟻具分割筒体を示し、（ａ）は、断面図、（ｂ）は、Ａ矢視図である。Similarly, an ant-proof split cylinder is shown, (a) is a cross-sectional view, and (b) is a view taken along the arrow A.

以下、この発明に係る地中埋設箱の管接続部の、防蟻構造および防蟻方法、ならびに、地中埋設箱の管接続部用の、防蟻装置および防蟻具を実施するための形態を図面に基づいて説明する。 Hereinafter, a mode for carrying out an anti-termite structure and an anti-termite method for the pipe connection portion of the underground buried box according to the present invention, and an anti-termite device and an anti-termite tool for the pipe connection portion of the underground buried box. Will be described based on the drawings.

図１〜図２は、本発明の一実施の形態を示す。図中符号１は、地中埋設箱を示し、１ａは、その地中埋設箱１の側壁を示す。２は、ケーブルを示す。３は、そのケーブル２を保護する保護管を示す。４は、前記側壁１ａの貫通孔１ｂに、前記保護管３が直接または接続具を介して（図示実施の形態においては、直接）接続される管接続部を示す。５は、前記管接続部４の、前記地中埋設箱１から前記保護管３への白蟻の侵入を防ぐ防蟻構造を示し、６は、その侵入を防ぐ防蟻装置を示し、７は、その侵入を防ぐ防蟻具を示す。なお、図１は、防蟻具７を配置する前の地中埋設箱の管接続部の断面図であり、図２は、防蟻具７を配置した後の防蟻構造５の断面図である。 1 and 2 show an embodiment of the present invention. In the figure, reference numeral 1 indicates an underground box, and 1a indicates a side wall of the underground box 1. 2 indicates a cable. Reference numeral 3 denotes a protective tube that protects the cable 2. Reference numeral 4 denotes a pipe connecting portion in which the protective tube 3 is directly connected to the through hole 1b of the side wall 1a or via a connecting tool (in the illustrated embodiment, directly). 5 shows an anti-termite structure of the pipe connecting portion 4 to prevent termites from invading from the underground box 1 into the protective tube 3, 6 indicates an anti-termite device for preventing the invasion, and 7 indicates an anti-termite device. An anti-termite device is shown to prevent the invasion. Note that FIG. 1 is a cross-sectional view of the pipe connection portion of the underground buried box before arranging the ant-proof tool 7, and FIG. 2 is a cross-sectional view of the ant-proof structure 5 after arranging the ant-proof tool 7. is there.

ここで、防蟻構造５においては、保護管３内と地中埋設箱１内とに渡ってケーブル２が配設される。そして、筒状に形成されて、少なくとも内面側に防蟻成分を含有する防蟻具７が、内部にケーブル２が挿入されて、保護管３または／および接続具（図示実施の形態においては、保護管）の内側に配置される。このとき、防蟻具７の外周面の全体が、保護管３または／および接続具（図示実施の形態においては、保護管）の内周面に密接あるいは近接する。そして、防蟻具７と、保護管３または／および接続具（図示実施の形態においては、保護管）との間が、防蟻成分を含有するシール材８によりシールされる。さらに、図示実施の形態においては、ケーブル２の外周の、少なくとも防蟻具７と重なる一部の位置は、少なくとも外面側に防蟻成分を含有する、テープ９ａまたは管状体（図示実施の形態においては、テープ）からなる覆い材９で密接に覆われる。 Here, in the ant-proof structure 5, the cable 2 is arranged in the protective pipe 3 and in the underground box 1. Then, an anti-termite tool 7 which is formed in a tubular shape and contains an anti-termite component at least on the inner surface side is inserted, and a cable 2 is inserted inside, and a protective tube 3 and / and a connector (in the illustrated embodiment, the connector). It is placed inside the protective tube). At this time, the entire outer peripheral surface of the ant-proofing tool 7 is in close contact with or close to the inner peripheral surface of the protective tube 3 and / and the connecting tool (in the illustrated embodiment, the protective tube). Then, the ant-proof tool 7 and the protective tube 3 and / and the connector (protective tube in the illustrated embodiment) are sealed by the sealing material 8 containing the ant-proof component. Further, in the illustrated embodiment, at least a part of the outer periphery of the cable 2 overlapping the anti-termite tool 7 is a tape 9a or a tubular body (in the illustrated embodiment) containing an anti-termite component at least on the outer surface side. Is closely covered with a covering material 9 made of tape).

防蟻装置６は、前記防蟻具７と前記シール材８とを備える。すなわち、防蟻具７は、筒状に形成されて、少なくとも内面側に防蟻成分を含有し、ケーブル２が内部に挿入されるようにして、保護管３または／および接続具（図示実施の形態においては、保護管）の内側に配置されるものである。そして、シール材８は、防蟻成分を含有し、防蟻具７と、保護管３または／および接続具（図示実施の形態においては、保護管）との間を、シールするものである。また、この防蟻装置６においては、防蟻具７は、長手方向に連続する切割部７ａを有して、その切割部７ａからケーブル２を内部に挿入可能に形成されるが、防蟻構造５においても、防蟻具７は、同様の切割部７ａを有することができる。 The anti-termite device 6 includes the anti-termite tool 7 and the sealing material 8. That is, the anti-termite tool 7 is formed in a tubular shape, contains an anti-termite component at least on the inner surface side, and the cable 2 is inserted into the protective tube 3 and / and the connector (as shown in the illustration). In the form, it is arranged inside the protective tube). Then, the sealing material 8 contains an anti-termite component and seals between the anti-termite tool 7 and the protective tube 3 and / and the connecting tool (in the illustrated embodiment, the protective tube). Further, in the anti-termite device 6, the anti-termite tool 7 has a cutting portion 7a continuous in the longitudinal direction and is formed so that the cable 2 can be inserted into the inside from the cutting portion 7a. Also in No. 5, the ant-proof tool 7 can have a similar cutting portion 7a.

