JPH0237906Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial field of application> The present invention is for fixing to a lid receiver part a groove cover that is mounted on various trenches such as wiring grooves used for undergrounding electric cables. This invention relates to a fixing device for a groove cover.

<Problems to be solved by the invention> In the case of wiring trenches, etc., it is possible to prevent the unnecessary opening of the trench cover, or to prevent the trench cover from being blown off in the event of an explosion, etc. in the trench. It is necessary to prevent this.

Conventionally, in order to hold this groove lid in a lid holder formed on a lid holder frame or the like, a fixing means such as connecting to the lid holder with a bolt is applied, and after the fixation is released, the groove lid is lifted. Due to necessity, it was necessary to arrange a handle on the plane of the groove cover.

By the way, if this handle is provided on the upper surface of the groove cover,
Various problems arise in terms of maintenance, such as the aesthetic appearance of the surface being degraded and sand and the like accumulating in the handle. Further, the handle also causes drawbacks such as an increase in the number of parts.

In addition, after the groove cover is placed on the cover receiving surface, it is necessary that the connecting parts such as screw holes formed on the cover receiving surface and the connecting parts such as bolt insertion holes of the groove cover are accurately aligned vertically. For this reason, it is necessary to move the groove cover slightly, but some groove covers have a heavy load of 100 kg or more, and the screw holes are difficult to see from above.
It was not easy to align the position, making the fixing work troublesome.

The object of the present invention is to provide a gutter cover fixing device that can easily and firmly attach and fix the gutter cover, and also has the function of eliminating the need for a handle when lifting the gutter cover. That is.

<Means for solving the problem> The present invention forms a locking hole in the upper surface of the side of the groove cover, connects an operating path to the lower part of the locking hole, and connects the lower end of the operating path to the locking hole. A cylindrical regulating end is provided that protrudes from the bottom surface of the groove cover, and a sliding frame is provided at a position directly below the locking hole in the cover receiving part disposed along the groove path, and the sliding frame is provided at a position directly below the locking hole. The frame accommodates a movable nut having a truncated conical connecting part into which the regulating end fits externally, and the screw hole thereof is exposed from the upper surface of the sliding frame, and the movable nut is placed on the periphery of the locking hole of the groove cover. Insert into the operating path a connecting shaft that is provided with an operating head that is latched to the operating path, a linking collar that is disposed in the operating path, and a male screw that is screwed into a screw hole in the lower end of the lid receiver. It is characterized by the fact that

<Operation> When the connecting shaft is screwed into the screw hole of the movable nut and tightened, the operation head is pressed against the circumference of the locking hole of the groove cover, and the groove cover is held in the cover receiving part.

In this screwing operation, if the positions of the connecting shaft and the screw hole are slightly misaligned, if the positions are almost equal, the cylindrical regulating end protruding from the bottom surface of the groove cover can be connected to the connecting part of the movable nut. By fitting the movable nut outwardly, the conical surface around the movable nut produces a guiding action, and the movable nut is adjusted to move within the sliding frame, so that the center line of the connecting shaft and the screw hole of the movable nut coincide. By screwing the screw hole of the connecting shaft into the female screw of the movable nut, the groove cover can be fixed by the connecting shaft. Therefore, there is no need to slightly move the groove cover itself.

To open the groove cover, first rotate the connecting shaft in the opposite direction to remove it from the screw hole in the cover receiving frame. In this state, the operating head of the connecting shaft is slightly raised above the upper surface of the groove cover. Therefore, when a tool is hung on the neck of the operating head on the groove cover and pulled upward, the connecting flange of the operating path comes into contact with the lower surface of the locking hole, and the groove cover is lifted as the connecting shaft is pulled. becomes.

<Embodiment> An embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in FIGS. 2 and 4, on both sides of the groove path 1,
A concrete base 2 is formed, and its upper surface serves as a lid receiving part 3. A floor 4 is formed around the lid holder 3 .

A sliding frame 5, clearly shown in FIG. 3, is embedded in the lid receiving portion 3. The sliding frame 5 consists of a flat rectangular housing, and a mounting hole 6 is formed in the side surface thereof, and a semi-oval shaped window hole 7 is provided in the upper surface thereof. In addition, a movable nut 8 formed by connecting a truncated conical connecting portion 11 to the upper part of a rectangular substrate 10 is housed in the sliding frame 5 by inserting the rectangular substrate 10 through the mounting hole 6. A connecting portion 11 protrudes from 7 and a screw hole 9 is exposed. As described later, the connecting portion 11
The conical periphery becomes the guiding peripheral surface 12. Further, a lid 13 is attached to the mounting hole 6 after the movable nut 8 is accommodated, and the movable nut 8 is confined within the sliding frame 5.

