JPS5924058A - 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 The present invention relates to a grating used for outdoor gutter covers, indoor floor ventilation, lighting, etc.

In conventional gratings, the cross plates and connecting rods are attached by welding, or by caulking the connecting rod screen.In both cases, the cross plates and connecting rods are assembled at the factory, and the cross plates and connecting rods are assembled on-site. There is no type of device that allows the connecting rod to be easily assembled.The present invention takes into account the shape or material of the connecting rod insertion hole of the cross plate and the connecting rod assembly part, and attaches the cross plate and the connecting rod using a simple press-fitting method. This is a convenient grating that has been designed to be firmly assembled and fixed, making it suitable for both factory and field assembly. Its structural features are that the cross plate has a plurality of irregularly shaped holes in which a wide hole that allows the connecting rod to be easily inserted and a narrow hole that allows the connecting rod to be press-fitted are continuous; This is because a connecting rod having the above correlation is inserted into a wide hole, and then press-fitted and fixed into a narrow hole while regulating the internuclear space.

The present invention will be specifically described below with reference to the drawings.

Figure 1 is an overall perspective view of the grating after assembly has been completed, and it is the same as before that it is assembled in a lattice shape with a plurality of crosspieces (1) and a plurality of connecting rods (2). The present invention is a simple press-fit assembly, and because of its unique structure, a strong fixation is guaranteed that will not cause the press-fit portion to return and loosen.

FIG. 2 is a side view of the crosspiece plate (1), in which a plurality of irregularly shaped holes (3) are bored at predetermined intervals on the side surface of the crosspiece plate. The irregularly shaped hole (3) consists of a wide hole part (3&) into which the connecting rod (2) can be easily inserted, and a narrow hole part (6b) into which the connecting rod (2) can be press-fitted, and in the example shown, it has a keyhole shape. It has a similar shape. It is convenient for assembly if the longitudinal direction of the irregularly shaped hole (3) is parallel to the longitudinal direction of the crosspiece (1) as shown in the figure, or parallel to the width direction. Also,
By arranging the relative positions of the irregularly shaped holes (3) in a staggered manner, the effect of preventing horizontal wobbling of the crosspiece (1) is further improved.

Figure 2 is an explanatory plan view of the process of assembling the grating, in which the crosspieces (1) shown in Figure 2 are arranged one by one with the front and back sides turned upside down, and their wide hole parts (3a) are connected together. The rod (2) is shown being inserted. Adjust the spacing between the crosspieces (1) and hit the crosspieces (1) alternately from the direction of the arrow in the figure with a hammer or the like, or press them all at once with a pressure plate from the left and right sides, and the connecting rod (2) will open into the irregularly shaped hole (3). ) is pressed into the narrow hole part (3b) and firmly fixed.

In this case, since the crosspieces (1) are alternately turned upside down, the connecting rod pressed into the narrow hole portion (3b) will not move in either the left or right direction.8 Figures 4 and 5 FIG. 1 is a sectional view taken along line AA and line BB in FIG. 1, showing an assembled and press-fitted state.

The thickness of the press-fitting portion of the connecting rod (2) is such that it can be press-fitted within the width of the narrow hole portion (3b) of the irregularly shaped hole (3), and any of a round rod, a square rod, and a rod with an irregular cross section can be used. Although the press-fitted portion of the connecting rod (2) does not require any processing, forming grooves as shown in FIGS. 6 to 8 will prevent the crosspiece from slipping. Figure 6 shows a square bar with a groove (4) on one side;
Figure 7 shows a round bar with double-sided grooves (4) (4), and Figure 8 shows a tip bar with grooves (5) all around the circumference.

In addition, if the materials of the crosspiece (1) and the connecting rod (2) are changed, and materials with particularly different hardness are selected, such as iron and aluminum alloy, the connecting rod (2) can be inserted into the narrow hole portion (3b).
), the press-fitted portion of the connecting rod undergoes some plastic deformation, resulting in even stronger fixation.

As the grating of the present invention has the above-described structure, a number of excellent effects listed below can be obtained.

1) As it can be assembled by simply press-fitting, it is extremely easy to assemble, and it can be assembled not only in a factory but also on-site, making it easy to transport and handle.

2) Since it is a press-fit structure, there is no looseness that can occur with conventional caulking structures, and it is firmly fixed and does not make unpleasant noises when walking.

3) It is possible to freely select combinations of different materials that cannot be used with welding assembly, or which could not be used conventionally due to problems with the strength of the caulked part with caulking assembly, and it is possible to use different materials for cross plates and connecting rods. By making full use of its characteristics, it can respond to product diversification such as weight reduction, colored designs, and cost reduction.

[Brief explanation of drawings]

Fig. 1 is an overall perspective view, Fig. 2 is a side view of the crosspiece, Fig. 3 is a plan view of the assembly in progress, Fig. 4 is a sectional view taken along line A-A in Fig. 1,
FIG. 5 is a sectional view taken along the line BB, and FIGS. 6 to 8 are partial perspective views of the connecting rod. (1) Cross plate (2) Connecting rod (3) Irregular hole
(3a) Wide hole part (3b) Narrow hole part
(4) Groove (5) All-around purchase Applicant: OEM Industries Co., Ltd. Agent Patent attorney Mori Hirozobe A-/' Kuzu 2, Figure 3, Akira 4, Kasumiro, 5, Figure 6, Figure 128'.

Claims (1)

[Claims] 1. In a grating formed entirely in a lattice shape from a plurality of cross plates and a plurality of connecting rods, the cross plate has a wide hole portion into which the connecting rods can be easily inserted, and the connecting rods can be press-fitted. A grating made by drilling a plurality of irregularly shaped holes in which a relatively narrow hole part is continuous, and inserting a connecting rod having the above correlation with the irregularly shaped hole into the wide hole part, and then press-fitting and fixing it into the narrow hole part. 2. The grating according to claim 1, wherein the portion of the connecting rod that is press-fitted into the crosspiece plate is a groove. 3. The grating according to claim 1, wherein the portion of the connecting rod that is press-fitted into the cross plate is made of a material with a hardness different from that of the cross plate.