さらに、防蟻装置６は、前記覆い材９を備える。すなわち、覆い材９は、テープ９ａまたは管状体（図示実施の形態においては、テープ）からなって、少なくとも外面側に防蟻成分を含有し、ケーブル２の外周の、少なくとも防蟻具７と重なる一部の位置を密接に覆うものである。 Further, the ant-proof device 6 includes the covering material 9. That is, the covering material 9 is made of a tape 9a or a tubular body (tape in the illustrated embodiment), contains an anti-termite component at least on the outer surface side, and overlaps at least the anti-termite tool 7 on the outer periphery of the cable 2. It covers a part of the position closely.

防蟻具７は、前述の防蟻構造５とか防蟻装置６を構成するものであるが、この防蟻具７においては、切割部７ａを形成する周方向の両端は、当接または重合（図示実施の形態においては、当接）しているのがよい。また、この防蟻具７は、保護管３または／および接続具（図示実施の形態においては、保護管）の内径よりも大きい外径を有し、かつ、縮径可能に形成されるのが好ましい。ここで、縮径可能とは、切割部７ａが開いている場合には、その切割部７ａを閉じるようにして縮径することが可能であり、切割部７ａを形成する周方向の両端が当接している場合には、その両端を重合させるようにして縮径することが可能であり、切割部７ａを形成する周方向の両端が重合している場合には、その重合の量を増加させるようにして縮径することが可能であることを意味する。 The anti-termite tool 7 constitutes the above-mentioned anti-termite structure 5 or the anti-termite device 6, but in the anti-termite tool 7, both ends in the circumferential direction forming the cut portion 7a are abutted or polymerized ( In the illustrated embodiment, it is preferable that they are in contact with each other. Further, the anti-termite tool 7 has an outer diameter larger than the inner diameter of the protective tube 3 and / and the connecting tool (in the illustrated embodiment, the protective tube), and is formed so as to be able to reduce the diameter. preferable. Here, "reducable diameter" means that when the cut portion 7a is open, the diameter can be reduced by closing the cut portion 7a, and both ends in the circumferential direction forming the cut portion 7a are in contact with each other. When they are in contact with each other, the diameter can be reduced by polymerizing both ends thereof, and when both ends in the circumferential direction forming the cut portion 7a are polymerized, the amount of polymerization is increased. It means that it is possible to reduce the diameter in this way.

具体的には、地中埋設箱１は、ハンドホールとかマンホール等からなる。保護管３は、ケーブル２を保護する電線管であって、例えば、その長手方向に波が形成された波付管からなり、可撓性を備える。そこで、この保護管３が、地中埋設箱１の側壁１ａの貫通孔１ｂに直接（つまり、接続具を用いることなく）接続される。図示実施の形態においては、側壁１ａに保護管３が埋め込まれるように接続され、その埋め込まれる保護管３により、側壁１ａに貫通孔１ｂが形成される。もっとも、側壁１ａに予めあけられた貫通孔に保護管３を通すとともに、保護管３の外周側の隙間をモルタル等の充填材で閉じ、あるいは埋めるようにすることで、保護管３が、側壁１ａの貫通孔に直接接続されてもよい。 Specifically, the underground box 1 is composed of a hand hole, a manhole, or the like. The protective tube 3 is an electric wire tube that protects the cable 2, and is made of, for example, a corrugated tube in which waves are formed in the longitudinal direction thereof, and has flexibility. Therefore, the protective pipe 3 is directly connected (that is, without using a connector) to the through hole 1b of the side wall 1a of the underground buried box 1. In the illustrated embodiment, the protective tube 3 is connected so as to be embedded in the side wall 1a, and the through hole 1b is formed in the side wall 1a by the embedded protective tube 3. However, the protective tube 3 is formed by passing the protective tube 3 through a through hole formed in advance in the side wall 1a and closing or filling the gap on the outer peripheral side of the protective tube 3 with a filler such as mortar. It may be directly connected to the through hole of 1a.

また、図示実施の形態においては、保護管３の、地中埋設箱１内に開口する先端部分には、ベルマウス１０が挿入される。そして、そのベルマウス１０の外側に広がった部分と側壁１ａとの間が、エポキシ樹脂等からなるパテ１１で埋められる。 Further, in the illustrated embodiment, the bell mouth 10 is inserted into the tip portion of the protective tube 3 that opens into the underground box 1. Then, the space between the portion extending to the outside of the bell mouth 10 and the side wall 1a is filled with the putty 11 made of epoxy resin or the like.