The inner width of the sliding frame 5 is made larger than the width of the rectangular substrate 10, and the width of the window hole 7 is also made slightly larger than the maximum diameter of the base end of the connecting portion 11. For this reason,
Coupled with the fact that the connecting portion 11 can be moved in the front-back direction by the half-oval shaped window hole 7, the movable nut 8 is allowed to move slightly in the front-rear, left-right, and right-hand directions.

On the lid receiving part 3, there is an elastic sheet 14,
As shown in FIGS. 1 and 2, a plurality of groove covers 15 are applied along the groove path 1. As shown in FIGS.

The groove cover 15 is formed by embedding concrete or the like on a rectangular dish-shaped frame 16, and when placed on the cover receiver 3, its upper surface is formed on the periphery of the cover receiver 3. It is made to be flush with the top surface of floor 4.

Insertion holes 17 are provided on the lower surface of both corners of the frame 16.
is formed, and a cylinder 18 for forming an operating path 23 to be described later is fixed around the insertion hole 17,
Its lower end protrudes from the insertion hole 17 below the lower surface of the frame 16, and serves as a cylindrical regulating end 19. The inner diameter of the cylinder 18 is smaller than the maximum diameter of the base of the connecting portion 11. Further, a mouthpiece 21 is fixed onto the cylinder 18. The mouthpiece 21 has a diameter equal to the inner diameter of the cylinder 18 and matching at the top and bottom.
A pipe line 22 is formed, and inside the pipe section 22 of the cylinder 18, a vertically long operating path 23 is configured.

Further, a locking hole 24 having a smaller diameter than the tube portion 22 is formed at the upper part of the tube portion 22, and a large diameter hole 25 is connected to the upper portion of the locking hole 24. is fitted.

A connecting shaft 27 is inserted through the operating path 23 . The connecting shaft 27 has a large diameter hole 25 in its upper part.
A circular operation head 28 having the same diameter as the above-mentioned movable nut 8 is provided with a linking collar 29 at its center, and a male screw 30 that can be screwed into the screw hole 9 of the movable nut 8 at its lower part.
is formed. Further, the lower end of the connecting shaft 27 is formed with a conical surface 31 whose diameter decreases downward. Further, on the upper surface of the operating head 28, as shown in FIG. 5, two rectangular operating grooves 32, 32 are arranged side by side.

In this configuration, the groove cover 15 is installed on the cover receiving part 3 with the connecting shaft 27 substantially aligned with the screw hole 9 of the movable nut 8. By this installation, the cylindrical regulating end 19 fits onto the connecting part 11, and the movable nut 8 moves within the sliding frame 5 due to the action of the guide peripheral surface 12.
The screw hole 9 is vertically aligned with the connecting shaft 27.

Then, the conical surface 31 of the connecting shaft 27 is inserted into the screw hole 9. At this time, the tip of the operating path 23 does not necessarily hang vertically, but the guiding action of the conical surface 31 makes it easy to insert the male screw 30 into the screw hole 9. It is screwed into the hole 9. In this tightened state, the operating head 28 is tightly fitted into the large diameter hole 25 and its neck is locked onto the locking hole 24.

The rotation of the connecting shaft 27 is performed using a tool 33 shown in FIG.

Here, the tool 33 has a T-shape, and operating claws 35, 35, which fit tightly into the operating grooves 32, 32, are protruded from one end of the operating rod portion 34. Further, a scooping piece 37 is provided at the lower end of the shaft portion 36 of the tool 33. The scooping piece 37 has a window hole 3 at its side end that has a similar shape to the side surface of the operating head 28 of the connecting shaft 27.
8, inside which only the shaft portion of the connecting shaft 27 can pass from the side, and a locking portion 39 that is linked to the neck portion of the operating head 28 is formed.

By using this tool 33, the above-mentioned tightening operation of the connecting shaft 27 can be performed by inserting the operating claws 35, 35 into the operating grooves 32, 32, operating the shaft portion 36, and rotating the operating rod portion 34. It can be applied by

Next, the means for removing the groove cover 15 will be explained.

First, as described above, the operating claws 35, 3 of the tool 33
5, rotate the operating rod portion 34 in the opposite direction to that used during the installation work. As a result, the connecting shaft 27 is raised by the guiding action of the screw hole 9 of the movable nut 8 and the male screw 30, and as shown in FIG. 4, the operating head 28 is in a position separated from the locking hole 24.

