JPH0321819B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a shutter for a ventilation system that is provided with measures to improve cleaning performance.

[Technical background of the invention]

Conventionally, in ventilation equipment such as ventilation fans,
A shutter for opening and closing is provided at the outdoor opening of the outer frame.

[Problems with background technology]

However, in the above-mentioned conventional type, as the ventilation operation is repeated, oil dust and the like get stuck to the shutter, especially on its inner surface, which must be cleaned, but cleaning is extremely difficult and difficult. However, there was a problem that it was not possible to thoroughly clean every corner.

[Object of the Invention] The present invention has been made in view of the above-mentioned circumstances, and its purpose is to easily and reliably remove oil dust, etc., and to use it for protection such as preventing scratches. To provide a shutter for a ventilator that can be made using the same members as they are.

[Summary of the invention]

The present invention involves press working a metal plate with a removable protective sheet pasted on at least the back surface of the front and back surfaces of the other portions, excluding the flange portion for attachment to the outer frame, which is the bent portion. This is characterized in that the protective sheet is formed into a predetermined shape, and the protective sheet protects the shutter and facilitates cleaning of the shutter.

[Embodiments of the invention]

Hereinafter, an embodiment in which the present invention is applied to a ventilation fan shutter will be explained with reference to the drawings.
In the figure, 1 is a first bobbin wound with a long strip-shaped metal plate, which is the raw material for shutters, such as a steel plate whose surface has been pre-painted, so-called color steel plate 2, and 3 is an adhesive 4 on the back side. The second bobbin 6 is wound with a long strip-shaped protective sheet 5 made of polyethylene, for example, and coated with the adhesive 7 on the back side. The color steel plate 2, the protective sheet 5, and the protective sheet 8 are pulled out from the first and third bobbins 1, 3, and 6, respectively, and brought together by rollers 9, 9, as shown in FIG. Protective sheets 5 and 8 are adhered to both the front and back surfaces of the color steel plate 2 using adhesives 4 and 7, respectively, and then wound up by a fourth bobbin 10 shown in FIG. In this case, the painted surface of the colored steel plate 2 is smooth, but the unpainted back surface is not smooth, so the protective sheet 5,
Normally, the degree of adhesion of 8 is also different, but in this embodiment, the adhesive force of the adhesive 7, in other words, the adhesive force of the back side protective sheet 8, is the adhesive force of the adhesive 4, the adhesive force of the adhesive 4 is different. The adhesion strength is greater than that of the protective sheet 5, thereby making the degree of adhesion of each of the protective sheets 5 and 8 to the color steel plate 2 equally strong. In addition, as shown in FIG. 3, these protective sheets 5 and 8 have a width excluding a flange portion 2a for attachment to the outer frame, which will be described later, which is a portion that is bent by press working, which will be described later, of the color steel plate 2. This prevents the protective sheets 5, 8 from being torn or lifted from the folded portion during press working. The color steel plate 2 is then pulled out from the bobbin 10 in predetermined lengths and press-worked, leaving only the main body portion to which the protective sheets 5 and 8 are attached and the flange portion 2a, and in particular, the portion 2b in Fig. 3. The flange portion 2a is cut and raised from the main body portion, and at the same time, the main body portion is cut into pieces and molded as shown in FIG. 4, thereby forming a shutter 11 for a ventilation fan. FIG. 5 shows the overall configuration of the ventilation fan, in which 12 is an outer frame to which the flange portion 2a of the shutter 11 is attached, 13 is a motor, 14 is a blade, 15 is a spinner, and 16 is a decorative frame. The shutter 11 is pivotally installed in the outdoor opening of the outer frame 12 of the ventilation fan, for example, in two parts, one above the other, so that they can be opened and closed.