そこで、防蟻具７は、例えば、保護管３内の、ベルマウス１０よりも奥に挿入されて、その防蟻具７の外周面の全体が、保護管３の内周面に密接あるいは近接する。この防蟻具７の長さは、例えば３０ｃｍ程度であるが、含有する防蟻成分の種類とか濃度により、この値は変動する。 Therefore, for example, the anti-termite tool 7 is inserted deeper than the bell mouth 10 in the protective tube 3, and the entire outer peripheral surface of the anti-termite tool 7 is in close contact with or close to the inner peripheral surface of the protective tube 3. To do. The length of the anti-termite tool 7 is, for example, about 30 cm, but this value varies depending on the type and concentration of the anti-termite component contained.

この防蟻具７は、筒の全体が、防蟻成分を含有する材料で形成されたり、複数層からなって、その内層が、防蟻成分を含有する材料で形成されたりする。ここで、防蟻成分は、例えば、クロチアニジン等のネオニコチノイド系化合物であったり、また、ピレスロイド系化合物、有機リン剤、カーバメート剤、ホウ素化合物、フッ素化合物であったりする。そこで、この防蟻成分が、例えば、マイクロカプセルに封入され、ベースとなる塩化ビニル樹脂とかポリエチレン樹脂等の合成樹脂材料に混練されて成形され、防蟻具７あるいは防蟻具７の内層が形成される。 The entire cylinder of the anti-termite tool 7 is formed of a material containing an anti-termite component, or is composed of a plurality of layers and the inner layer thereof is formed of a material containing an anti-termite component. Here, the anti-termite component may be, for example, a neonicotinoid compound such as clothianidin, or a pyrethroid compound, an organic phosphorus agent, a carbamate agent, a boron compound, or a fluorine compound. Therefore, this anti-termite component is encapsulated in microcapsules, for example, kneaded with a synthetic resin material such as vinyl chloride resin or polyethylene resin as a base, and molded to form an inner layer of the anti-termite tool 7 or the anti-termite tool 7. Will be done.

もっとも、防蟻具７が複数層からなる場合には、その内層は、その内層が面することとなる外側の層の内面に、防蟻成分を含有する塗布液が塗布されてその塗布液が硬化して被膜化されて形成されてもよい。ここで、塗布液は、例えば合成樹脂等に防蟻成分を混合したもの、詳細には、バインダー樹脂と揮発性溶剤と防蟻成分とを含むものであって、塗布後に、揮発性溶剤が揮発することで、塗布液は、硬化して被膜化される。 However, when the anti-termite tool 7 is composed of a plurality of layers, the inner layer thereof is coated with a coating liquid containing an anti-termite component on the inner surface of the outer layer to which the inner layer faces, and the coating liquid is applied. It may be cured and filmed to form. Here, the coating liquid is, for example, a mixture of a synthetic resin or the like and an anti-termite component, specifically, a binder resin, a volatile solvent, and an anti-termite component, and the volatile solvent volatilizes after coating. By doing so, the coating liquid is cured and formed into a film.

シール材８は、防蟻成分を含有した、例えばブチルゴム等のパテあるいは充填材からなる。そして、図示実施の形態においては、シール材８が、保護管３の内面の凹部に詰められて、防蟻具７と保護管３との間がシールされる。このシール材８に含有される防蟻成分は、防蟻具７における上述した防蟻成分と同様であり、例えば、クロチアニジン等のネオニコチノイド系化合物とか、ピレスロイド系化合物等からなる。 The sealing material 8 is made of a putty or a filler such as butyl rubber containing an anti-termite component. Then, in the illustrated embodiment, the sealing material 8 is packed in the recess on the inner surface of the protective tube 3 to seal between the anti-termite tool 7 and the protective tube 3. The anti-termite component contained in the sealing material 8 is the same as the anti-termite component described above in the anti-termite tool 7, and is composed of, for example, a neonicotinoid compound such as clothianidin, a pyrethroid compound, or the like.

覆い材９は、前述のように、テープ９ａまたは管状体からなり、少なくとも外面側に防蟻成分を含有する。この防蟻成分は、防蟻具７における上述した防蟻成分と同様であり、例えば、クロチアニジン等のネオニコチノイド系化合物とか、ピレスロイド系化合物等からなる。ここで、覆い材９がテープ９ａのときは、そのテープ９ａをケーブル２に巻き付ければよい。そして、覆い材９が管状体のときは、防蟻具７の場合と同様に、長手方向に連続する切割部を有するのが好ましく、その切割部から、ケーブル２を内部に挿入することができる。そして、図示実施の形態においては、覆い材９は、ケーブル２の外周を、地中埋設箱１の内側に突出する位置から防蟻具７と重なる位置に渡って覆うように設けられる。 As described above, the covering material 9 is made of a tape 9a or a tubular body, and contains an ant-proof component at least on the outer surface side. This anti-termite component is the same as the above-mentioned anti-termite component in the anti-termite tool 7, and is composed of, for example, a neonicotinoid compound such as clothianidin, a pyrethroid compound, or the like. Here, when the covering material 9 is a tape 9a, the tape 9a may be wound around the cable 2. When the covering material 9 is a tubular body, it is preferable to have a cut portion continuous in the longitudinal direction as in the case of the anti-termite tool 7, and the cable 2 can be inserted into the inside from the cut portion. .. Then, in the illustrated embodiment, the covering material 9 is provided so as to cover the outer periphery of the cable 2 from a position protruding inward of the underground box 1 to a position overlapping with the ant-proofing tool 7.

