JPH0350232Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a bay window, and particularly to a bay window whose roof portion is a soundproof structure.

(Prior art and its problems) Since the roof panels that form the roof panels of bay windows are generally made of relatively thin metal plates such as galvanized iron plates or aluminum plates, raindrops, hailstones, and hailstones are susceptible to damage during rain, hail, or hail. The impact noise generated by hitting the roof shingles becomes a very harsh noise that disturbs your sleep not only during the day but also at night. Conventional bay windows are not equipped with any special means to prevent such noise; however, as shown in Figure 3 A and B, a layer of foamed urethane or the like is placed on the back side of the roof board 15 for the purpose of heat insulation. A heat insulating material 18 is installed, and although this heat insulating material 18 can absorb some of the impact noise caused by raindrops on the roof shingles 15, it is not very effective.

(Technical means for solving the problem) In view of the above, the present invention is designed to suppress the generation of noise by attenuating the impact sound generated on the roof shingles due to raindrops, etc. The technical means thereof are as follows: A plurality of damping sheets are affixed to a part or most of the back surface of the upper wall of the roof board, and a space between the plurality of damping sheets is attached so as to be in pressure contact with the damping sheet in the space on the back side of the roof board. It is characterized in that a foamed plastic material is loaded through the gap in the roof panel so that it comes into direct contact with the back surface of the upper wall of the roof board.

(Example) An example of the present invention will be described below based on the drawings.

FIG. 1 shows a bay window formed extending from a building, and this bay window is composed of a roof part 1, a base plate part 2, a front window part 3, and left and right wing window parts 4, 4. As is clear from FIG. 2, the roof part 1 includes an aluminum roof plate 5 having a trapezoidal plan view and a substantially U-shaped vertical section facing downward; Horizontally arranged wooden ceiling board 7
including. The roof plate 5 includes a trapezoidal upper wall portion 5a and a peripheral wall portion 5b protruding along the periphery of the upper wall portion 5a.
A plurality of damping sheets 6A, 6B, 6C, 6D, and 6E are attached to the back surface of the upper wall portion 5a so as to occupy, for example, about 70% of the total area of the back surface, and A foamed plastic material 8 is placed on the back side of the roof plate 5 to fill the space formed on the back side, that is, the space formed between the back side of the upper wall part 5a and the inner peripheral surface of the peripheral wall part 5b, without any gaps. A damping sheet 6A is filled in and attached to the back surface of the upper wall portion 5a.
A foamed plastic material 8 is loaded so as to press and support the lower surfaces of the damping sheets 6A to 6E and directly contact the back surface of the upper wall portion 5a of the roof board 5 through the gaps between adjacent vibration damping sheets 6A to 6E.

The vibration damping sheets 6A to 6E are sheet-shaped damping materials, that is, vibration absorbing materials made of modified bituminous material, synthetic resin, and filler. Known sheet-like damping materials can be used. These damping sheets 6A to 6E have a thickness twice that of the roof plate 5, but it is desirable that they be as thick as possible. In addition, vibration damping sheets 6A to 6E
can be attached to the back side of the roof board 5 using an adhesive, or directly attached using a damping sheet coated with a pressure-sensitive adhesive in advance. Good too.

The foamed plastic material 8 is made of polyurethane, and after the damping sheet is attached, it is foamed in situ in the space on the back side of the roof board 5 and loaded into the space. By loading the foamed plastic material 8 in this way, the damping sheets 6A to 6E stuck to the back surface of the upper wall portion 5a of the roof board are constantly supported by the foamed plastic material 8 from the lower surface side, and the damping sheets The foamed plastic material 8 is directly in contact with the back surface of the upper wall portion 5a of the roof plate through the gaps between 6A and 6E, and the foamed plastic material 8 is adhered to the back surface of the upper wall portion 5a by the adhesive property unique to the resin. The damping sheets 6A to 6E are firmly supported by the foamed plastic material 8, and there is no risk of them falling off or peeling off from the adhesive surface of the upper wall portion 5a. Furthermore, the presence of the foamed plastic material 8 not only ensures heat insulation, but also allows a certain degree of vibration absorption.

