JP2540757Y2 - Lock device to prevent the compass-type support lever from opening - Google Patents

Description

[Detailed description of the invention]

[0001]

INVENTION The present invention relates to a same <br/> length of the pipe provided the overlapping portion bent in the corresponding direction to each upper end, manhole cover key supporting or the like closing freely connected to the overlapping portion A locking device for preventing the free opening of the known compass-type support lever, which hinders traffic when moving on the road by rolling the grounding wheel at the lower end of each pipe member and inevitably hinders the movement of the support lever. It depends on.

[0002]

2. Description of the Related Art A well-known compass-type support lever for supporting a manhole cover key, which has an overlapping portion bent in a corresponding direction at each upper end of a pipe material of the same length and which is freely opened and closed by a shaft, is known. Since the door can be freely opened and closed, the lower end of each pipe member and the grounding ring at the lower end of the pipe member are opened when moving on a road or the like, which hinders traffic, and the movement of the support lever has a drawback that the smoothness is poor.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to effectively prevent the above-mentioned compass-type support lever from opening naturally and to develop a configuration which eliminates the above-mentioned drawbacks. .

[0004]

SUMMARY OF THE INVENTION The lock device for preventing the compass-type support lever from opening according to the present invention is adapted to the above-mentioned purpose, and is bent to the respective upper ends of pipe members 2 , 2 of the same length in the corresponding directions. In the compass-type support lever 1 in which the overlapping portions 3 and 3 are provided, and the overlapping portions 3 and 3 are freely opened and closed by a shaft 4, the overlapping portions 3 and 3 are slightly opened at an angle.
The engaging holes 5, 5 overlapping each other are provided through the overlapping portions 3 , 3 ,
One of the overlapping portion 3 in the chain which is fixed one end, characterized in that the plug 7 which is connected to the other end of the cord 6 metal rope impossible closing inserted in a timely fashion the engaging hole 5,5 Things.

[0005]

The locking device for preventing the compass-type support lever from opening according to the present invention is the same as that described in the last section of the embodiment, and the overlapping portions 3, 3 which can be freely opened and closed by the shafts 4 of the pipe members 2, 2 are described. Into the engaging holes 5 and 5
A predetermined action is produced by the structure in which the stopper 7 can be inserted and locked so that it cannot be opened and closed.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings show one embodiment of the present invention.
1 is a front view, FIG. 2 is a side view, FIG. 3 is an enlarged front view of a main part, and FIG. 4 is a sectional view taken along the line AA of FIG.

[0007] 1 is welded compass-shaped support lever der connexion consisting pipe 2,2 of the same length, the overlap portions 3, 3 bent in a corresponding direction to each upper end, Jikuko the overlapping portions 3,3 4 enables free opening and closing. The overlapping portions 3 and 3 are provided with engaging holes 5 and 5 which overlap each other at an angle at which the pipe members 2 and 2 are slightly opened, and one of the strings 6 such as a chain or a wire having one end fixed to one of the overlapping portions 3. The stopper 7 connected to the end is inserted into the engaging holes 5 and 5 in a timely manner so that the stopper 7 cannot be opened and closed.

At the lower end of each of the pipe members 2, 2, a short pipe 8 having a three-part shape is fixed, and shafts 9 projecting from both ends are passed through the shafts 9, 9. Pipes 12 supporting the grounding wheel 11 are fitted, and pipes 14 projecting a pair of support arms 13 are fitted to respective inner ends of the shafts 9. A through hole (not shown) between the tips of the supporting arms 13 and 13
Is fixed. The pipe 14, 14
As shown in FIG. 2, the bar 16 can be rotated to about 200 ° without being fully rotated.

Each pipe member 2 of the compass type support lever 1
2 supports a manhole cover key and the like. In order to support the manhole cover key, a screw portion 16a provided at an upper portion of a bar 16 fitted into the center of the one-shaped hole of the manhole cover is passed through the through hole of the support piece 15, and the support piece 15 The nut 18 to be joined to the lower end is screwed, and the key 18 is projected on both sides of the lower end. The length of the projection of the key 18 should be within the length of the keyway of the manhole.

When the compass-type support lever 1 of this embodiment is moved by rolling the grounding wheels 11, 11, the engagement holes 5, 5 are overlapped, and the plug 7 is inserted as shown in FIG. 2 is fixed by locking it so that it cannot be opened and closed, and the bar 16 and the like are flipped as shown in FIG.

[0011]

[Effect of the Invention] The present invention applies to each pie of the compass type support lever.
Can the lock material be locked so that it cannot be opened and closed by the engagement holes and stoppers?
When you are not in use, roll the grounding wheel when moving.
The natural opening of the path-type support lever is effectively prevented and moved
This has the effect that it can be performed smoothly.

[Brief description of the drawings]

 The attached drawings show one embodiment of the present invention,

FIG. 1 is a front view,

FIG. 2 is a side view,

FIG. 3 is an enlarged front view of a main part,

FIG. 4 is a sectional view taken along line AA of FIG. 3;

[Explanation of symbols]

1 → Compass type support lever 2 → Pipe material 3 → Overlapping part 4 → Shaft 5 → Engagement hole 6 → String 7 → Plug 8 → Short pipe 9 → Shaft 10 → Arm 11 → Grounding wheel 12 → Pipe 13 → Support arm 14 → Pipe 15 → Support piece 16 → Bar 16a → Screw 17 → Nut 18 → Key

Claims (1)

(57) [Scope of request for utility model registration] An overlapping portion (3, 3) bent in a corresponding direction is provided at each upper end of a pipe member (2 , 2) of the same length.
3 compass-shaped support les were open freely connected by Jikuko 4
In the bar 1, the engaging holes 5, 5 overlapping each other are penetrated through the overlapping portion at an angle at which the overlapping portions 3, 3 are slightly opened.
Opening of the compass-shaped support lever, characterized by a chain fixed one end, a plug 7 which is connected to the other end of the cord 6 metal rope impossible closing inserted in a timely fashion the engaging hole 5,5 Prevention locking device.