次に、地中埋設箱１の管接続部４の防蟻方法を説明する。この防蟻方法は、前記管接続部４の、地中埋設箱１から保護管３への白蟻の侵入を防ぐ防蟻方法であって、長手方向に連続する切割部７ａを有する前記防蟻具７に、その切割部７ａから、保護管３内と地中埋設箱１内とに渡って配設されたケーブル２を内部に挿入するようにして、その防蟻具７を、保護管３内または／および接続具内（図視実施の形態においては、保護管内）に挿入するとともに、防蟻具７と、保護管３または／および接続具（図示実施の形態においては、保護管）との間を、防蟻成分を含有するシール材８によりシールする。 Next, an ant-proofing method for the pipe connecting portion 4 of the underground box 1 will be described. This anti-termite method is an anti-termite method for preventing termites from invading the protective pipe 3 from the underground box 1 of the pipe connecting portion 4, and is the anti-termite tool having a continuous cutting portion 7a in the longitudinal direction. The termite-proofing tool 7 is inserted into the protective tube 3 by inserting the cable 2 disposed in the protective tube 3 and the underground box 1 from the cut portion 7a into the 7. Or / and inserted into the connector (in the protective tube in the illustrated embodiment), and the termite protection 7 and the protective tube 3 and / and the connector (protective tube in the illustrated embodiment). The space is sealed with a sealing material 8 containing an anti-termite component.

ここで、防蟻具７は、保護管３または／および接続具（図示実施の形態においては、保護管）の内径よりも大きい外径を有する。そこで、切割部７ａからケーブル２を防蟻具７内に挿入する際には、その切割部７ａを広げて挿入し、防蟻具７を保護管３内または／および接続具内（図示実施の形態においては、保護管内）に挿入する際は、その防蟻具７を縮経させて挿入する。 Here, the ant-proof tool 7 has an outer diameter larger than the inner diameter of the protective tube 3 and / and the connecting tool (in the illustrated embodiment, the protective tube). Therefore, when the cable 2 is inserted into the ant-proof tool 7 from the cut portion 7a, the ant-proof portion 7a is expanded and inserted, and the ant-proof tool 7 is inserted in the protective tube 3 and / and in the connector (shown in the figure). In the form, when inserting into the protective tube), the ant-proofing tool 7 is inserted by contraction.

また、この防蟻方法においては、防蟻具７を保護管３内または／および接続具内（図示実施の形態においては、保護管内）に挿入する前、または後に、ケーブル２の外周の、少なくとも防蟻具７と重なることとなる一部の位置を、前記覆い材９で密接に覆う。 Further, in this anti-termite method, at least the outer periphery of the cable 2 before or after the anti-termite tool 7 is inserted into the protective tube 3 and / and the connector (in the protective tube in the illustrated embodiment). The covering material 9 closely covers a part of the position where it overlaps with the anti-termite tool 7.

次いで、以上に示す防蟻構造５、防蟻方法、防蟻装置６および防蟻具７の作用効果について説明する。この防蟻構造５、防蟻方法および防蟻装置６によると、筒状の防蟻具７が、保護管３または／および接続具（図示実施の形態においては、保護管）の内側に配置され、さらに、防蟻具７と、保護管３または／および接続具（図示実施の形態においては、保護管）との間が、シール材８によりシールされる。そして、防蟻具７は、少なくとも内面側に防蟻成分を含有し、シール材８は、防蟻成分を含有している。このため、白蟻が、保護管３あるいは接続具（図示実施の形態においては、保護管）の内面伝いに、地中埋設箱１内から保護管３内へと侵入しようとしても、この防蟻具７とシール材８とで、その侵入を防ぐことができる。そして、防蟻具７は、筒状に形成されており、保護管３内に雨水や地下水が流れ込んだとしても、その雨水や地下水は、防蟻具７内を通過して、地中埋設箱１側へと流れ出ることができる。このため、ケーブル２が水に長期間浸されることがない。すなわち、筒状の防蟻具７とシール材８とで、保護管３あるいは接続具の内面伝いに、白蟻が地中埋設箱１内から保護管３内に侵入するのを防ぐことができ、かつ、防蟻具７を筒状に形成することで、ケーブル２が水に長期間浸されることがなく、ケーブル２への水の浸透を防ぐことができる。 Next, the effects of the anti-termite structure 5, the anti-termite method, the anti-termite device 6 and the anti-termite tool 7 shown above will be described. According to the anti-termite structure 5, the anti-termite method and the anti-termite device 6, the tubular anti-termite tool 7 is arranged inside the protective tube 3 and / and the connector (protective tube in the illustrated embodiment). Further, the ant-proof tool 7 and the protective tube 3 and / and the connector (protective tube in the illustrated embodiment) are sealed by the sealing material 8. The anti-termite tool 7 contains an anti-termite component at least on the inner surface side, and the sealing material 8 contains an anti-termite component. Therefore, even if termites try to invade the protective tube 3 from the underground box 1 along the inner surface of the protective tube 3 or the connector (in the illustrated embodiment, the protective tube), the termite preventive device is used. The intrusion can be prevented by the 7 and the sealing material 8. The ant-proofing tool 7 is formed in a tubular shape, and even if rainwater or groundwater flows into the protective pipe 3, the rainwater or groundwater passes through the ant-proofing tool 7 and is buried in the ground. It can flow out to one side. Therefore, the cable 2 is not immersed in water for a long period of time. That is, the tubular ant-proofing tool 7 and the sealing material 8 can prevent termites from entering the protective tube 3 from the underground buried box 1 along the inner surface of the protective tube 3 or the connecting tool. Moreover, by forming the termite-proofing tool 7 in a tubular shape, the cable 2 is not immersed in water for a long period of time, and the permeation of water into the cable 2 can be prevented.

