JP3162993B2 - Vertical hole curing lid material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a curing lid material for preventing a dangerous substance from falling down by a vertical hole or preventing a worker from stepping on a building site.

[0002]

2. Description of the Related Art At a construction site, there are vertical pipes penetrating through the floor of each floor for air conditioning, hygiene, or electrical equipment. In order to pass these vertical pipes, vertical holes are planned in a concrete slab in advance. It is formed in the position where it was done. These vertical holes are eventually backfilled after piping, but until the piping is completed, vertical through holes remain open in the slab, and tools and building materials fall from these through holes. Or a worker stepped on and was dangerous.

[0003] In order to prevent dangers caused by the vertical through holes as described above, there are sites where simple curing is performed by emergency measures such as placing a plywood or attaching a cloth adhesive tape. Measures were inadequate.

[0004]

The above-mentioned vertical through-holes have various diameters, but most of them use a standard-size paper tube (called a void tube in the field). This is a through hole that has been removed. An object of the present invention is to provide a vertical hole curing lid material that can be safely and reliably cured in correspondence with these vertical through holes having various diameters and that can be easily attached.

[0005]

Means for Solving the Problems The vertical hole curing cover material according to the present invention has the following structure in order to solve the problems of the prior art as described above and to achieve the object. That is, in order to cover and cure the vertical through hole of the building site, a vertical hole curing lid material formed of one iron plate or a metal plate instead of an iron plate, and a sleeve for forming the vertical through hole. A plurality of cut-out portions that can be bent corresponding to two or more types of standard diameter dimensions of the pipe material used as the pipe,
Irregular reinforcing ribs are formed at approximately equal center angle positions, and the uneven reinforcing ribs are formed by drawing, and the cutout portions are bent so as to be brought into contact with the inner peripheral surface of the vertical through hole.

[0006] It is preferable that a portion of the cutout portion that is bent and brought into contact with the inner peripheral surface of the vertical through hole is formed in a convex curved surface. Further, it is preferable that a non-slip portion having a saw blade shape is formed on a peripheral edge of the one metal plate.

[0007]

FIG. 1 is a plan view showing an embodiment of a vertical hole curing lid material according to the present invention. This vertical hole curing lid material 11
As shown in the figure, the outer contour is made of a single zinc steel sheet having a thickness of 0.6 mm and an intermediate shape between a square and a circle.
Along the circumference, U-shaped cutouts 12 and 13 are formed at a total of eight locations, four at the inner periphery and four at the outer periphery. The bases 14 of the cutouts 12 and 13 are subjected to drawing processing so as to be depressed in the bending direction so that an operator can easily bend them at a fixed position. The location where the base 14 is provided corresponds to the outer diameter of the paper tube. For example, the base 14 of the cutout 12 on the inner peripheral side is
The base 14 of the cutout 13 on the outer peripheral side is attached to a paper tube having a diameter of 5 mm.
Cutout 1 so that is equivalent to a 150 mm diameter paper tube
2, 13 positions are set (medium size). Other, 7
To be equivalent (small) to a 5 mm diameter paper tube and a 100 mm diameter paper tube, or a 175 mm diameter paper tube and 2
It can also be set to correspond to a paper tube with a diameter of 00 mm (large).

As shown in the sectional view of FIG.
Is formed by bending the cutout portion 12 or 13 so that the vertical through hole 1
5 is attached to the slab 16 so as to cover the vertical through hole 15 by being inserted from above so as to contact the inner peripheral surface of the slab 5. When mounted on the concrete slab 16, the metallic luster of the zinc steel plate is
In contrast to No. 6, it is convenient in making the worker aware of its existence and contributing to safety. If necessary, it can be painted in a more conspicuous color.

