JPH07268941A - Connecting device of grating - Google Patents

Abstract

PURPOSE:To easily perform the connection of gratings provided on the upper end of a drainage ditch without requiring any skill. CONSTITUTION:A connecting metal fitting 7 energized on one grating 1 side of a adjacent gratings 1, 1 provided on the upper end of a drainage ditch 2 by a coil spring 11 is provided near the lower end of a main bar 4 situated on the end part of the one grating 1. The connecting metal fitting 7 has an engaging piece 10 engaged with the lower end inside of the main bar 4 situated on the end part of the other grating 1 on the end part. After the main bar 4 situated on the end part of the other grating 1 is put on the connecting metal fitting 7, the hand is separated, where by the connecting metal fitting 7 is moved by the energizing force of the coil spring 11 to engage the engaging piece of the connecting metal fitting 7 with the lower end inside of the main bar 4 situated on the end part of the other grating 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grating connecting device provided as a lid for covering the upper end of a drainage groove inside or outside a building.

[0002]

2. Description of the Related Art Conventionally, a grating which is laid as a cover for covering the upper end of a drain groove depends on the length of the drain groove, but usually a plurality of grooves are used for one drain groove. To prevent the floating of the grating from the
It is the current situation that adjacent gratings are connected by bolts and nuts.

However, in the work of connecting adjacent gratings with, for example, bolts and nuts, the main bars, which are the constituent materials of the gratings located at the ends, are brought close to each other, the bolts are inserted into both main bars, and the nuts are attached to the bolts. Although it is carried out by screwing, it is difficult to insert the bolt into the main bar and screw the nut into the bolt in a narrow space inside the main bar, and there is a problem that skill is required. In addition, the bolts and nuts must be attached and detached every time maintenance such as cleaning of the drainage groove is performed, which causes a problem that the maintenance is very troublesome.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object thereof is to make it possible to easily connect gratings provided at the upper ends of drainage grooves without requiring skill. It is a thing.

[0005]

In order to solve this problem, according to the present invention, one grating end of one adjacent grating provided at the upper end of the drain groove is engaged with the inside of the lower end of the other grating end. The connecting metal fitting is provided with the engaging piece.

[0006]

With this structure, the play between adjacent gratings is eliminated by engaging the engaging pieces of the connecting metal fittings provided at the ends of one grating of the adjacent gratings with the insides of the lower ends of the ends of the other gratings. , The grating can be firmly attached to the drain.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 4, reference numeral 1 is a grating in which both sides along the length direction are placed on a receiving portion 3 formed near the upper end of the inner surface along the length direction of the drainage groove 2, and is made of metal such as stainless steel or iron. Is made. More specifically, the grating 1 includes a large number of main bars 4 arranged in parallel with each other at equal intervals and connected by cross bars 5 orthogonal to the main bars 4, and frame members on both sides along the length direction. 6 is attached.

Although the grating 1 depends on the length of the drainage groove 2, a plurality of pieces are often used for one drainage groove 2, and the connecting metal fitting 7 is provided between adjacent gratings 1 and 1.
Are connected by.

The connecting fittings 7 are made of metal such as stainless steel or iron, and the main bars 4 are located at a plurality of positions in the longitudinal direction of the main bar 4 located at the end of one of the adjacent gratings 1, 1. It is fitted in a horizontal through hole 8 formed in the vicinity of the lower end so as to be able to move far and far with respect to the other adjacent grating 1, and one end and the other end protruding from the through hole 8 face upward. Engaging pieces 9 and 10 that project to the front are provided. A connecting fitting 7 is located at the end between the engaging piece 9 on one end side located inside the main bar 4 located at the end of one grating 1 and the main bar 4 located at the end. A coil spring 11 is interposed to urge the main bar 4 in the pulling direction. Reference numeral 12 denotes a shaft provided on the engaging piece 9 on one end side for supporting the coil spring 11. One end of this shaft 12 is inserted into a hole 13 formed on the engaging piece 9 on the one end side.
In this way, the main bar 4 located at the end of the other grating 1 is close to the one grating 1 to which the connecting metal fitting 7 is attached, and the lower end of the main bar 4 projects from the through hole 8. The fitting piece 10 on the other end side of the coupling fitting 7 is adapted to be engaged with the inside of the lower end of the main bar 4 located on the other end side of the fitting 7 and located at the end of the other grating 1. When the main bar 4 located at the end of the other grating 1 is placed on the other end side of the connecting metal fitting 7, the other grating 1 is lifted by the connecting metal fitting 7. Therefore, in order to eliminate it, the other grating 1 is removed. The lower end of the main bar 4 located at one end is cut off so as to be located above the lower ends of the other main bars 4. This cutting may be performed over the entire length in the length direction of the main bar 4 located at the end of the other grating 1. Alternatively, it may be made at least at the mounting position of the connecting fitting 7.