また、防蟻具７によると、筒状の防蟻具７が、保護管３または／および接続具（図示実施の形態においては、保護管）の内側に配置される。そして、前述したように、防蟻具７は、少なくとも内面側に防蟻成分を含有している。このため、保護管３あるいは接続具（図示実施の形態においては、保護管）の内面伝いに、地中埋設箱１内から保護管３内へと侵入しようとする白蟻が、この防蟻具７の内面を通って侵入するのを防ぐことができる。そして、別途、この防蟻具７と、保護管３または／および接続具（図示実施の形態においては、保護管）との間を、防蟻成分を含有するシール材８によりシールすれば、保護管３あるいは接続具（図示実施の形態においては、保護管）の内面伝いに、地中埋設箱１内から保護管３内へと侵入しようとする白蟻が、この防蟻具７と、保護管３あるいは接続具（図示実施の形態においては、保護管）との間を通って、侵入するのを防ぐことができる。そして、防蟻具７は、筒状に形成されており、保護管３内に雨水や地下水が流れ込んだとしても、その雨水や地下水は、防蟻具７内を通過して、地中埋設箱１側へと流れ出ることができる。このため、ケーブル２が水に長期間浸されることがない。すなわち、筒状の防蟻具７にシール材８を加えることで、保護管３あるいは接続具（図示実施の形態においては、保護管）の内面伝いに、白蟻が地中埋設箱１内から保護管３内に侵入するのを防ぐことができ、かつ、防蟻具７を筒状に形成することで、ケーブル２が水に長期間浸されることがなく、ケーブル２への水の浸透を防ぐことができる。 Further, according to the anti-termite tool 7, the tubular anti-termite tool 7 is arranged inside the protective tube 3 and / and the connecting tool (in the illustrated embodiment, the protective tube). Then, as described above, the anti-termite tool 7 contains an anti-termite component at least on the inner surface side. For this reason, termites that try to invade the protection pipe 3 from the underground box 1 along the inner surface of the protection pipe 3 or the connector (protection pipe in the illustrated embodiment) are the termite prevention tool 7. It can be prevented from invading through the inner surface of the. Then, if the termite-proofing tool 7 and the protective tube 3 and / and the connecting tool (protective tube in the illustrated embodiment) are separately sealed with a sealing material 8 containing a termite-proofing component, protection is provided. Termites that try to invade the protection pipe 3 from the underground box 1 along the inner surface of the pipe 3 or the connector (protection pipe in the illustrated embodiment) are the termite prevention tool 7 and the protection pipe. It is possible to prevent the invasion by passing between the 3 or the connecting tool (in the illustrated embodiment, the protective tube). The ant-proofing tool 7 is formed in a tubular shape, and even if rainwater or groundwater flows into the protective pipe 3, the rainwater or groundwater passes through the ant-proofing tool 7 and is buried in the ground. It can flow out to one side. Therefore, the cable 2 is not immersed in water for a long period of time. That is, by adding the sealing material 8 to the tubular ant-proofing tool 7, termites are protected from the underground buried box 1 along the inner surface of the protective tube 3 or the connecting tool (protective tube in the illustrated embodiment). By preventing the cable 2 from invading the pipe 3 and forming the termite preventive tool 7 in a tubular shape, the cable 2 is not immersed in water for a long period of time, and water permeates into the cable 2. Can be prevented.

ところで、防蟻具７は、保護管３または／および接続具（図示実施の形態においては、保護管）の内径よりも大きい外径を有し、また、縮経可能に形成される。そこで、防蟻具７を保護管３内または／および接続具内（図示実施の形態においては、保護管内）に挿入する際は、その防蟻具７を縮径させて挿入する。こうして、防蟻具７の外径が大きく、その防蟻具７を縮径させて、保護管３内または／および接続具内（図示実施の形態においては、保護管内）に挿入することで、防蟻具７を保護管３または／および接続具（図示実施の形態においては、保護管）に密接させることができ、それら防蟻具７と、保護管３または／および接続具（図示実施の形態においては、保護管）との間のシールを、容易に行うことができる。 By the way, the ant-proof tool 7 has an outer diameter larger than the inner diameter of the protective tube 3 and / and the connecting tool (in the illustrated embodiment, the protective tube), and is formed so as to be warpable. Therefore, when the anti-termite tool 7 is inserted into the protective tube 3 and / and the inside of the connecting tool (in the protective tube in the illustrated embodiment), the anti-termite tool 7 is inserted with the diameter reduced. In this way, the outer diameter of the ant-proof tool 7 is large, and the ant-proof tool 7 is reduced in diameter and inserted into the protective tube 3 and / and the connector (in the illustrated embodiment, the protective tube). The anti-termite 7 can be brought into close contact with the protective tube 3 and / and the connector (protective tube in the illustrated embodiment), and the anti-termite 7 and the protective tube 3 and / and the connector (shown in the illustrated embodiment). In the form, the seal between the protective tube) can be easily performed.