FIG. 3 is a sectional view taken along line AA of FIG. 1. As shown in FIG. 2 and FIG.
A portion 17 that is bent and brought into contact with the inner peripheral surface of the vertical through hole 15 is formed on the convex curved surface. When inserting the cutout portion 12 or 13, the operator does not bend the cutout portion 12 or 13 completely to 90 °, but only to the extent that the tip of the cutout portion 12 or 13 enters the vertical through hole 15. , Bent into a hem-spread state to form a vertical through hole 15
When this is inserted into the vertical through hole 15, the convex curved surface abuts against the inner surface of the vertical through hole 15 so as to be pressed against the inner surface and is securely attached by the spring force of the cutout 12 or 13. The cut-out portion is formed by using two adjacent inner peripheral sides and one outer peripheral side opposed thereto (inversely, two adjacent outer peripheral sides and inner peripheral side opposed thereto). (It is also possible to place it at one location on the side), and it is also possible to attach it to an intermediate diameter vertical through hole. Even if the paper tube is not used for the sleeve tube and, for example, a vinyl chloride tube is used and the inside diameter of the vertical through hole is slightly different, the bending angle of the cutout 12 or 13 is adjusted, and the cutout to be bent is appropriately adjusted. By making a selection, or by appropriately selecting a lid material to be used from a large size to a small size, it is possible to surely attach the cover material to almost all vertical through holes.

FIG. 4 is a cross-sectional view taken along the line BB of FIG. 1. As can be seen from FIGS. 1 and 4, this cover member 11 has uneven ribs 18, 19 and 20 formed by drawing. I have. The central portion protrudes upward in a circular shape (convex shape).
In the periphery, an annular second rib 19 (convex) is formed concentrically with the first rib. Therefore, the space between the first rib 18 and the second rib 19 is relatively concave. Further, on the outer peripheral side, a discontinuous annular third rib 20 (concave shape) is formed concentrically with the first rib and the second rib so as to be located between the cutouts 12 and 13. The rigidity of the lid member 11 is enhanced by these three ribs, and even a steel plate having a thickness of 0.6 mm exhibits a rigidity equivalent to a steel plate having a thickness of 1.0 mm or more. The outermost edge is
It is bent obliquely downward so as to follow the surface of the slab 16. All of these irregularities are given by a relatively smooth curved surface, so that the worker does not trip or get caught in the state of being attached to the slab 16.

Further, a saw blade-shaped non-slip 21 is formed at four positions on the outermost peripheral edge, and the non-slip 21 digs into the slab surface to form the cutout 12 or 13.
And the inner peripheral surface of the vertical through hole 15 can be further complemented.

When it is necessary to prevent water from flowing down the lower floor from the vertical through hole 15, a commercially available sheet material in which a strong waterproof adhesive and a cushion material are bonded to aluminum foil is used. What is necessary is just to stick on the slab surface from the lid material 11.

[0013]

With the vertical hole curing lid material according to the present invention, it can be easily and reliably attached to the vertical through holes of any size, and effective curing can be performed as a safety measure against the vertical through holes at the site.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a vertical hole curing lid material of the present invention.

FIG. 2 is a cross-sectional view showing a use state of the vertical hole curing cover material of FIG.

FIG. 3 is a sectional view taken along line AA of FIG. 1;

FIG. 4 is a sectional view taken along line BB of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Vertical-hole curing lid material 12 Inner-peripheral cutout part 13 Outer-peripheral-side cutout part 14 Base of cutout part 15 Vertical through-hole 16 Slab 17 Place to be contact | abutted to the inner peripheral surface of a vertical through-hole 18 1st rib 19th 2 ribs 20 3rd ribs 21 Non-slip

Claims (3)

(57) [Claims] 1. A vertical hole curing lid member (11) formed of one iron plate or a metal plate instead of an iron plate for covering and curing the vertical through hole of a building site, wherein the vertical through hole is provided. A plurality of cutouts (12, 13), which can be bent corresponding to two or more types of standard diameter dimensions, respectively, of a tube material used as a sleeve tube for forming
Irregular reinforcing ribs (18, 19, 20) are formed at substantially equal center angle positions, and the concave and convex reinforcing ribs (18, 19, 20) are formed by drawing, and the cutout portion is bent and brought into contact with the inner peripheral surface of the vertical through hole. Characteristic vertical hole curing lid material. 2. A portion according to claim 1, wherein said cut-out portions (12, 13) are formed in a convex curved surface at a portion (17) bent and brought into contact with an inner peripheral surface of said vertical through hole. Vertical hole curing lid material. 3. The vertical hole curing lid material according to claim 1, wherein a saw blade-shaped non-slip portion (21) is formed on a peripheral edge of the one metal plate.