In the above structure, when the grating 1 is laid on the upper end of the drainage groove 2, the gratings 1 are laid one by one on the receiving portion 3 near the upper end of the drainage groove 2. that time,
At the end of the grating 1 located at the end of the drainage groove 2, the connecting metal fitting 7 is not provided, and the adjacent gratings 1 and 1 are provided.
The spaces are connected by the connecting fitting 7. Specifically, the gratings 1 are laid one by one from the ends of the drainage grooves 2, and the connecting metal fittings 7 attached to the main bars 4 located at the ends of the grating 1 are applied to the coil spring 11 with the finger or the like. On the other hand, the engaging piece 10 on the other end side is pushed out so as to protrude largely outward from the through hole 8, and the main bar 4 located at the end of the other grating 1 is connected to the other end of the connecting fitting 7. Put on the side. In this state, by releasing the hand from the connecting metal fitting 7, the connecting metal fitting 7 is moved by the urging force of the coil spring 11 in the direction of being pulled toward the main bar 4 located at the end of the one grating 1, and The engaging piece 10 on the other end side engages with the inside of the lower end of the main bar 4 located at the end of the other grating 1, and the main bar 4 located at the end of one of the adjacent gratings 1 and 1. The end of the crossbar 5 projecting from the end and the end of the crossbar 5 projecting from the main bar 4 located at the end of the other grating 1 abut each other. This operation is performed while laying the gratings 1 one by one.

By the way, in the above embodiment, the connecting fitting 7 is biased toward the one grating 1 side by the biasing force of the coil spring 11. However, one end side of the connecting fitting 7 is located at the end of the one grating 1. When fixed to the main bar 4, the main bar 4 located at the end of one grating 1 is brought closer to the main bar 4 located at the end of the other grating 1 The main bar located at the end of the other grating 1 You may make it provide the engaging piece which connects and engages inside the lower end of 4 at the other end side of the connection metal fitting 7.

[0012]

As described above, according to the present invention, the engaging piece of the connecting fitting provided at one end of one grating of the adjacent gratings is engaged with the inside of the lower end of the end of the other grating. The play between adjacent gratings can be eliminated and the grating can be firmly attached to the drain. This work is easier and requires less skill than the conventional work of inserting the bolts into the main bar in a narrow space inside the main bar and screwing the nuts onto the bolts. The workability can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view of a grating and a connecting fitting according to an embodiment of the present invention.

FIG. 2 is a front cross-sectional view showing a state in which the other grating is mounted on the same metal fitting of grating.

FIG. 3 is a front cross-sectional view showing a state where adjacent gratings are connected by a connecting fitting.

FIG. 4 is a plan view showing a state where adjacent gratings are connected by a connecting fitting.

[Explanation of symbols]

 1 Grating 2 Drain groove 3 Receiving part 4 Main bar 7 Connecting metal fitting 8 Through hole 9,10 Engaging piece 11 Coil spring

Claims (1)

[Claims] 1. A coupling fitting having an engaging piece that engages with the inside of the lower end of the end of the other grating is provided at the end of one of the adjacent gratings provided at the upper end of the drainage groove. Characteristic grating connecting device.