JP2543841B2 - Metal groove lid - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal groove lid which is lightweight, can freely set a slit-like gap formed on the upper surface thereof, and can easily cope with a curved groove path or the like. It is used as an alternative to gratings placed on outdoor rainwater drains.

[0002]

2. Description of the Related Art Heretofore, gratings have been used for rainwater gutters and the like in passages, and particularly metal gratings have been frequently used. This is because it drains well and has excellent mechanical strength.
In such a metallic grating G, a plurality of strip-shaped main members 7 are arranged in parallel, and then the connecting members 8 (for example, twist rods) are crossed in a grid pattern, and their intersections 91 are fixed to each other by electric pressure welding. Things were common (Fig. 13). In addition, a connecting member insertion hole is provided in the main member, and the connecting member is inserted into the main member so as to form a grid shape and both are fixed (Japanese Patent Publication No. 2-564).
62).

[0003]

However, any of the conventional gratings has the following problems. An accident occurred in which a pedestrian walked and fell while sandwiching the heel of the heel into the lattice groove 92 of the grating G, or when the bicycle was trying to pass by a bicycle, the pedestrian fell into the lattice groove 92 and fell. Therefore,
In order to improve the above-mentioned inconvenience, grating groove 92 of grating G
There was an attempt to reduce. However, not only the weight per unit laying area becomes heavy, but also the bad point, the manual work, the increase of the manufacturing cost due to the increase of the material, the inconvenience of the handling and the like are caused. On the other hand, in recent years, in order to create a comfortable urban space, rainwater drains, etc., installed at the entrance to buildings,
We started to make a gentle curve as a whole and to devise measures to harmonize with the building. However, it has been difficult to manufacture conventional gratings, and it is a custom-made product, resulting in a significant cost increase.

The present invention solves the above problems, and it is easy to manufacture, and the drainage is improved while the upper surface is flushed.
It is an object of the present invention to provide a lightweight metal groove lid that secures a toe surface to ensure walking and bicycle traveling safety, and can flexibly cope with curved grooved roads depending on the application.

[0005]

MEANS FOR SOLVING THE PROBLEMS The metal groove lid of the present invention is
Form a flat strip and a narrow slit-shaped gap on the top surface.
And the width of the slit-shaped gap widens downward.
The plate-like body was bent into a wavy shape and further provided on the plate-like body .
A corrugated plate-like member (1) having a constant width in which a plurality of openings are arranged corresponding to an area including each lower surface, and a cross section having a substantially lip-mizo shape,
Comb-shaped protrusions are formed on the opposite edges facing downward,
The protrusions are engaged with both side edges of the plate-shaped member according to the wave pitch.
The side edge members (2, 2) that are fitted so as to fit together,
It is characterized by having . Here, the “corrugated plate member” refers to a corrugated plate member having a wavy cross section. The wavy, UGA have a state in which the contoured, here,
Form a flat strip and a narrow slit-shaped gap on the top surface.
And the width of the slit-shaped gap widens downward.
It means the repetition of unevenness.

[0006]

When the metal plate member is formed into a corrugated plate by roll forming or the like, the mechanical strength is remarkably increased. The corrugated plate member thus formed retains its corrugated shape when the comb-teeth-shaped projections of the side edge members are fitted into the corrugated recesses on both side edges.
At this time, the size of the opening on the upper surface can be freely reduced by bringing adjacent flat strips on the upper surface close to each other and forming an elongated slit-shaped gap when bending into a corrugated shape. On the other hand, when the wave pitch of the corrugated plate member is reduced, the opening ratio on the upper surface increases, and drainage does not deteriorate.
In addition, since the corrugated plate-shaped member has a bellows shape as a whole, when the inner side is narrowed, the corrugated plate-shaped member is easily bent into a fan shape. In this state, when the side edge members are fitted to both side edges and fixed,
The metal groove lid with the desired curve is completed.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on embodiments. (1) Example 1 FIGS. 1 to 4 show an example of a metal groove cover according to the present invention. A metal groove cover A includes a corrugated plate member 1 and side edge members 2 and 2. And edge members 3 and 3.

