JPS649806B2 - - Google Patents

Description

[Detailed description of the invention] The switchboard is called a mosaic panel, and as shown in Figure 2, necessary instruments are arranged and stored in the squares B of the panel frame A, which is integrally constructed in a vertical and horizontal grid pattern, as shown in Fig. 2. In many cases, plastic or metal tiles are attached to the other surface of the channel to form a panel surface.

As a means of constructing an integrated panel frame, a large number of hollow blocks 1 formed in a rectangular tube shape as shown in Fig. 2 are connected to each other, called a cut-free type, to create a free shape, for example, to accommodate the instruments to be used. Hollow blocks of different sizes are connected together, or some hollow blocks are omitted.

As a method of mechanically connecting the hollow blocks 1 and 1, a washer having a hook is interposed, and a bolt is used.
Can be joined with nuts.

However, when connecting a large number of hollow blocks with bolts and nuts, it is difficult to assemble a grid-like panel frame accurately due to dimensional errors of the hollow blocks themselves, errors due to placement during assembly, errors due to deformation during screw tightening, etc. It has the disadvantage that it is difficult and requires a lot of effort.

In view of these points, the present invention has devised a method for assembling a panel frame by accurately and efficiently connecting square cylindrical hollow blocks.

Hereinafter, the method of the present invention will be explained based on the accompanying drawings.

In the present invention, the hollow block refers to a rectangular frame made of metal or plastic, as shown in Fig. 2, and the four corners of the block are cut by a predetermined depth l over a certain width w from both the front and back sides. 2 is provided.

In addition, the remaining portions 3 of the front and rear notches 2, 2 are provided with notch surfaces 4 by recessing the ridgeline portions in an arc shape, and when the four hollow blocks 1 are arranged adjacent to each other, as shown in FIG. As shown, cross-shaped recesses a are formed in two places in the front and back by the cuts 2 of the adjacent hollow blocks, and a cavity b is formed in the part surrounded by the notch surfaces 4 and 4 that penetrates in the front and back. It is designed so that it will be done.

In order to connect the plurality of hollow blocks 1, 1, a connecting bolt 5 having a substantially cross-shaped head 5a is used.
This can be done by using a nut screwed into the threaded portion 5b.

That is, as can be seen from FIGS. 4 and 6, the connecting bolt 5 is inserted into the cavity b formed at the corner when the hollow blocks 1 and 1 are arranged, and its head 5a is inserted into the recess on the back side. The nut 6 is inserted into the recess a on the front side and screwed onto the threaded portion 5b of the bolt 5.

In addition, for this fixing, between the hollow block 1 and the connecting bolt 5, and between the hollow block 1 and the nut 6, a claw washer 7 having four hooking claws 7a with an interval of 90 degrees is fitted so as to face each other. When the hooks 7a are respectively engaged with the four hollow blocks 1, 1 and the nuts 6 are tightened from above, the adjacent hollow blocks are firmly connected to each other.

A cross-shaped square washer 8 is placed between the nut 6 and the claw washer 7.
It is even more effective if it is interposed.

The cross-shaped head 5a of the connecting bolt 5 has a width W equal to 2 of the width w of the notch 2 of the hollow block.
It is better to double the size and fit into the recess a without any gaps.

The height H of the head 5a is the depth l of the cut 2.
It is made larger than. Further, a screw hole 9 is drilled and a stud bolt C is connected using the screw hole 9 so that the panel frame A can be easily fixed to the fixed frame D.

The hollow blocks 1, 1 can be efficiently connected using connecting bolts, and the panel frame A can be assembled efficiently by using the workbench 10, which is a dedicated jig. (Fig. 7, Fig. 8) The planar workbench has a predetermined interval X', which corresponds to the dimensions X and Y of the hollow block used for assembly.
Fitting holes 11, 11 are arranged vertically and horizontally for each Y'(X=X',Y=Y').

This fitting hole 11 is made, for example, into a square whose side has a width W' that is approximately equal to or slightly larger than the width W of the bolt head 5a (W'≧W), and the bolt 5 is overturned to fit the head 5a. Therefore, the bolt 5 can be held upright without rotating accidentally. That is, the fitting hole 11 has the same or arbitrary shape as the planar shape of the head 5a of the bolt 5, and has a shape into which at least the head fits and does not move accidentally.

The depth d is shallower than the amount z of the bolt head 5a protruding rearward from the panel frame (d≦z).

When assembling the panel frame A, first, as shown in FIGS. 7 and 8, the fitting holes 11 on the workbench 10,
11, the connecting bolt 5 is fallen into the fitting hole in the range corresponding to the size of the desired panel frame, and its head 5a is inserted and established.