Now, in the case of this embodiment configured as above,
As the ventilation operation is repeated, in which the motor 13 of the ventilation fan is energized to rotate the blades 14, thereby opening the shutter 11 and discharging dirty air from the room to the outside, the shutter 11, especially its inner surface (back surface), Oil and dust contained in the dirty air sticks to it, and it also sticks to the outside (surface). However, in the case of this embodiment, the oil dust and the like do not adhere directly to the color steel plate 2, which is the base of the shutter 11, but to the protective sheets 8 and 5 attached to both the front and back surfaces of this plate. By peeling off the protective sheets 8 and 5 as shown in FIG. 6, dirt such as oil dust can be easily removed from the shutter 11. This makes cleaning much easier than before, and also thoroughly cleans every corner. In other words, it allows for reliable cleaning. In this case, the protective sheets 5 and 8 are originally intended to prevent scratches on the front and back surfaces of the color steel plate 2 during pressing and before that, and by using them as they are and peeling them off, the protective sheets 5 and 8 are used as described above. Since cleaning efficiency can be improved, it can be rational and economically advantageous. In addition, since the protective sheets 5 and 8 are provided excluding the flange portion 2a which is the bent portion of the color steel plate 2, the protective sheets 5 and 8 are provided except for the bent portion of the color steel plate 2 during press working as described above. Not only will the protective sheets 5 and 8 not be torn or lifted off the flange portion 2a, which is the folded portion, but especially when the protective sheets 5 and 8 are peeled off together with the attached dirt, the protective sheets 5 and , without leaving 8,
In addition, it can be peeled off cleanly without causing any tearing or floating at the boundary between the bent portion and the bent portion.

Incidentally, after the protective sheets 5 and 8 have been peeled off, the shutter 11 may be coated with another removable film by painting or the like. Further, the base of the shutter 11 is not limited to a colored steel plate, and may be, for example, an unpainted ordinary steel plate or an aluminum plate. The present invention is not limited to a shutter for a ventilation fan, but can be widely applied to a shutter for other ventilation devices in general, and may be installed separately from the main body of the device, such as for agricultural greenhouses.

In addition, the present invention is not limited to the embodiments described above and shown in the drawings, and may be implemented with appropriate modifications within the scope of the gist.

〔Effect of the invention〕

As is clear from the above, the present invention has a removable protective sheet affixed to at least the back surface of the front and back surfaces of the parts other than the flange part for attachment to the outer frame, which is the bent part. It is characterized by being formed by pressing a metal plate into a predetermined shape, which allows for easy and reliable cleaning to remove oil dust, etc., and it can also be used for protection such as preventing scratches. In addition to being able to use a certain member as is, the protective sheet will not be torn or lifted at the flange for attachment to the outer frame, which is the part that is bent during press working of the metal plate. In addition, even when the protective sheet is peeled off along with the attached dirt, it does not leave any residue on the mounting flange of the metal plate, and there is no tearing or lifting at the boundary with the mounting flange. It is possible to provide a shutter for a ventilator that has the excellent effect of being able to be peeled off.

[Brief explanation of the drawing]

The drawings show an embodiment in which the present invention is applied to a ventilation fan. Figure 1 is a schematic side view of a device for pasting a protective sheet on a color steel plate, and Figure 2 is a diagram showing the main parts of the device. An enlarged longitudinal side view, Fig. 3 is a partial perspective view of the colored steel plate with a protective sheet pasted on it, Fig. 4 is a perspective view of the shutter alone, Fig. 5 is a longitudinal side view of the entire ventilation fan, and Fig. 6 shows the protection. FIG. 3 is a perspective view of a single shutter in which a sheet is being peeled off. In the figure, 2 is a color steel plate (metal plate), 4 is an adhesive,
5 is a protective sheet, 7 is an adhesive, 8 is a protective sheet,
11 is a shutter.

Claims (1)

[Claims] 1. Pressing a metal plate with a removable protective sheet affixed to at least the back surface of the front and back surfaces of the other portions excluding the flange portion for attachment to the outer frame, which is the bent portion. A shutter for a ventilation system, characterized in that it is formed into a predetermined shape by processing. 2. A shutter for a ventilation system according to claim 1, wherein the protective sheet is attached to both the front and back surfaces of the metal plate with different adhesion strengths.