The corrugated plate member 1 is obtained by pressing a metal plate made of stainless steel having a thickness of 3 mm into a predetermined plate member 4, and further,
This is formed into a corrugated plate by roll forming. First, by press molding, a metal plate having a constant width B is formed into a plate-shaped body 4 in which elongated holes 41 are opened at regular intervals (FIG. 2). Then, from the plate-like body 4 by roll forming
And Hirajo portion 11 of width W on the upper surface, a slit-shaped gap 1 narrow T
Forming a corrugated member 1 of the wave pitch P to be provided and 2 (Figure 3). At this time, the opening 41 is provided with the slit-shaped gap 12
Is located directly below the corrugated plate-shaped member 1. Narrow T of the slit-shaped gap 12 is spread downward, the width W of Hirajo portion 11 on the opposite is bent so as to be narrower (Fig. 3). This is to improve the ability to remove small stones or the like that are sandwiched in the slit-shaped gap 12.

In the present embodiment, the upper side 411 of the long hole related to the opening 41 is cut to a position slightly higher than the lower surface of the corrugated plate-like member 1 to enlarge the opening 41. This is because in addition to improving drainage, even if gravel or the like falls into the slit-shaped gap 12, it immediately passes through the metal groove lid A.

The side edge members 2 and 2 have a cross section of a lip groove.
The frame is shaped like a frame and is fitted to both side edges of the corrugated member 1.
The side edge member 2 is also punched into a predetermined shape by press molding and then roll-formed into a substantially lip-groove shape.
(A close approximation of lip grooved steel) . First, the thickness is about 3m
A stainless steel strip having a constant width is formed by press working, and comb-shaped projections 21 and 22 are formed on both side edges of the strip so as to match the wave pitch P. Here, the protrusion 21
The phase of the projection 22 and the phase of the projection 22 are shifted by a half pitch. Next, this pressed product is bent by a forming process into a substantially lip-recessed cross section, and the projections 21 and 22 are positioned so as to vertically oppose each other at both ends thereof (FIG. 1). The protrusion 21 is fitted from above the corrugated plate member 1 so as to mesh with the slit-shaped gap 12, and the other protrusion 22 is arranged from below the corrugated plate member 1 to the lower space 1 of the flat strip 11.
11 has a structure in which it is fitted so as to mesh with each other (see FIG. 6).

Reference symbols 3 and 3 denote edge members welded to both end edges of the corrugated plate member 1. This is for reinforcement. The edge member 3 is made of a stainless flat bar. Code 5
Shows welding stoppers that fix the corrugated plate-shaped member 1 and the side edge member 2 on the upper surface and the lower surface of the metal groove cover A.

The metal groove cover A is assembled as follows. A corrugated plate 4 is obtained by punching an opening 41 from a metal plate by press working, and is further roll-formed into a corrugated plate, which is cut to a predetermined length L to form a corrugated plate member 1. Then, the side edge members 2 and 2 having substantially lip-shaped cross sections and formed with the comb-tooth-shaped projections 21 and 22 are fitted into both side edges of the corrugated plate-like member 1. Here, the projections 21 and 22 of the side edge member 2 are fitted into the concave portions of the corrugated plate-shaped member 1. Then, the end edge members 3 and 3 are welded and fixed to both end edges of the corrugated plate member 1.

The metal groove cover A is completed by welding the joints between the corrugated plate-shaped member 1 and the side edge members 2 in places on the upper and lower surfaces of the assembly thus completed. Such metal groove lid A
FIG. 4 shows a state in which is mounted on the gutter M for rainwater. Reference numeral 6 is a groove lid receiving frame, and reference numeral 61 is an anchor. The corrugated plate member 1 having a thickness of 0.4 to 4.5 mm and the side edge member 2 having a thickness of 1.5 to 4.5 mm were prepared. Moreover, the metal groove lid of the same aspect was manufactured by using ordinary steel instead of stainless steel. When ordinary steel was used, after assembly, it was surface electrodeposited and galvanized.

