JPS6231496Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a grid-like grating used as a gutter cover for road side ditches, cross ditches, etc.

Conventionally, when this type of grating is used as a gutter cover, it is common to install a series of gratings manufactured to a length of about 1 m, but when a vehicle passes over the grating, it causes looseness. Attached,
To prevent gratings from moving and creating gaps, gratings have been fixed directly or indirectly to the receiving frame using bolts, nuts, etc., or adjacent gratings have been connected using connecting fittings. In other words, the connection fittings include contact prevention fittings that serve both to connect the groove covers and fix them to the receiving frame, as seen in Japanese Utility Model Application Publication No. 56-134981, and connection fittings as seen in Japanese Utility Model Application Publication No. 56-13194. However, all of them connect adjacent groove covers by clipping them from the top surface of the grating, and they have the drawbacks of protruding from the grating surface and being easily removed. There is a grating with a retainer disclosed in Japanese Utility Model Application Publication No. 57-4476, but a flat plate-shaped retainer piece is also welded to the top surface, and the retainer pieces fit into adjacent gratings and are difficult to come off. However, since they are not connected, there is a risk of the grating coming off if there is a gap larger than the retaining piece between adjacent gratings.As with the connecting fittings above, the retaining piece protrudes from the grating surface, making it easy to trip over. There are some shortcomings.

For this reason, there is a need for a grating that has a simple structure, is not easily detachable, and is equipped with a device that can be connected.As a result of various studies, the present invention was developed.

The present invention will be described with reference to the embodiments shown in the drawings. As shown in FIGS. 3 to 6, a rectangular shaped piece 1 having a rectangular shape when viewed from the side, or a rectangular shaped piece 1 and a rectangular flat plate 2. The first and second locking fittings 3 are
As shown in the figure, a locking metal fitting is provided that protrudes from the lower surface of the side plate 5 of the grating 4 so as to contact the lower surface of the side plate 5' of the adjacent grating 4', and similarly protrudes from the lower surface of the adjacent grating 4'. 3' and the bent pieces 6, 1' of the L-shaped pieces 1,
6' is positioned upward, and the folded pieces 6, 6' are attached so that their washed ends are engaged with the side plates 5', 5 of adjacent gratings 4', 4.

Incidentally, the gratings 4, 4' are generally manufactured by assembling vertical strips a and horizontal strips b in a lattice shape by welding, etc., as shown in Fig. 1, and welding side plates c to both end surfaces of the vertical strips a. Usually, the vertical strips located at both ends also serve as side plates 5. As shown in Figure 2, the vertical strip a is made of I-shaped steel whose upper and lower parts are wider than the center, but flat plate steel or T-shaped steel whose upper part is wider are also used. In addition, the side plates 5 may also be made of flat plate steel, but are not limited to these grating configurations.

Further, the L-shaped piece 1 is formed by bending a flat plate as shown in Figs. 1 and 2, by cutting a flat plate and shortening one piece as shown in Figs. As shown in the figure, any one may be used, in which a U-shaped cut is made in a flat plate and a tongue-shaped bent piece is formed. Integrally molded locking metal fitting 3
There is no problem in forming a

Since the present invention is constructed in a similar manner, when the gratings are connected, the locking fittings 3 are engaged with each other, so each grating does not move independently in the groove width direction, and can be moved in the vertical direction. Since the locking metal fitting 3 and the lower surface of the grating are in contact with each other, they do not move independently in the same way, and furthermore, in the flow direction of the groove, the tip of the curved piece 6 of the L-shaped piece 1 of the locking metal fitting 3 is in contact with the side plate of the grating. 5, it will not move independently, eliminating the risk of rattling or creating gaps between the gratings.

Note that if the tip of the locking metal fitting 3 is slightly bent downward, the tip of the locking metal fitting 3 can be smoothly engaged without hitting the lower end of the side plate 5 when connecting the gratings. When connecting the gratings, if the gratings are connected in a rectangular shape, the force exerted by the side plate 5 on the tip of the bent piece 6 will be reduced, and the grating can easily fit into the underside of the grating and connect. It is. Further, it is preferable that the L-shaped piece 1 of the locking fitting 3 is made of elastic steel, but if it is made of ordinary steel and the tip of the bent piece 6 slightly protrudes upward, the steel material itself will hold its own. Due to its slight elasticity, it can be connected without any problem.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a partial perspective view showing a state where a locking fitting is attached to the end of a grating, FIG. 2 is a partially enlarged sectional view showing a connection state, and FIG. , 4 are perspective views of different locking fittings, and FIGS. 5 and 6 are perspective views of L-shaped pieces of locking fittings of other embodiments. DESCRIPTION OF SYMBOLS 1...R-shaped piece, 2...Rectangular flat plate, 3...Lock fitting, 4, 4'...Grating, 5, 5'...
...Side plate, 6,6'...Bend piece.

Claims (1)

[Scope of utility model registration request] A rectangle-shaped piece 1 having a rectangular shape when viewed from the side;
Alternatively, a locking fitting 3 consisting of a rectangular piece 1 and a flat strip 2 is provided to protrude from the lower surface of the side plate 5 of the grating 4 so as to touch the lower surface of the side plate 5' of the adjacent grating 4', and The bent pieces 6 of the L-shaped piece 1 are engaged with the locking fittings 3' protruding from the lower surface of the side plate 5' of 4'.
The grating is characterized in that the gratings 6' are positioned upwardly and are attached to the side plates 5', 5 of the adjacent gratings 4', 4, respectively.