JPH0473045U

JPH0473045U -

Info

Publication number: JPH0473045U
Application number: JP11465690U
Authority: JP
Priority date: 1990-10-31
Filing date: 1990-10-31
Publication date: 1992-06-26
Anticipated expiration: 2005-10-31
Also published as: JP2520518Y2

Description

[Brief explanation of drawings]

第１図は、この考案の第１の、マンホール用鉄
蓋の施錠装置の一実施態様を示す概略斜視図、第
２図は、第１図のＡ′方向視図、第３図Ａは、同
施錠装置のロツク状態のときの回転軸を示す断面
図、同Ｂは、同施錠装置のロツク解除状態のとき
の回転軸を示す断面図、同図Ｃは、同施錠装置に
おいて、鉄蓋を閉めるときの回転軸を示す断面図
、第４図は、この考案の第２の、マンホール用鉄
蓋の施錠装置の一実施態様を示す概略斜視図、第
５図は、従来のマンホール用鉄蓋の施錠装置を示
す断面図、第６図は、第５図のＡ―Ａ線断面図で
ある。図面において、１……鉄蓋、２……フツク、３……回転軸、４
……レバー、５……手鉤、６……受け枠、７……
軸受、８……長溝、９……回転軸、１０……施錠
鉤本体、１１……レバー、１２……ストツパー、
１３……挿入孔、１４……レバー。 FIG. 1 is a schematic perspective view showing an embodiment of the first locking device for a manhole iron cover of this invention, FIG. 2 is a view taken in direction A' in FIG. 1, and FIG. Figure B is a cross-sectional view showing the rotating shaft of the locking device in the unlocked state. Figure C is a cross-sectional view showing the rotating shaft of the locking device in the unlocked state. FIG. 4 is a schematic perspective view showing an embodiment of the locking device for a manhole iron cover according to the second invention, and FIG. 5 is a cross-sectional view showing the rotation axis when closing the iron manhole cover. FIG. 6 is a sectional view taken along line AA in FIG. 5. In the drawing, 1... Iron lid, 2... Hook, 3... Rotating shaft, 4
...Lever, 5...Hook, 6...Receptacle, 7...
Bearing, 8... Long groove, 9... Rotating shaft, 10... Locking hook body, 11... Lever, 12... Stopper,
13...Insertion hole, 14...Lever.

Claims

[Claims for Utility Model Registration] (1) A pair of bearings fixed oppositely to each other on the back side of an iron manhole cover, a rotating shaft attached to the bearings and having a pawl formed in the axial direction; A locking hook body fixed to the lower part of the rotating shaft, a lever fixed to the rotating shaft at right angles to the locking hook body, and the locking hook body fixed to the inner surface of a receiving frame into which the iron lid is fitted. and an insertion hole into which is inserted a push-down rod for pushing down the tip of the lever, which is formed on the periphery of the iron lid, and the bearing has a stopper that engages with the rotation shaft. A locking device for an iron manhole cover, characterized in that a long groove into which an end portion is inserted is formed, and an engagement surface with which the pawl of the rotating shaft engages is formed at a lower part of the long groove. (2) A pair of bearings fixed opposite to each other on the back side of the iron manhole cover, a rotating shaft attached to the bearings and having claws formed along the axial direction, and a rotating shaft fixed to the lower part of the rotating shaft. a lever fixed to the rotating shaft at right angles to the locking hook main body; a stopper with which the locking hook main body engages, which is fixed to the inner surface of a receiving frame into which the iron lid is fitted; It consists of a hook hole formed near the periphery of the iron lid into which a hand hook is inserted for pushing down the tip of the lever and opening the iron lid, and the bearing has a hook hole of the rotating shaft. A locking device for an iron manhole cover, characterized in that a long groove into which an end portion is inserted is formed, and an engagement surface with which the pawl of the rotating shaft engages is formed at a lower part of the long groove.