(2) Example 2 In this example, the flat strip portion 11 of the metal groove lid A according to Example 1 is used.
A linear convex portion 42 is provided on the (FIGS. 5 to 7).
This is because the convex portion 42 has a function of preventing slippage. The convex portion 42 is formed by press molding together with the opening 41. In the press working process of making the plate-like body 4, the long holes 41 are opened at regular intervals, and at the same time, the anti-slip convex portions 42 are formed and arranged therebetween.

In FIGS. 5 and 6, each flat strip 11 has a convex portion.
The metal groove lid A in which the parts 42 are arranged at regular intervals is shown. Convex part 4
Except for 2, the corrugated plate-like member 1 and the side edge member 2 have the same shape as the metal groove lid A of the first embodiment. However, the edge member 3 is omitted in this embodiment. FIG. 7 shows the metal groove lid A in which the linear convex portions 42 are densely arranged at regular intervals. This is to further enhance the anti-slip effect.

(3) Third Embodiment In this embodiment, the corrugated plate member 1 is formed in a cock hat-shaped cross section as shown in FIGS. Slit-like gap 1
Since No. 2 rapidly expands downward, the pebbles and the like sandwiched in such a gap are more easily removed than the metal groove lid A of Examples 1 and 2. In addition, in the present embodiment, the strip-like shape of the second embodiment is used.
Instead of the convex portion 42, to form a pinpoint-shaped protrusions 42.

(4) Fourth Embodiment FIGS. 10 and 11 show another embodiment of the present invention. The corrugated plate member 1 relates to the metal groove cover A used for the arc-shaped side groove E.
Used the same as in Example 2. The inner side is narrowed into a fan shape, the side edge member 2a curved in an arc shape is fitted to the inner peripheral edge of the corrugated plate-shaped member 1, and the side edge curved in an arc shape having a larger radius of curvature is formed on the outer peripheral edge. Member 2b
Is fitted. The number of comb-teeth-shaped protrusions 21 and 22 formed on both side edge members 2a and 2b is the same. Therefore, the pitch formed by the protrusions 21 and 22 is determined by the outer peripheral side edge member 2b.
Is longer than that of the side edge member 2a.

(5) Effects of the Embodiment The metal groove cover A having the above-described embodiment has a repetitive pattern formed by roll forming with little manual work as in the conventional case, and is a groove of a rainwater gutter on a road. When used as a lid, it looked good and had a functional beauty. Moreover, it was light in weight and easy to manufacture. The rainwater flowing into the slit-shaped gap 12 flows downward, flows down from the opening 41, and is discharged into the gutter without difficulty. The slit-shaped gap 12 can be freely set by roll forming, and the opening size on the upper surface of the metal groove lid A can be set as desired. Therefore, depending on the place of use, it is possible to prevent the heel of the heel from entering and prevent the bicycle tire from being fitted. Even if the opening of the slit-shaped gap 12 becomes small, the opening ratio on the upper surface of the metal groove lid A can be kept constant by making the wave pitch P of the corrugated plate-shaped member 1 a little smaller, and the drainage becomes worse. It never happened. Since the width T of the slit-shaped gap 12 is widened downward, it is unlikely that pebbles, earth and sand, etc. will be clogged, and the slit-shaped gap 12 is less likely to be blocked and obstruct drainage. I was able to keep it good.

A load such as a pedestrian or an automobile is applied to the flat strip portion 11. However, since the corrugated plate-shaped member 1 has a corrugated shape and a large section modulus, a load is applied by the passage of the automobile or the like. However, there was little bending or deformation. In addition , the side edge members 2 project on both side edges of the corrugated plate member 1 in accordance with the wave pitch.
Since the raised portions 21 and 22 are fitted into each other so as to mesh with each other and have the function of retaining the corrugated shape of the corrugated plate-shaped member 1, deformation is unlikely to occur even under a large load. Thus, even if a relatively thin metal plate material is used, a product having excellent mechanical strength, durability, lightweight and easy to handle can be manufactured.

Further, there is no need to use electric pressure welding as in the prior art, and such a device is not necessary, and the corrugated plate member 1 and the side edge member 2 should be welded in places. Since the load is not directly applied to this welded portion, even if the weld is peeled off, it will not be damaged during use.
Therefore, the corrugated plate-shaped member 1 and the side edge member 2 do not have to be firmly connected, and fixing means other than welding can be adopted.

