JPS63297653A - Grating - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a grating used for covering drains, covering openings in the floor of buildings, etc. relates to a grating constructed by arranging a plurality of elongated plate members.

[Prior Art] Gratings that allow water to pass through are generally used as covers for openings in drains of roads, sidewalks, etc., floors of buildings, etc. Conventionally, gratings made of cast iron have been used, but recently, gratings made of pressed metal plates combined with long metal plates have been increasingly used. Such press-made gratings have advantages such as being lightweight, having high strength, and having a good appearance.

This kind of grating has a large number of elongated plate-shaped so-called bearing bars arranged at predetermined intervals to receive the load, and a so-called cross bar is provided passing through these bearing bars. It is configured to integrally connect the above-mentioned bearing bars and to prevent these bearing bars from falling down.

In the conventional bearing bar, insertion holes are formed in the bearing bar, cross bars are inserted into these holes, and then the cross bar and the bearing par are welded at the through holes.

For this reason, there are many welding points, which makes manufacturing inefficient, and there are also problems such as an unsightly appearance due to the large number of welding points.

[Problems to be Solved by the Invention] The present invention has been made based on the above-mentioned circumstances.The present invention has been made based on the above-mentioned circumstances. Our goal is to provide grating.

[Means for solving the problems and their effects] The present invention has the following features:
A non-circular insertion hole is formed in the bearing par, and the cross bar has a non-circular cross section that can be inserted into the above-mentioned insertion hole, and a fitting notch is formed in the cross bar. - is inserted into the insertion hole, the crossbar is rotated, and the fitting notch is fitted into the edge of the insertion hole. Therefore, the crossbar and the bearing par can be easily connected without using welding, and the manufacturing thereof is easy and efficient, and since no welding is used, the appearance is good.

[Example〕 Hereinafter, the present invention will be described in detail with reference to the drawings.

1 to 4 show a first embodiment of the present invention.

1 in the figure is a frame member. This frame member 1 is made of an elongated stainless steel material and has a rectangular shape. Inside this frame member 1, a large number of bearing pars 2 are arranged parallel to each other at predetermined intervals. These bearing pars 2 are composed of long and narrow stainless steel plates,
It is arranged so that its surface direction is vertical. For example, two cross bars 3 are provided passing through these bearing pars 2, and these cross bars 3 integrally connect each of the bearing pars 2 to each other, and these bearing pars 2 It is configured to support the load in the direction of the collapse. Note that the ends of the bearing par 2 and the cross bar 3 are welded to the frame member 1, respectively.

The connection structure of the penetrating portion between the bearing par 2 and the cross bar 3 is constructed as shown in FIGS. 3 and 4. That is, in the above bearing par 2,
An insertion hole 4 through which the cross bar 3 described above is inserted is formed. The shape of the insertion hole 4 is non-circular, for example square, and the sides thereof are inclined at about 45 degrees.

Further, the cross-sectional shape of the cross bar 3 is the same as that of the insertion hole 4.
It has a shape corresponding to , that is, a square, and is formed to be slightly smaller than the dimensions of the above-mentioned insertion hole 4, so that it can be inserted freely into the insertion hole 4. In the case of this embodiment, a square vibrator made of stainless steel is used as the cross bar 3. Fitting notches 5 are formed at each corner of the cross bar 3 at intervals corresponding to the arrangement interval of the bearing pars 2 described above.

After this cross bar 3 is inserted into the above-mentioned insertion hole 4, it is rotated about 45 degrees around its vertical axis as shown in FIG. 4, and as a result of this rotation, this cross bar 3 is The fitting notch 5 fits into the edge of the insertion hole 4, so that the cross bar 3 and the bearing par 2 are integrally connected.

Such a device involves inserting the cross bar 3 into the insertion hole 4 of the bearing par 2, and simply rotating the cross bar 3 with an appropriate tool can simultaneously connect the bearing par 2 and the cross bar 3. This makes the production of such gratings efficient and easy, and the absence of welding provides a good appearance.

Further, FIG. 5 does not show the second embodiment of the present invention.

This one has an insertion hole 14 formed in the bearing par 2.
has an elliptical shape, and the cross-sectional shape of the cross bar 13 is also formed in an elliptical shape corresponding to the shape of the insertion hole 14.

Fitting slits 15 are formed in the long axis direction of the cross-section of the cross bar 13 at intervals corresponding to the arrangement intervals of the bearing pars 2 described above. After the cross bar 13 is inserted into the insertion hole 14, it is rotated about 90'', and the European fitting slit 15 fits into the edge of the insertion hole 14, as shown in FIG. .

It should be noted that the present invention is not limited to each of the above-described embodiments, and as the cross bar rotates, a fitting notch formed in the cross bar fits into an edge of an insertion hole formed in the bearing bar. Any structure other than the above-mentioned embodiments may be used as long as the structure is different.

Further, a backing made of synthetic rubber or the like may be interposed at the fitting portion between the bearing bar and the cross bar, and in this way, play between the bearing bar and the cross bar can be prevented.

[Effects of the Invention] As described above, in the present invention, the cross bar is inserted into the insertion hole formed in the bearing bar, and then the cross bar is rotated, and the fitting notch formed in the cross bar is inserted into the bearing bar. It fits into the edge of the insertion hole formed in the bar. Therefore, a large number of bearing bars can be connected to the cross bar at the same time, manufacturing is efficient and easy, and since no welding is required, the appearance is good, which has great effects.

[Brief explanation of the drawing]

1 to 4 show a first embodiment of the present invention, FIG. 1 is a plan view, FIG. 2 is a cross-sectional view taken along the line ■-■ in FIG. 1, and FIG. 3 is a main part. An exploded perspective view showing the structure, and FIG. 4 is a sectional view of the main parts. Moreover, FIG. 5 is a sectional view of the main part of the second embodiment. DESCRIPTION OF SYMBOLS 1... Frame member, 2... Bearing bar, 3... Cross bar 14... Insertion hole, 5... Fitting notch part,
13... Crossbar 115... Fitting notch portion Applicant's representative Patent attorney Takehiko Suzue Figure 1 Figure 2 Figure 4

Claims (1)

[Claims] A device comprising a plurality of elongated plate-shaped bearing bars and a cross bar that passes through these bearing bars and connects these bearing bars, wherein a non-circular insertion hole is formed in the bearing bar, and the above-mentioned The cross bar has a non-circular cross-sectional shape that can be inserted into the insertion hole, and fitting notches are formed in the cross bar at intervals corresponding to the arrangement interval of the bearing bars,
A grating characterized in that the cross bar is inserted into the insertion hole, and then the cross bar is rotated around its axis to fit the fitting notch into the edge of the insertion hole. .