また、ケーブル２の外周は、少なくとも外面側に防蟻成分を含有する覆い材９で密接に覆われる。こうして、ケーブル２の外周が、防蟻成分を含有する覆い材９で覆われることで、白蟻が、ケーブル２の外周伝いに、地中埋設箱１内から保護管３内へと侵入するのを防ぐことができる。 Further, the outer circumference of the cable 2 is closely covered with a covering material 9 containing an anti-termite component at least on the outer surface side. In this way, the outer circumference of the cable 2 is covered with the covering material 9 containing the anti-termite component, so that termites can be prevented from entering the protective tube 3 from the inside of the underground buried box 1 along the outer circumference of the cable 2. Can be prevented.

なお、本発明は、上述した実施の形態に限定されるわけではなく、その他種々の変更が可能である。例えば、保護管３は、波付管でなくとも、平滑管であってもよい。 The present invention is not limited to the above-described embodiment, and various other modifications can be made. For example, the protective tube 3 may be a smooth tube instead of a corrugated tube.

また、保護管３は、地中埋設箱１の側壁１ａの貫通孔１ｂに直接接続されるが、図３に示すように、接続具１２を介して接続されてもよい。すなわち、側壁１ａの貫通孔１ｂに、筒状の接続具１２の一端側が接続され、その接続具１２の他端側に、保護管３が接続されることで、保護管３が、貫通孔１ｂに接続具１２を介して接続されてもよい。また、この図においては、防蟻具７は、保護管３および接続具１２の内側に配置され、そして、防蟻具７と接続具１２との間のみが、シール材８によりシールされているが、シール材８によりシールされるのは、防蟻具７と保護管３との間のみであっても、防蟻具７と、保護管３および接続具１２との間であってもよい。また、防蟻具７は、保護管３の内側のみに配置されても、接続具１２の内側のみに配置されても構わない。 Further, the protective pipe 3 is directly connected to the through hole 1b of the side wall 1a of the underground buried box 1, but may be connected via the connecting tool 12 as shown in FIG. That is, one end side of the tubular connecting tool 12 is connected to the through hole 1b of the side wall 1a, and the protective tube 3 is connected to the other end side of the connecting tool 12, so that the protective tube 3 is connected to the through hole 1b. May be connected via a connector 12. Further, in this figure, the anti-termite tool 7 is arranged inside the protective tube 3 and the connecting tool 12, and only between the anti-termite tool 7 and the connecting tool 12 is sealed by the sealing material 8. However, the sealing material 8 may be sealed only between the anti-termite tool 7 and the protective tube 3, or between the anti-termite tool 7 and the protective tube 3 and the connecting tool 12. .. Further, the anti-termite tool 7 may be arranged only inside the protective tube 3 or only inside the connector 12.

また、防蟻具７は、地中埋設箱１の内側に突出することなく、保護管３または／および接続具１２内に配置されているが、地中埋設箱１の内側に一部が突出しても構わない。 Further, the ant-proof tool 7 is arranged in the protective pipe 3 and / and the connector 12 without protruding inside the underground box 1, but a part of the ant-proof tool 7 protrudes inside the underground box 1. It doesn't matter.

また、防蟻具７は、一体に形成されていなくとも、図４および図５に示すように、その長手方向に、分割されて並ぶ、複数の防蟻具分割筒体７０１、７０１からなっていても構わない。ここで、図示実施の形態においては、防蟻具分割筒体７０１は、その防蟻具分割筒体７０１の周壁を形成する筒本体７ｂと、その筒本体７ｂの少なくとも一方の端（つまり、長さ方向の一方の端）から内側に突出する突出部７ｃとを備えている。詳細には、筒本体７ｂは、その長さ７ｘが、外周の直径７ｙよりも小（詳しくは、外周の半径７ｚよりも小）となっている。そして、突出部７ｃは、筒本体７ｂの一方の端に、二つ設けられ、それら突出部７ｃ、７ｃは、径方向に対向位置する。もっとも、突出部７ｃの数や位置は特に限定されず、例えば、筒本体７ｂの全周に渡って連続するように設けられてもよく、また、筒本体７ｂの他方の端に設けられたり、筒本体７ｂの両方の端に設けられたりしてもよい。ここで、防蟻方法にあっては、防蟻具７を、保護管３内または／および接続具１２内に挿入するにあたって、個々の防蟻具分割筒体７０１を順次押し込んで挿入する。 Further, even if the anti-termite 7 is not integrally formed, as shown in FIGS. 4 and 5, the anti-termite 7 is composed of a plurality of anti-termite divided cylinders 701 and 701 that are divided and arranged in the longitudinal direction thereof. It doesn't matter. Here, in the illustrated embodiment, the anti-termite split cylinder 701 has a cylinder body 7b forming a peripheral wall of the anti-termite split cylinder 701 and at least one end (that is, a length) of the cylinder body 7b. It is provided with a protruding portion 7c protruding inward from one end in the radial direction). Specifically, the length 7x of the cylinder body 7b is smaller than the outer diameter 7y (specifically, smaller than the outer radius 7z). Two projecting portions 7c are provided at one end of the cylinder body 7b, and the projecting portions 7c and 7c are positioned so as to face each other in the radial direction. However, the number and position of the protruding portions 7c are not particularly limited, and for example, they may be provided so as to be continuous over the entire circumference of the cylinder body 7b, or may be provided at the other end of the cylinder body 7b. It may be provided at both ends of the cylinder body 7b. Here, in the anti-termite method, when the anti-termite tool 7 is inserted into the protective tube 3 and / and the connector 12, the individual anti-termite tool dividing cylinders 701 are sequentially pushed in and inserted.