In Examples 2 to 4, the convex portion 42 formed on the flat strip 11 of the corrugated plate-shaped member 1 increases the coefficient of friction with the surface of shoes worn by pedestrians, so that it becomes a slip and slips. I was able to prevent a fall accident. In addition, in Example 4, since the corrugated plate-shaped member 1 can be bent into a fan shape having a free curvature when the arc-shaped metal groove cover A is manufactured, both side edge members 2a,
If only 2b is formed in a desired arc shape, a product suitable for the place of use can be easily manufactured. And, the quality of the finished product is much better than the conventional one which is mainly made by hand. For this reason, it has become possible to easily meet the demand for the production of such a metal groove lid that is excellent in terms of functionality in harmony with the surrounding landscape of buildings and the like. still,
Although not shown, other than the circular arc shape shown in the fourth embodiment, it was possible to easily cope with a meandering shape and other arbitrary shapes.

The present invention is not limited to those shown in the above embodiment, but can be variously modified within the scope of the present invention depending on the purpose and application. For example, the shape, size, material, etc. of the corrugated plate-shaped member 1 and the side edge member 2 can be made preferable depending on the application. The shape of the opening 41 may be a round hole shape, a cutout hole shape, or the like instead of the long hole shape. In this embodiment, the corrugated plate member 1 and the side edge member 2 are manufactured by press molding and roll molding, but the invention is not limited to such a molding method, and a general-purpose processing machine such as a turret punch press, a panel former, and a press brake is used. Etc. may be used. Corrugated plate member 1 as shown in FIG.
Can be made only by press molding. In addition, as an application, the plate thickness of the corrugated plate member 1 and the side edge member 2 is increased (plate thickness: 6 mm or more), and the plate is laid on the road surface of the ground surface during road construction such as subway (grating substitute product). ) Is also available.

[0023]

As described above, the metal groove cover according to the present invention is light and sturdy, and the size of the opening on the upper surface can be freely reduced by narrowing the slit-like gap while improving drainage. it can be Runode, walking, running
The safety is enhanced, and even a curved fan shape can be easily manufactured.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a metal groove lid according to a first embodiment.

FIG. 2 is a plan view of a plate-shaped body before being formed into a corrugated plate-shaped member by roll forming in FIG.

FIG. 3 is a cross-sectional view of the corrugated plate member in FIG.

FIG. 4 is a cross-sectional view in which the metal groove lid of Example 1 is placed on a rainwater gutter.

FIG. 5 is a plan view of the metal groove lid of the second embodiment.

6 is a sectional view taken along line XX of FIG.

FIG. 7 is a partially enlarged view of a metal groove lid having an uneven shape different from that of FIG. 5 in the second embodiment.

FIG. 8 is a cross-sectional view of a corrugated plate member according to a third embodiment.

9 is a perspective view of the corrugated plate member of FIG.

FIG. 10 is a plan view of a metal groove lid of Example 4.

FIG. 11 is an explanatory cross-sectional view in which the metal groove cover of FIG. 10 is placed in a side groove.

FIG. 12 is a cross-sectional view of another embodiment of a corrugated plate member.

FIG. 13 is a perspective view of a conventional grating.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Corrugated plate member 2 Side edge member 21 Protrusion 22 Protrusion 4 Plate-like body 41 Open hole A Metal groove lid P Wave pitch

Claims (1)

(57) [Claims] 1. A flat strip and a narrow slit on the upper surface.
Forming a gap, and the width of the slit-like gap is directed downward.
Bending the plate member in a wave shape so as to spread I, further, the
A corrugated plate member (1) having a constant width in which a plurality of openings provided in the plate member are arranged corresponding to the regions including the respective lower surfaces, and a substantially cross-section of the corrugated plate member.
A side edge member that is pumizo-shaped and has comb-teeth-shaped protrusions formed on opposed edges facing each other vertically and is fitted on both side edges of the corrugated plate member so that the protrusions mesh with each other according to the wave pitch.
(2, 2), The metal groove cover characterized by comprising.