JPH0158312B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a grid for gates, fences, handrails, etc.

Conventional technology Conventionally, in order to fix vertical bars of gates, fences, handrails, etc. to the rim, the vertical bars were welded to the rim, or the vertical bars were inserted into holes in the rim and fixed by welding or with auxiliary members. This method was frequently used.

Problems to be Solved by the Invention According to the conventional welding method, it takes a great deal of effort and advanced technology to fix all the upper and lower parts of a large number of longitudinal beams to the shell edge, and moreover, the welded parts are exposed. However, the method of using auxiliary members is time-consuming, and there are problems in terms of strength, such as rattling of the vertical beams.

Means for Solving the Problems The present invention aims to provide a new lattice body that eliminates the drawbacks of the conventional system, in which narrow portions B smaller than the diameter A of the cross section are formed at appropriate locations on the cross section.
A polygonal section having a width C larger than diameter A is formed in series with the crosspiece, an inclined section is provided between the crosspiece and the polygonal section, and the section is cut near the inclined section. It consists of a vertical bar and a rim in which a hole corresponding to the end shape of the vertical rim is formed, and the vertical bar is inserted into the hole in the rim, and the sloping part is press-fitted into the hole and fixed.

Function: By inserting the end of the vertical bar into the hole in the body rim and applying strong pressure, a diameter A or a wide portion with a length larger than the width or diameter of the hole with a shape corresponding to the end face shape of the vertical bar is formed. The inclined portion leading to C is press-fitted into the hole and fixed to the rim.

At this time, if the end face shape of the vertical crosspiece is polygonal, the slope from each face of the polygon to the circumferential surface of the crosspiece, and when the end face shape is circular, that is, the crosspiece, the crosspiece The inclined portions extending from the circumferential surface to the corner portions of the polygonal cross-sectional portion are each provided for press-fitting and fixing.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a vertical bar, and a narrow part B smaller than diameter A is placed at an appropriate location on a bar 2 made of a hollow metal tube and having a diameter of A. Then, a polygonal cross-sectional portion 3 having a wide width portion C larger than the diameter A is formed in series with the crosspiece 2 by press working or the like, so as to create a space between the crosspiece 2 and the narrow width portion B as well as between the crosspiece 2 and the wide width portion. Inclined portions 4, 4' extending in opposite directions are provided between C and C, and are cut near the inclined portions 4, 4'.

In the embodiment shown in the drawings, the polygonal section 3 has a square cross section, so to explain this in more detail, the diameter of the crosspiece 2 is A, and one side of the square cross section obtained by press working etc. is narrow. The width part B and the diagonal line are the wide part C. That is, B = 3.14/4A = 0.785A C = √2 × (0.785) ² = 1.11A The narrow part B and the wide part C have a difference from the diameter A, but they are formed in series. Therefore, from the crosspiece 2 to the narrow width part B, there is a downward slope 4 that gradually becomes planar, and from the crosspiece 2 to the wide width part C, there is an upward slope that gradually becomes a corner with a square cross section. 4' is formed.

Reference numeral 5 denotes a rim, and a hole 6 corresponding to the shape of the end face of the vertical bar 1 is formed on one side of the rim. This hole 6 is
When the end face shape of the frame member 2 is polygonal, the narrow width portion is approximately intermediate in length between the diameter A of the cross-section member 2 and the length of the narrow width portion B of the polygonal cross-sectional portion 3 (for example, 0.9A). If the hole is polygonal in shape, and if the end face shape of the vertical bar 1 is circular in cross section of the bar 2,
This hole has a diameter that is approximately halfway between the diameter A of the cross-sectional polygonal section 3 and the length of the wide width section C of the polygonal section 3 (for example, 1.05A).

7 is a notch provided on the periphery of the hole 6 when it is circular, and is provided corresponding to the corner of the polygonal cross-sectional portion 3, and the inclined portion 4' is inserted by press-fitting. be.

In the embodiment shown in the drawings, the cross-sectional polygonal portion 3 is square, but it may be any other polygonal shape, in which case the above numerical values will be different, and the shape of the hole 6 in the rim 5 will naturally also correspond. and change. Further, the vertical bar 1 may be a solid bar material with a series of polygonal sections 3 formed therein. Further, although the explanation has been made using the vertical bars 1 and the furring 5, it is also possible to fix both horizontal bars and vertical frames in the same way.

Effects of the Invention The present invention is constructed as described above, and the vertical beam 1 and the furring 5 are simply inserted into the hole 6 and pressed, so that the inclined portions 4, 4' are press-fitted into the hole 6 and fixed. Something,
To provide a beautiful lattice body in which a large number of vertical bars 1 arranged in parallel can be fixed to a furring 5 at both ends at the same time, extremely easily and quickly without any special technique and without fear of damage or deformation. is obtained.

In addition, since the inclined parts 4, 4' are press-fitted into the holes 6, the vertical beams 1 can be securely fixed without wobbling, and a strong lattice body can be constructed.

Furthermore, when the crosspiece 2 is a metal hollow tube, the polygonal cross-sectional portion 3 can be easily obtained by press working, and the overall lattice body can be provided at low cost.

As described above, the present invention completely eliminates the need for advanced technology such as welding and troublesome labor, and can be constructed using simple processes, making it a useful invention suitable for mass production.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIGS. 1A and 2B are partial perspective views of vertical bars at different angles, and FIGS. 2 and 3 show cases in which the vertical bars end faces are polygonal.
The figure is a front view, Figure 3 is an exploded perspective view of the main part, Figures 4 and 5 are the case where the vertical beam end face is circular, Figure 4 is a front view, and Figure 5 is an exploded perspective view of the main part. Figure, 6th
Figures A and B are cross-sectional views of the vertical beam. 1 is a vertical bar, 2 is a bar material, 3 is a polygonal section,
4 and 4' are inclined parts, 5 is a furring edge, 6 is a hole, A is a diameter of a crosspiece, B is a narrow part of a polygonal cross-sectional part, and C is a wide part.

Claims (1)

[Scope of Claims] 1. A polygonal cross-sectional portion 3 having a narrow portion B smaller than the diameter A of the cross section 2 and a wide portion C larger than the diameter A of the cross section 2 is placed at an appropriate location on the cross section 2 exhibiting a circular cross section. A vertical bar 1 is formed in series with a vertical bar 2, provided with inclined parts 4, 4' between the bar 2 and the polygonal section 3, and cut near the inclined parts 4, 4'. 1, a vertical frame 1 is inserted into the hole 6 of the flap 5, and the sloped parts 4, 4' are press-fitted into the hole 6 and fixed. Lattice on fences or handrails, etc. 2. A lattice body for a gate, fence, handrail, etc. according to claim 1, wherein the crosspiece 2 is a metal hollow tube.