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A platform for research: civil engineering, architecture and urbanism
CLOSING TOOL FOR ENGAGING HOLE OF COVER OPENING TOOL IN MANHOLE COVER
To provide a closing tool which can be generally applied to a plurality of different kinds of manhole covers having different thicknesses of a hole edge part of an engaging hole, and facilitates attachment/detachment operation and does not hinder walking.SOLUTION: A closing tool 1 includes: a body 2 having an umbrella part 4 and a cylinder part 5; and a lock mechanism 3 incorporated in the cylinder part 5. The body 2 is inserted into an engaging hole 102, and closes the engaging hole. The lock mechanism 3 includes a rotor 7, a weak pressure spring 8, a lock member 9, and a strong pressure spring 10. The rotor 7 is arranged at a lower unlock position and the lock member 9 is arranged at a lower non-lock position, the rotor and the lock member are mounted on the engaging hole 102. By rotating the rotor 7 at 90° to a lock position, the rotor 7 is raised together with the lock member 9 by a spring, and the lock member 9 is arranged at a lock position. At the lock position, a lock piece 20 prevents pulling out of the closing tool 1 from the engaging hole 102. By rotating only the rotor 7 at 60°, a guide projection 13 reaches a fixed end 17e of a guide groove 17, and is vertically fixed thereto.SELECTED DRAWING: Figure 1
【課題】係合孔の孔縁部の厚さの異なる数種のマンホール蓋に汎用的に適用でき、着脱操作が容易で歩行の障害とならない閉塞具を提供する。【解決手段】閉塞具１は、傘部４とシリンダ部５を具備する本体２と、シリンダ部５に組み込まれるロック機構３とを具備する。本体２は、係合孔１０２に挿入され、これを閉塞する。ロック機構３は、ロータ７、弱圧ばね８、ロック部材９、強圧ばね１０を具備する。ロータ７を下位の解錠位置、ロック部材９を下位の非ロック位置に配置して係合孔１０２に装着する。ロータ７を施錠位置へ９０°回転させることにより、ばねでロック部材９と共に上昇させ、ロック部材９をロック位置に配置する。ロック位置でロック片２０が閉塞具１を係合孔１０２から抜け止めする。さらにロータ７のみ６０°回転させると、ガイド突起１３がガイド溝１７の固定端１７ｅに至り、上下に固定される。【選択図】図１
CLOSING TOOL FOR ENGAGING HOLE OF COVER OPENING TOOL IN MANHOLE COVER
To provide a closing tool which can be generally applied to a plurality of different kinds of manhole covers having different thicknesses of a hole edge part of an engaging hole, and facilitates attachment/detachment operation and does not hinder walking.SOLUTION: A closing tool 1 includes: a body 2 having an umbrella part 4 and a cylinder part 5; and a lock mechanism 3 incorporated in the cylinder part 5. The body 2 is inserted into an engaging hole 102, and closes the engaging hole. The lock mechanism 3 includes a rotor 7, a weak pressure spring 8, a lock member 9, and a strong pressure spring 10. The rotor 7 is arranged at a lower unlock position and the lock member 9 is arranged at a lower non-lock position, the rotor and the lock member are mounted on the engaging hole 102. By rotating the rotor 7 at 90° to a lock position, the rotor 7 is raised together with the lock member 9 by a spring, and the lock member 9 is arranged at a lock position. At the lock position, a lock piece 20 prevents pulling out of the closing tool 1 from the engaging hole 102. By rotating only the rotor 7 at 60°, a guide projection 13 reaches a fixed end 17e of a guide groove 17, and is vertically fixed thereto.SELECTED DRAWING: Figure 1
【課題】係合孔の孔縁部の厚さの異なる数種のマンホール蓋に汎用的に適用でき、着脱操作が容易で歩行の障害とならない閉塞具を提供する。【解決手段】閉塞具１は、傘部４とシリンダ部５を具備する本体２と、シリンダ部５に組み込まれるロック機構３とを具備する。本体２は、係合孔１０２に挿入され、これを閉塞する。ロック機構３は、ロータ７、弱圧ばね８、ロック部材９、強圧ばね１０を具備する。ロータ７を下位の解錠位置、ロック部材９を下位の非ロック位置に配置して係合孔１０２に装着する。ロータ７を施錠位置へ９０°回転させることにより、ばねでロック部材９と共に上昇させ、ロック部材９をロック位置に配置する。ロック位置でロック片２０が閉塞具１を係合孔１０２から抜け止めする。さらにロータ７のみ６０°回転させると、ガイド突起１３がガイド溝１７の固定端１７ｅに至り、上下に固定される。【選択図】図１
CLOSING TOOL FOR ENGAGING HOLE OF COVER OPENING TOOL IN MANHOLE COVER
マンホール蓋の開蓋操作具係合孔の閉塞具
MIZUGUCHI KEIICHI (author)
2023-04-20
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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