こうして、防蟻具７が複数の防蟻具分割筒体７０１、７０１からなることから、保護管３または／および接続具１２における、防蟻具７が配置される部分が、湾曲している場合であっても、その湾曲に、防蟻具７を容易に追従させることができる。そして、防蟻具７が突出部７ｃを備えることで、保護管３内または／および接続具１２内に、個々の防蟻具分割筒体７０１を順次押し込んで挿入する際、隣り合う防蟻具分割筒体７０１、７０１が互いにずれていても、それら防蟻具分割筒体７０１、７０１を突出部７ｃで当接させることができる。このため、複数の防蟻具分割筒体７０１、７０１を、保護管３内または／および接続具１２内に的確に送り込むことができる。もっとも、この突出部７ｃは、特に必要としないのであれば、なくてもよい。 In this way, since the anti-termite 7 is composed of a plurality of anti-termite split cylinders 701 and 701, when the portion of the protective tube 3 and / and the connector 12 on which the anti-termite 7 is arranged is curved. Even so, the ant-proofing tool 7 can be easily made to follow the curvature. Then, when the anti-termite 7 is provided with the projecting portion 7c, when the individual anti-termite split cylinders 701 are sequentially pushed and inserted into the protective tube 3 and / and the connector 12, the adjacent anti-termites are adjacent to each other. Even if the split cylinders 701 and 701 are displaced from each other, the anti-termite split cylinders 701 and 701 can be brought into contact with each other by the protruding portion 7c. Therefore, the plurality of ant-proof tool split cylinders 701 and 701 can be accurately fed into the protective tube 3 and / and the connector 12. However, this protrusion 7c may be omitted if it is not particularly required.

また、防蟻具７は、保護管３または／および接続具１２の内側に配置される前においては、切割部７ａを形成する周方向の両端は、開いていても構わないが、配置された後は、防蟻具７が縮径されて、その両端は当接または重合するのがよい。 Further, before the ant-proof tool 7 is arranged inside the protective tube 3 and / and the connector 12, both ends in the circumferential direction forming the cut portion 7a may be open, but they are arranged. After that, the diameter of the anti-termite tool 7 is reduced, and both ends thereof may be brought into contact with each other or polymerized.

また、防蟻具７は、切割部７ａを有するが、ケーブル２を防蟻具７の端側の開口から挿入可能な状況にある場合には、その切割部７ａはなくともよい。 Further, although the anti-termite tool 7 has a cut portion 7a, the cut portion 7a may not be provided if the cable 2 can be inserted through the opening on the end side of the anti-termite tool 7.

また、覆い材９は、テープ９ａまたは管状体からならなくとも、例えば、防蟻成分を含有するコート液がケーブル２の外周に塗布されて硬化したものでもよい。 Further, the covering material 9 may not be made of a tape 9a or a tubular body, but may be, for example, a coating liquid containing an anti-termite component applied to the outer periphery of the cable 2 and cured.

また、ケーブル２は、複数本の絶縁電線からなり、それら複数本の絶縁電線が、共通の保護外被覆で被覆されることなく露出した状態で形成されてもよい（つまり、複数本の、例えば、３本の絶縁電線を撚り合わせたトリプレックス形ケーブル等であってもよい）。 Further, the cable 2 is composed of a plurality of insulated wires, and the plurality of insulated wires may be formed in an exposed state without being covered with a common protective outer coating (that is, a plurality of insulated wires, for example, It may be a triplex type cable in which three insulated wires are twisted together).

１地中埋設箱
１ａ側壁
１ｂ貫通孔
２ケーブル
３保護管
４管接続部
５防蟻構造
６防蟻装置
７防蟻具
７ａ切割部
７ｂ筒本体
７ｃ突出部
７０１防蟻具分割筒体
８シール材
９覆い材
１２接続具 1 Underground box 1a Side wall 1b Through hole 2 Cable 3 Protective pipe 4 Pipe connection part 5 Anti-termite structure 6 Anti-termite device 7 Anti-termite tool 7a Cutting part 7b Cylinder body 7c Protruding part 701 Anti-termite tool split cylinder 8 Sealing material 9 Covering material 12 Connector

Claims

Preventing termites from entering the protective pipe from the underground box at the pipe connection where the protective pipe that protects the cable is connected directly or via a connector to the through hole in the side wall of the underground box. It has an ant structure
The cable is arranged across the protective tube and the underground box.
An anti-termite tool formed in a tubular shape and containing an anti-termite component at least on the inner surface side is arranged inside the protective tube and / and the connection tool with the cable inserted inside.
An anti-termite structure of a pipe connection portion of an underground box in which the anti-termite tool and the protective tube and / and the connection tool are sealed with a sealing material containing an anti-termite component.

