JPS5853358Y2 - grating - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure of a grating, and more particularly to a grating that is improved so that the lid body can be easily removed and the generation of noise can be prevented.

Traditionally, gratings (grid-shaped covers) have been used to cover the openings of road gutters, sewage pits, etc. with a grid-shaped cover body made of a welded or cast structure and angle members with a so-called letter-shaped cross section. Widely used.

Such a lid body is usually placed so that it does not move easily by falling into the angle members fixed to both side edges of the groove opening, but as shown in FIG. 1, the lid body 1
Since there is a slight gap between the lid body 1 and the angle member 2, it is inevitable that noise (rattling) will be generated when a heavy object such as a car passes over the lid body 1, and furthermore, it will cause an impact. There is a problem in that the life of the lid body 1, the angle member 2, etc. is shortened due to the action of repeated loads.

To deal with such looseness of the lid body 1,
Conventionally, it is fixed to the angle member 2 with bolts, or
Alternatively, as shown in FIG. 2, there has been an attempt to suppress the noise by placing a rubber packing 3 on the upper surface of the angle member 2.

However, in any of the above cases, the inflow of earth and sand and muddy water into the gap between the lid body 1 and the angle member 2 is unavoidable, and since there is no outlet for these,
The gap is filled by the accumulation of earth and sand, and the lid body 1
is fixed to the angle member 2, making removal of the lid body 1 extremely difficult.

In addition, grating installers often fill these gaps with asphalt to suppress noise generation, and in such cases, the task of removing the lid body 1 becomes even more labor-intensive and difficult. be.

Furthermore, in the case where the gasket 3 is attached, drainage of the gap between the lid body 1 and the angle member 2 is poor, which not only shortens the life of the gasket 3 but also reduces the durability due to corrosion of the lid body 1. The problem was a decline in

The present invention was developed based on this background, and the purpose is to provide a grating that is easy to open and can prevent the generation of noise. In a grating of the type in which an opening such as a grid is covered by a grid-like lid body and its receiver, a flange portion extending from the upper end surface of the horizontal side of the lid body toward the receptor is provided, and the flange portion A packing made of an elastic material having at least one protrusion long enough to come into contact with the receiver is partially attached to the side end surface of the lid body below the part in the direction in which the side end surface extends. The lid body is restrained to the receiver by a gasket, and a notch is provided in the lower part of the side end surface of the lid body where the gasket is not provided, so that the lid body and the receptor are connected. The purpose is to allow muddy water, dirt, etc. that have entered the gap between the grooves and the like to be discharged from the notch into the opening of the groove or the like.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A more detailed explanation will be given below based on drawings showing a grating which is an embodiment of the present invention.

In FIGS. 3 to 5, reference numeral 10 denotes an angle member (receiver) having an L-shaped cross section fixed to both side edges of the opening, and includes a horizontal portion 11 and a vertical portion 12.

The lid body 20 that is dropped into the angle member 10 has a flange portion 21 which is an L-shaped horizontal portion. It consists of a web part 22, which is a vertical part, and a lattice part 23, and the lattice part 23 is formed into a lattice shape by welding or casting, such as a bearing bar (made of band steel) or a twist bar (twisted square bar steel). .

Between the angle member 10 and the lid body 20, there are three protrusions 2 partially located in the direction in which the web portion 22 extends.
A rubber gasket 26 having a diameter of 6 a is provided,
The height of the protruding portion 26a from the bottom is slightly larger than the gap H (FIG. 4) between the vertical portion 12 of the angle member 10 and the web portion 22 of the lid body 20.

Further, at the lower end of the web portion 22, a notch 29 is formed at a predetermined height H2 and has a width that contacts the packing 26.
One tongue portion 26b provided on the opposite side has the height H.
2 and inserted into the notch 29,
Moreover, it is pressed by the weight of the main body 20.

The packing 26 is fixed to the web portion 22 by a bolt 27 and a washer 28.

Furthermore, as shown in FIG.
A rectangular notch 24 is provided with a size that allows soil and sand to flow out.

Further, in a portion of the flange portion 21 above the notch 24, a notch 25 including a semicircular shape is provided as a hole into which a crowbar is inserted.

Therefore, in such a configuration, when the lid main body 20 is dropped into the angle member 10, the protruding portion 26a of the gasket 26 is attached to the opposing angle member 10, as shown in FIG.
The lid main body 20 is elastically restrained by the angle member 10 by interfering with the vertical part 12 of the angle member 10, so that horizontal wobble can be effectively damped, and vertical Since the directional wobble is damped by the tongue portion 26b, the noise that conventionally occurs when a heavy object such as a vehicle passes over the grating can be almost completely prevented.

In addition, muddy water and dirt that have flowed into the gap between the angle member 10 and the lid body 20 do not accumulate and can smoothly flow out from the notch 24 to the side gutter, etc., so that when the lid body 20 is removed, the lid body 20 There is less sticking of the lid, making it extremely easy to open the lid.

Moreover, by providing a notch 25 into which a crowbar or the like is inserted, the lid can be opened easily even if the lid body 20 is somewhat stuck.

Furthermore, since the drainage in the gap became better,
The angle member 10 and the lid body 2, which were common problems in the past,
Corrosion caused by 0 was eliminated.

Although the above-mentioned specific example is the most preferable example for implementing the present invention, the present invention is not limited to this in any way, and may be implemented with various modifications and improvements based on the knowledge of those skilled in the art. It is possible.

For example, in the above embodiment, a grating in which angle members were provided on two opposing sides in the longitudinal direction of the groove was exemplified, but a grating in which angle members were provided on four sides in a rectangular pit may also be used. Although the rubber gasket has at least one protrusion, it may be made of rubber having at least one protrusion or an elastic material other than rubber, and even if there is no hole for inserting the crowbar, the present invention It does not deviate from the scope of.

The effects of the present invention, which has the above structure and function, are (1) improved drainage efficiency of muddy water and earth and sand in the gap between the grating cover body and the angle member, and reduced sand trapping, sticking, etc. , (2) The opening of the lid has become extremely easy due to the reduction of sand buildup and sticking in the gap, and (3) By press-fitting the packing made of elastic material into the gap, the lid body and receiver are easily connected. (4) Improved drainage performance within the gap made it possible to extend the life of the lid body, angle member, and packing. It is.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a main part showing a state in which a conventional grating is installed, and FIG. 2 is a view corresponding to FIG. 1 in which a packing is installed. FIG. 3 is a plan view of essential parts of an embodiment of the present invention, FIG. 4 is a cross-sectional view taken along IV-IV in FIG. 3, and FIG. 5 is a cross-sectional view taken along ■--■ in FIG. Member (receiving frame), 20: lid main body, 21: flange portion, 22: web portion (side end surface), 24: notch portion, 26: packing (elastic material), 26 a: protruding portion.

Claims (1)

[Scope of utility model registration request] In a grating of a type in which an opening such as a groove is covered by a grid-like lid body and its receiver, a flange portion extending from the upper side end surface of the lid body in the horizontal direction toward the receptor is provided, and the flange portion On the lower side end surface of the lid body,
A gasket made of an elastic material having at least one protrusion long enough to come into contact with the receptor is partially attached in the direction in which the side end surface extends, and the lid body is attached to the receptor with the gasket. In addition, a notch is provided in the lower part of the side end surface of the lid body where the gasket is not provided to prevent muddy water, dirt, etc. that have entered the gap between the lid body and the receiver. A grating characterized in that the grating is discharged from the notch into an opening such as a groove.