JPS6037998Y2 - Metal ventilation door panel - Google Patents

Description

[Detailed explanation of the invention] As shown in Figure 1, this invention forms a horizontal louver 2 that is surrounded by upper and lower frames a and b and left and right vertical frames c and c, and forms a metal ventilation door. Regarding the improvement of the panel.

2. Description of the Related Art As a ventilation μm panel, one in which a large number of louvers are formed on a flat metal plate has been known.

However, in the conventional panel, the metal plate 1 was simply cut horizontally in a one-sided root shape to form the louver 2, as shown in Figure 2, which shows the XX cross section of Figure 1. It was causing inconvenience.

That is, after the louver 2 is cut and bent, the edge 4 of the flat plate part 3 has
As shown in an exaggerated manner in FIG. 3, a sharp burr 5 rising toward the louver 2 is formed.

When painting a panel after forming a louver using a press machine, there is no danger as the paint accumulates on the edges of the louver and fills in the burrs 5, but it is not dangerous to press the panel using a painted so-called colored iron plate. When molding, since no painting is done afterwards, burrs 5 remain as they are.

When removing a completed ventilation door from the sill or carrying it around, it is often the case that the door is moved by placing the finger d over the louver hole as shown by the chain line in Figure 3, causing injury to the finger due to the burr 5. There is a great risk of being exposed.

The metal ventilation door panel of the present invention solves the above-mentioned drawbacks by devising a shape so that the burr 5 does not touch the fingers when moving the ventilation door.

Hereinafter, the present invention will be explained with reference to drawings showing embodiments.

FIG. 4 is a partial vertical sectional view showing an embodiment of the panel of the present invention.

In a panel in which a large number of louvers 2, 2 are cut and raised on a metal plate 1, the end edge 4 of the flat plate part 3 after the louvers 2, 2 are cut and raised.
a (the slightly wider part including the edge 4) is the louver 2,
It is slightly bent towards 2.

Therefore, the ventilation hole 6 is formed in the shape of a slit between the edge of the louver 2 and the edge 4 of the edge portion 4a.

The ventilation μm panel of the present invention constructed as described above is manufactured as follows.

That is, first, as shown in FIG. 5, a metal plate 1 is pressed between an upper mold 7 and a lower mold 8 to form a louver 2 similar to the conventional structure shown in FIG.

However, in this case, the upper mold 7 is not lowered to the lowest position.

Next, after raising the upper mold 7 once, the lower mold 8 is moved to the left in the figure (
Or move the upper mold 7 a little to the right in the figure, and then
Lower the upper mold 7 to the lowest position as shown in the figure.

As a result, the edge portion 4a of the flat plate portion 3 of the metal plate 1 is pushed by the step portion 7a of the upper mold 7 and bent toward the louver 2.
The panel will look like the one shown in Figure 4.

Since the ventilation Fm panel of the present invention is constructed and manufactured as described above, the burr 5 formed on the edge 4 during press molding is bent from the flat plate portion 3 toward the louver 2, as shown in FIG. Since it is formed toward the outside of the raised end edge 4a, when lifting the ventilation door by hooking your finger on the edge of the louver hole of the ventilation door manufactured using a colored iron plate, the As shown, the finger d does not touch the streamer, and injuries caused by sharp streamers can be effectively prevented.

[Brief explanation of the drawing]

Fig. 1 is a front view illustrating a ventilation door using the panel of the present invention, Figs. 2 and 3 show an example of a conventional panel, and Fig. 2 is a partial vertical cross-sectional side view taken along line X-X of Fig. 1. Figure 3 is an enlarged view of part A in Figure 2, and Figure 4 is a second diagram showing an embodiment of the present invention.
FIGS. 5 and 6 are longitudinal sectional views sequentially showing the panel manufacturing process of the present invention, and FIG. 7 is an enlarged view of section B in FIG. 4. 1...metal plate, 2...louver, 3...
... Flat plate part, 4 ... Edge, 4a ...
・Edge part, 5... Burr, 6... Ventilation hole, 7... Upper mold, 7a... Step part, 8...
...Lower mold.

Claims (1)

[Scope of utility model registration request] In a metal ventilation door panel in which a large number of louvers 2, 2 are cut and cut on a metal plate 1, the end edges 4a, 4a of the flat plate part 3 after cutting and cutting the louvers 2, 2 are cut and cut. 2. A metal ventilation door panel characterized by being bent upward.