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A platform for research: civil engineering, architecture and urbanism
MOUNTING STRUCTURE OF ANTENNA TO IRON LID
To provide a mounting structure of an antenna to an iron lid, in which a mobile phone antenna can easily and firmly be attached to a through hole dedicated to the antenna formed in the iron lid.SOLUTION: The mounting structure of an antenna to an iron lid includes: an antenna-specific through hole 1 formed on an iron lid 3 of a manhole 2 and having a lower thin tapered step 1a at a top; and a lower thin tapered engaging portion 4c, inserted into the through hole 1, engaged with the step 1a at the top, and is composed of a shaft 4 having an external thread 4d at its lower part and an opening 4e at its side; and fixing means 5 including a washer 6 and a nut 7 for fixing the shaft 4 inserted in the through hole 1 to the iron lid 3. A recessed portion 4a is formed on an upper surface of the shaft 4. An external communication antenna 8 is accommodated in the recessed portion 4a. The antenna 8 is connected to a transmission cable 13 connected to a monitoring device installed in the manhole 2 through the shaft 4. The washer 6 is formed with a mounting port 6a communicating with the opening 4e. A protective pipe 9 of a transmission cable 12 is attached to the mounting port 6a.SELECTED DRAWING: Figure 1
【課題】鉄蓋に形成したアンテナ専用の貫通孔に容易かつ強固に携帯電話用アンテナを取り付けることができる、鉄蓋へのアンテナの取付け構造を提供する。【解決手段】マンホール２の鉄蓋３に形成された、上部に下細りテーパー状の段部１ａを有するアンテナ専用の貫通孔１と、貫通孔１内に挿入される、上部に段部１ａと係合する下細りテーパー状の係合部４ｃを有し、下部に雄ねじ４ｄが切られ、側部に開口４ｅが形成されたシャフト４と、貫通孔１内に挿入されたシャフト４を鉄蓋３に固定する、座金６とナット７とからなる固定手段５とからなり、シャフト４の上面には、凹陥部４ａが形成され、凹陥部４ａ内には、外部通信用アンテナ８が収容され、アンテナ８には、シャフト４を通りマンホール２内に設置された監視装置に接続される伝送ケーブル１３が接続され、座金６には、開口４ｅと連通する取付け口６ａが形成され、取付け口６ａには、伝送ケーブル１２の保護管９が取り付けられる。【選択図】図１
MOUNTING STRUCTURE OF ANTENNA TO IRON LID
To provide a mounting structure of an antenna to an iron lid, in which a mobile phone antenna can easily and firmly be attached to a through hole dedicated to the antenna formed in the iron lid.SOLUTION: The mounting structure of an antenna to an iron lid includes: an antenna-specific through hole 1 formed on an iron lid 3 of a manhole 2 and having a lower thin tapered step 1a at a top; and a lower thin tapered engaging portion 4c, inserted into the through hole 1, engaged with the step 1a at the top, and is composed of a shaft 4 having an external thread 4d at its lower part and an opening 4e at its side; and fixing means 5 including a washer 6 and a nut 7 for fixing the shaft 4 inserted in the through hole 1 to the iron lid 3. A recessed portion 4a is formed on an upper surface of the shaft 4. An external communication antenna 8 is accommodated in the recessed portion 4a. The antenna 8 is connected to a transmission cable 13 connected to a monitoring device installed in the manhole 2 through the shaft 4. The washer 6 is formed with a mounting port 6a communicating with the opening 4e. A protective pipe 9 of a transmission cable 12 is attached to the mounting port 6a.SELECTED DRAWING: Figure 1
【課題】鉄蓋に形成したアンテナ専用の貫通孔に容易かつ強固に携帯電話用アンテナを取り付けることができる、鉄蓋へのアンテナの取付け構造を提供する。【解決手段】マンホール２の鉄蓋３に形成された、上部に下細りテーパー状の段部１ａを有するアンテナ専用の貫通孔１と、貫通孔１内に挿入される、上部に段部１ａと係合する下細りテーパー状の係合部４ｃを有し、下部に雄ねじ４ｄが切られ、側部に開口４ｅが形成されたシャフト４と、貫通孔１内に挿入されたシャフト４を鉄蓋３に固定する、座金６とナット７とからなる固定手段５とからなり、シャフト４の上面には、凹陥部４ａが形成され、凹陥部４ａ内には、外部通信用アンテナ８が収容され、アンテナ８には、シャフト４を通りマンホール２内に設置された監視装置に接続される伝送ケーブル１３が接続され、座金６には、開口４ｅと連通する取付け口６ａが形成され、取付け口６ａには、伝送ケーブル１２の保護管９が取り付けられる。【選択図】図１
MOUNTING STRUCTURE OF ANTENNA TO IRON LID
鉄蓋へのアンテナの取付け構造
SHIMIZU TAKASHI (author) / MATSUSHIMA SEIJI (author) / HATA NOBUYUKI (author) / ONUKI AKIHIKO (author) / KONNO MINORU (author) / KANEKO TSUTOMU (author)
2019-05-30
Patent
Electronic Resource
Japanese
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