JPS5843537Y2 - plate bending structure - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a plate-bent structure used for a power distribution board or a substructure-like structure.

The structures of conventionally used plate bending structures of this type are shown in FIGS. 1 to 6 of the accompanying drawings.

In the figure, reference numeral 1 indicates a bent plate structure, and a box-like structure 2 is made by combining the bent plate structures 1.

The plate bending structure 1 includes an upper edge bent part 3 formed by bending the upper edge of one plate, and a side edge bent part 4 formed by bending the side edge.
, and a lower edge bent part 5 which is formed by bending the lower edge, and each bent part is formed by bending the edge of the plate to form an upper surface part 3-1.
After forming the side surface portion 4-1 and the lower surface portion 51, each front edge is further bent to form each front surface portion 3-2.4-2.5-2.
is formed.

In addition, the joint parts 1' at the four corners where each of the bent parts come into contact are, for example, the upper left part of the figure, as shown in Figure 5, which shows the middle of the bending. 3 upper surface part 3-
1 is pushed into the side surface 4-1 and front surface 4-2 of the side edge bent portion 4, and the front surface 4-2 of the side edge bent portion 4 overlaps. The end portion 3-4 of the front portion 3-2 of the edge bent portion 3 is cut out, and the front portions 3-2, 4-2 of the upper edge bent portion 3 and the side edge bent portion 4 are mutually separated. They are formed to butt against each other.

In addition, at both ends of the upper surface part 3-1 of the upper edge bent part 3, there are generally hanging hands 6 for transporting and lifting when this plate bent structure is combined to form a box-like structure 2. installed.

The conventional plate bending structure 1 has the above-mentioned configuration, and therefore, during transportation, especially after being assembled into a box-like structure and storing items, the upper edge bent portion 3 As shown in FIG. There was a drawback that the joint part 1' would open upward as it would be pulled upward and bent.

Therefore, in order to deal with this, it is necessary to weld and fix the adjacent bent parts of the joint 1', but this has the drawback of requiring considerable effort and processing time. ing.

The object of the present invention is to eliminate the above-mentioned drawbacks and to provide a plate bending structure in which the upper edge bends do not bend and the joints do not open without welding. For this purpose, the joint part of each bent part is formed by forming a horizontal notch groove and a protrusion that fits into the protrusion in the front part of the adjacent bent part, and inserting the upper and lower parts. Among the edge bent portions, at least the upper edge bent portion is bent toward the front over the entire width.

Hereinafter, the present invention will be explained based on the accompanying drawings showing one embodiment thereof.

7 to 11, the plate bending structure 10 has an upper edge bent portion 11 formed by bending each peripheral edge of a single plate, as in the conventional case. It is composed of a side edge bent part 12 and a lower edge bent part 13, and the joint part 10' of each adjacent bent part has a horizontal notch groove and a protrusion that fits into the joint part 10'. The upper and lower edge bent portions 11 and 13 are each folded toward the front over the entire width thereof.

To explain this in detail, as in the conventional case, the upper edge bent portion 11 has an upper surface portion 11-1. The front part 11-2 is formed by being bent, and the side edge bent part 12 has a side part 1.
2-1. The front part 12-2 is provided with the lower edge bent part 13, and the lower part 13-1. Front parts 13-2 are formed respectively, and the front parts 11 of the upper and lower edge bent parts 11.13 are respectively formed.
-2.13-2 or at least both ends of the front surface 11-2 of the upper edge bent portion 11 are not cut out unlike the conventional case, and a front surface 112.13-2 is formed over the entire width.

Further, the joint portion 10' is connected to the side surface portion 12 of the side edge bent portion 12.
The upper part of -1 is pushed into the area surrounded by the upper surface part 11-1 and the front part 11-2 of the upper edge bent part 11, and the upper part of the upper edge part 11 is pushed into the front part 11-2 of the upper edge bent part 11. As shown in FIG. 10 showing the middle of bending, a cutout groove 14 is formed in the lateral direction, and a protrusion 15 that fits into the groove is formed on the front surface 12-2 of the side edge bent portion 12. When the bent portion is completely bent, the protrusion 15 is inserted into the notch groove 14 and engaged.