Therefore, with the scooping piece 37 of the shaft portion 36 of the tool 33 facing downward, the window hole 38 and the operating head 28 are aligned, and the operating head 28 is scooped from the side through the window hole 38 into the scooping piece 37. Pay. Then, if you pull the operating rod part 34 of the tool 33 upward while grasping it with your hand,
The locking portion 39 comes into contact with the neck of the operation head 28 to cause the connecting shaft 27 to rise, and the connecting collar 29 of the connecting shaft 27 comes into contact with the lower surface of the locking hole 24 within the operating path 23. The tool 33 and the groove cover 15 are integrally linked, and as the tool 33 is pulled, the groove cover 15 is lifted up as shown by the chain line in FIG.

By performing this operation simultaneously on both sides of the groove cover 15 where the locking holes 24 are located, the groove cover 15 can be removed.

In this configuration, the connecting shaft 27 not only connects the lid receiving part 3 and the groove cover 15, but also allows the connecting flange 29 of the connecting shaft 27 to connect with the groove cover 15 when removing the groove cover 15 from the groove path 1. It engages with the lid 15 and functions similarly to a handle when lifting it.

In the embodiment described above, the cylinder 18 is necessary only to form the operating passage 23, so it is not necessarily necessary, and a gap that will become the operating passage 23 can be created at the lower part of the locking hole 24 by other means. Just let it happen. In this case, the cylindrical regulating end 19 may be separately formed on the frame 16.

In the embodiment described above, the lid holder 3 is constructed from the upper surface of the concrete base 2, and the sliding frame 5 is embedded in the lid holder 3. However, the lid holder 3 is mounted and fixed on the base 2. However, the horizontal support surface of the lid receiving frame may be used as the lid receiving portion, and the sliding frame 5 may be fixed to the upper or lower surface of the supporting surface.

<Effects of the invention> As described above, the present invention allows the movable nut 8 that is threadedly engaged with the connecting shaft 27 to be moved slightly within the sliding frame 5,
A cylindrical regulating end 19 protrudes from the lower surface of the groove cover 15,
With the groove lid 15 attached to the lid receiving part 3, the cylindrical regulating end 19 is fitted onto the connecting part 11, and the movement within the sliding frame 5 is adjusted by the action of the guide peripheral surface 12. Since the connecting shaft 27 and the screw hole 9 are aligned vertically, the connecting shaft 27 can be screwed together without adjusting the sliding of the groove cover 15 on the lid receiver 3, which tends to be subject to a large load. Therefore, the groove cover 15 can be easily fixed.

When opening the nut, the connecting shaft 27 is first rotated and the operating head 28 of the connecting shaft 27 is raised by the guiding action of the screw hole 9 of the movable nut 8 and the male screw 30. The groove cover 15 is removed from the cover receiver 3 by pulling the connecting shaft 27 using the lever, and further abutting the linking collar 29 around the lower surface of the locking hole 24 to apply a tensile force to the groove cover 15. Therefore, the connecting shaft 27 connects the lid holder 3 and the groove lid 15.
By connecting the groove cover 15 with the handle and also providing the function of the handle of the groove cover 15, there is no need for a handle or the like.
The groove cover 15 can have a beautiful surface, and the number of parts can be reduced.

[Brief explanation of drawings]

The attached drawings show an embodiment of the present invention, in which FIG. 1 is a plan view, FIG. 2 is a longitudinal side view showing how the groove cover 15 is attached, and FIG. 3 is a separated perspective view of the sliding frame 5 and the movable nut 8. 4 is an enlarged vertical sectional side view of the main part in a state where the screwing between the connecting shaft 27 and the movable nut 8 is released, and FIG. 5 is a perspective view of the upper end of the connecting shaft 27 and the tool 33. 3...Lid holder, 5...Sliding frame, 7...Window hole, 8
...Movable nut, 9...Screw hole, 10...Rectangular board, 11...Connecting portion, 12...Guiding peripheral surface, 15...
...Groove cover, 16...Frame body, 19...Cylindrical regulation end,
23... Working path, 24... Locking hole, 25... Large diameter hole, 27... Connection shaft, 28... Operating head, 29...
...Linking tsuba, 30...Male screw, 32...Tool, 34
...Operating rod part, 35...Operating claw.

Claims (1)

[Claims for Utility Model Registration] A locking hole is formed in the upper surface of the side of the groove cover, and an operating path is connected to the lower part of the locking hole, and the lower end of the operating path is formed into a cylindrical regulating end. This is protruded from the lower surface of the groove cover, and a sliding frame is provided at a position directly below the locking hole in the lid receiving part disposed along the groove path, and the regulating end is attached to the sliding frame. A movable nut with a truncated cone-shaped connecting part that is fitted onto the outside is housed, the screw hole of which is exposed from the top surface of the sliding frame, and an operating head that is latched onto the periphery of the locking hole of the groove cover. A connecting shaft is inserted into the operating path, and includes a connecting flange disposed in the operating path, and a male screw threaded into a screw hole of the lid receiving portion at the lower end. Gutter cover fixing device.