The first aspect of the cable, wherein at least a part of the outer circumference of the cable that overlaps with the anti-termite device is closely covered with a covering material made of a tape or a tubular body containing an anti-termite component at least on the outer surface side. Anti-termite structure at the pipe connection of the underground box.

The ant-proof structure of a pipe connection portion of an underground box according to claim 1 or 2, wherein the ant-proof tool is composed of a plurality of ant-proof tool divided cylinders that are divided and arranged in the longitudinal direction thereof.

Preventing termites from entering the protective pipe from the underground box at the pipe connection where the protective pipe that protects the cable is connected directly or via a connector to the through hole in the side wall of the underground box. It ’s an ant method,
An anti-termite tool formed in a tubular shape, containing an anti-termite component at least on the inner surface side, and having a continuous cutting portion in the longitudinal direction, extends from the cutting portion to the inside of the protective tube and the inside of the underground buried box. The arranged cable is inserted into the inside, and the anti-termite is inserted into the protective tube and / and the connector, and the anti-termite and the protective tube and / and the above are inserted. A method of preventing ants at the pipe connection part of an underground box, which seals the connection with the connector with a sealing material containing an ant-proof component.

The anti-termite has an outer diameter larger than the inner diameter of the protective tube and / and the connector, and when the cable is inserted from the cut portion, the cut portion is widened and inserted. The method for preventing ants in a pipe connection portion of an underground buried box according to claim 4, wherein when the ant-proofing tool is inserted into the protective tube and / and the connecting tool, the ant-proofing tool is inserted with a reduced diameter. ..

Before or after inserting the anti-termite into the protective tube and / and the connector, at least a part of the outer circumference of the cable that will overlap the anti-termite is prevented from the outer surface side. The method for preventing ants at a pipe connection portion of an underground box according to claim 4 or 5, wherein the covering material made of a tape or a tubular body containing an ant component is closely covered.

The ant-proof device is composed of a plurality of ant-proof device divided cylinders that are divided and arranged in the longitudinal direction thereof, and the ant-proof device is individually inserted into the protective tube and / and the connector. The method for preventing ants at a pipe connection portion of an underground buried box according to any one of claims 4 to 6, wherein the ant-proofing tool split cylinders are sequentially pushed in and inserted.

Preventing termites from entering the protective pipe from the underground box at the pipe connection where the protective pipe that protects the cable is connected directly or via a connector to the through hole in the side wall of the underground box. It ’s an ant device,
Equipped with anti-termite and sealing material,
The anti-termite is formed in a tubular shape, contains an anti-termite component at least on the inner surface side, and is arranged inside the protective tube and / and the connector so that the cable is inserted inside. It has a cutting portion that is continuous in the longitudinal direction, and is formed so that the cable can be inserted into the inside from the cutting portion.
The sealing material contains an anti-termite component and seals between the anti-termite tool and the protective tube and / and the connector, and is an anti-termite for a pipe connection portion of an underground buried box. apparatus.

It comprises a covering material, which is composed of a tape or a tubular body, contains an anti-termite component at least on the outer surface side, and closely covers at least a part of the outer circumference of the cable that overlaps the anti-termite device. The ant-proof device for the pipe connection portion of the underground buried box according to claim 8.

The anti-termite device for a pipe connection portion of an underground box according to claim 8 or 9, wherein the anti-termite device is composed of a plurality of anti-termite device divided cylinders that are divided and arranged in the longitudinal direction thereof.

Preventing termites from entering the protective pipe from the underground box at the pipe connection where the protective pipe that protects the cable is connected directly or via a connector to the through hole in the side wall of the underground box. It ’s an ant tool,
It is formed in a tubular shape, contains an anti-termite component at least on the inner surface side, and is arranged inside the protective tube and / and the connector so that the cable is inserted inside. It has a cut portion that is continuous in the longitudinal direction, and is formed so that the cable can be inserted into the inside from the cut portion .
An anti-termite tool for a pipe connection portion of an underground box , which has an outer diameter larger than the inner diameter of the protective tube and / and the connector and is formed so as to be able to reduce the diameter .

Preventing termites from entering the protective pipe from the underground box at the pipe connection where the protective pipe that protects the cable is connected directly or via a connector to the through hole in the side wall of the underground box. It ’s an ant tool,
It is formed in a tubular shape, contains an anti-termite component at least on the inner surface side, and is arranged inside the protective tube and / and the connector so that the cable is inserted inside. It has a cut portion that is continuous in the longitudinal direction, and is formed so that the cable can be inserted into the inside from the cut portion.
The ant-proofing tool is a ant-proofing tool for a pipe connection portion of an underground box, which is composed of a plurality of ant-proofing tool divided cylinders that are divided and lined up in the longitudinal direction thereof .

12. The ant-proof split cylinder according to claim 12 , further comprising a cylinder body forming a peripheral wall of the ant-proof split cylinder and a protruding portion protruding inward from at least one end of the cylinder body . Anti-termite for the pipe connection of underground boxes.

The anti-termite tool for a pipe connection portion of an underground box according to any one of claims 11 to 13, wherein both ends in the circumferential direction forming the cut portion are abutted or polymerized .