Then, the pawl washer 7 is inserted into the bolt 5 with the hook 7a facing upward from the threaded portion 5b.

Next, the hollow blocks 1, 1 are arranged on the workbench 10. That is, the hollow blocks 1 are arranged so that the cutout surfaces 4 at the corner portions face the bolts, and the hooks 7a of the claw washers 7 inserted in advance are engaged with the corner portions of each hollow block.

Continuing this operation in all directions, fit another pawl washer 7 from the threaded portion 5b into the bolt 5 where the corner portions of the four hollow blocks are butted, and insert the hook 7a into the corner of the hollow block in the same manner as the previous pawl washer. By engaging the parts, inserting the square washers 8, screwing together the nuts 6, and tightening them, a grid-shaped panel frame can be assembled accurately and efficiently.

In addition, as shown in FIG. 9, the bolt head 5a
If the hook 7a of the claw washer 7 is set in advance in a predetermined direction on the bottom surface and bonded with adhesive or the like to make it integral, the claw washer will not rotate unexpectedly when placing the hollow block 1, making it more efficient. .

Although the hollow block 1 is manufactured in the form of a very precise rectangular frame, at least some dimensional errors occur. Furthermore, during assembly, there will be looseness within the range of the difference in inner diameter between the bolt 5 and the space b into which it is inserted. Therefore, if the parts are assembled freely without using the method of the present invention, the above-mentioned errors will appear as a synergistic effect, making it difficult to assemble them in an accurate checkerboard shape. Furthermore, when tightening the nuts, a rotational force F was applied to each hollow block as shown by the arrows in Figure 5, causing the rectangular frame to become distorted.

However, according to the method of the present invention, the bolt connection portion, which is the intersection of the squares of the panel frame,
It has the advantage that the panel frame A can always be accurately assembled by being regulated by the fitting holes 11.

Even if the hollow block itself has dimensional variations, this dimensional error will be absorbed by the gap between the inner diameter of space b and the bolt outer diameter, and will not affect the arrangement of the next hollow block. do not have. In other words, a larger dimensional error can be tolerated than in the case not using the method of the present invention.

Furthermore, the greatest feature of the method of the present invention is that anyone can assemble the panel frame extremely efficiently without requiring any skill.

[Brief explanation of drawings]

The attached drawings are for explaining the panel frame assembly method for the cut-free mosaic panel of the present invention. Figure 1 is a front view of only a part of the panel frame in which hollow blocks are mechanically connected, and Figure 2 is a front view of only a part of the panel frame in which hollow blocks are mechanically connected. FIG. 3 is a front view of the corner portion showing the state before the hollow blocks are connected, FIG. 4 is an exploded perspective view showing the connection mechanism of the hollow blocks, and FIG.
The figure is a front view of the connecting part of the hollow block, Figure 6 is a cross-sectional view taken along the - line in Figure 5, Figure 7 is a plan view of only a portion of the assembly workbench, and Figure 8 is a longitudinal cross-section showing the assembly process. FIG. 9 is a perspective view showing a modified example of the connecting bolt. 1...Hollow block, 2...Notch, 4...Notch surface, 5...Bolt, 5a...Head, 5b...Screw part, 6...Nut, 7...Claw washer, 7a...Latching claw , 8... corner washer, 10... workbench, 11... fitting hole, a... recess, b... void, A... panel frame.

Claims (1)

[Scope of Claims] 1. In the corner portion of the hollow block 1, a notch 2 is provided at a predetermined depth from both the front and back sides over a certain width w, and the remaining ridgeline portion is provided with a notch surface 4, and a plurality of notches 2 are provided in the corner portion of the hollow block 1. When the hollow blocks 1 and 1 are combined, connecting bolts 5 are inserted into the two recesses a in the front and back formed by the cuts 2 in the adjacent hollow blocks.
and the threaded portion 5 of the bolt 5 into the space b formed by the notch surface 4.
The dimensions of the hollow block 1 are as follows: A flat workbench having fitting holes 11 into which the heads 5a of bolts 5 can be fitted without moving unnecessarily at predetermined intervals corresponding to X and Y is used, and the size of the panel frame on the workbench 10 is determined. Insert the bolt head 5 into the fitting hole 11 within the range of
a, insert the claw washer 7 therebetween, place the hollow block 1 with the notch face 4 facing the bolt 5, and screw the nut 6 from above through the claw washer 7. A method for assembling a panel frame in a cut-free type mosaic panel, which is characterized by a cut-free mosaic panel. 2 Place the claw washer 7 on the bottom of the bolt head 5a in advance.
A method for assembling a panel frame in a cut-free mosaic panel according to claim 1, which comprises joining together.