Therefore, the end surface 14-1 of the notch groove 14 and the protrusion 15
are butted against each other and the end surfaces 15-1.

Moreover, contrary to the above, the front part 12 of the side edge bent part 12
-2 may be formed with a notch groove 16, and a protrusion 17 that fits therein may be provided on the front surface portion 11-2 of the upper edge bent portion 11, or alternatively, a protrusion 17 may be provided in parallel as in this embodiment. good.

Further, in the above embodiment, the notch groove 14 and the protrusion 15 for forming the insertion of the joint portion 10' are provided parallel to the direction perpendicular to the load direction P.
As shown in FIG. 12 or 13, 4 may be shaped like a wedge that is wide at the back and narrow at the front, and the protrusion 15 may have a shape corresponding to this.

In addition, although the above explanation has been about the joint 10' between the upper edge bent part 11 and the left side edge bent part 12, the right joint part and the lower edge bent part 13 and the side edge bent part 12 are Bending part 12
The same applies to the joint between the There is no problem even if it is shifted, and as shown in Figure 15,
The projecting part 15 may be made to protrude from the front part 12-2 of the side edge bent part 12. Since the present invention is constructed as described above, the lifting load by the hanging hand 6 is as shown in FIG. , a reaction force X occurs in response to the load V, and reaction forces Y and Z occur in response to the load W, all of which are absorbed by the joint 10' of the upper, lower, and side edge bent portions. Both ends of the upper edge bent portion 11 are not lifted upward by the lifting of the hand 6.
Also, it does not open at both ends.

As a result, there is no need to fix the joint part 10' by welding, etc., and a plate-bent structure with no open top can be formed by simply bending the plate, saving labor and time. This has the effect of making it possible to obtain a plate bending structure that has excellent properties and is inexpensive.

[Brief explanation of drawings]

Figure 1 is a front view of a conventional plate bending structure, and Figure 2 is its I
3 is a partially cutaway view taken along the line I-II, FIG. 3 is a partially cutaway view taken along the line III-III of FIG. 1, and FIG. 4 is a box-like structure made by combining plate bending structures. A perspective view of
Fig. 5 is a perspective view of the joint part of a conventional plate bending structure in the middle of bending, and Fig. 6 shows the end of the upper surface of the bent part of the upper edge when the bending is completed and the hanging arm is lifted. FIG. 7 is a front view showing an embodiment of the present invention; FIG. 8 is a partial cross-sectional view taken along the line ■-■; FIG. The figures are a partial cross-sectional view taken along the line in FIG. 7, FIG. 10 is a perspective view of the joint in the middle of bending, FIG.
FIG. 15 is a front view showing various other embodiments. 2... Box-like structure, 6... Hanging hand, 10
...Plate bent structure, 10'...Joint section, 11...Top edge bent section, 11-1...
・Top part, 11-2.12-2.13-2...
Front part, 12...Side edge bent part, 12-1...
...Side part, 13...Lower edge bent part, 13
-1...Lower surface part, 14.16...Notch groove, 15.17...Protrusion part.

Claims (1)

[Scope of utility model registration request] In a plate bending structure composed of an upper edge, a side edge, and a lower edge bent part, the front edge is formed by bending the four circumferences of a single plate to the same side, and then folding each front edge again to form a front part. At least the front part of the upper edge bent part extends over the entire width of the edge and the lower edge bent part, and the joint part of each adjacent bent part is the front part of one of the two adjacent bent parts. 1. A plate bending structure characterized in that a protrusion that fits into a notch formed on the other front surface is inserted into a horizontal notch formed on the other front surface.