Figure 4 shows the roof of the present invention as shown in Figure 2 A and B (the damping sheet covers the entire area of the upper wall of the roof plate).
70% affixed and loaded with foamed plastic), and the roof of a conventional bay window as shown in Figure 3 A and B (only the back side of the roof board is loaded with foamed plastic). about things),
This graph shows the results of measuring the sound pressure level during rain.According to this graph, the sound pressure level of the device according to the present invention is lower than that of the conventional method in all frequency ranges, indicating that noise has been reduced. It is clear that there are.

In the embodiment shown in Figure 2 A and B, the damping sheet is attached to approximately 70% of the area of the back surface of the upper wall of the roof slope. It is preferable to paste it on the entire back side). However, even if the damping sheet is applied to 20 to 30% of the area of the back surface of the wall above the slope of the roof, it will still have a considerable effect. Figure 5 shows a roof with no damping sheet pasted at all, a roof with damping sheet pasted on 70% of the area of the upper wall of the roof, and a roof with damping sheet pasted on 20% of the same area. This figure shows the results of measuring the sound pressure level during rain on the roof. According to this graph, it can be seen that even if the area ratio of the damping sheet is 20%, the sound pressure level is considerably lower than when no damping sheet is attached at all.

(Operations and Effects of the Invention) According to the present invention, a damping sheet is attached to the back side of the roof slope, and a foamed plastic material is loaded in the space on the back side of the roof slope, so that raindrops, hailstones, or hail can be prevented. Even if an impact sound is generated by hitting the slope of the roof, the impact sound is attenuated by the damping sheet and further absorbed by the foamed plastic material, resulting in a lower level of noise, thereby effectively suppressing the noise generation. be able to.

In addition, according to the present invention, the foamed plastic material is loaded into the space on the back side of the roof board in such a way as to be in pressure contact with the vibration damping sheet, so that the vibration damping sheet attached to the backside of the roof board is covered by the foamed plastic material. The vibration damping sheet is always pressed from the bottom side, so even if the adhesive used to attach the damping sheet loses its adhesive function due to aging due to long-term use, the damping sheet can be bonded to the bottom side made of foamed plastic. It is supported by the pressure contact force from the roof sheet, and can prevent it from falling off or peeling off from the back surface of the roof sheet.

A particular feature of the present invention is that a plurality of damping sheets are attached to the back surface of the upper wall of the roof board so that gaps are created between each sheet.

For this purpose, by loading foamed plastic material into the space on the back side of the roof shingle, the adhesive properties unique to the resin allow the foamed plastic material to be directly applied to the back surface of the top wall of the roof shingle through the gaps between the plurality of vibration damping sheets. This will prevent the foamed plastic material from separating from the roof shingles over a long period of time, and will also provide strong support for the vibration damping sheet from this aspect.

The damping sheet must be firmly attached to the back of the upper wall of the roof board. This is because if the vibration damping sheet were to peel off from the back surface of the upper wall during long-term use, the vibration absorbing properties would naturally decrease. On the other hand, since the damping sheet is attached to the backside of the roof board in a harsh position where it is most susceptible to solar heat, the adhesion performance tends to deteriorate in a short period of time.

In this regard, according to the present invention, as mentioned above, the vibration damping sheet can be firmly attached to the back surface of the upper wall of the roof board for a long period of time due to the adhesiveness of the foamed plastic material to the roof board and the pressure contact with the vibration damping sheet. Therefore, it is possible to maintain vibration absorption properties over a long period of time and effectively suppress the generation of noise.

[Brief explanation of the drawing]

Figure 1 is an external inclined view showing one embodiment of the bay window according to the present invention, Figure 2 A is a vertical sectional view of the roof of the bay window in Figure 1, and Figure 2 B is I-I in Figure 2 A. line cross section,
Figure 3A is a vertical cross-sectional view of the roof of a conventional bay window, Figure 3B is a cross-sectional view taken along the - line in Figure 3A, and Figure 4
The figure is a graph showing the results of measuring the sound pressure level for the embodiment of the present invention shown in Fig. 2 A and B and the conventional example shown in Fig. 3 A and B. It is a graph showing the results of measuring the sound pressure level in the case where the damping sheet is not attached, the case where the adhesion area ratio of the damping sheet is 70%, and the case where the adhesion area ratio is also 20%. DESCRIPTION OF SYMBOLS 1... Roof part, 5... Roof board, 5a... Upper wall part of roof board, 6A-6E... Damping sheet, 8... Foamed plastic material.

Claims (1)

[Scope of utility model registration request] A plurality of damping sheets are affixed to a part or most of the back surface of the upper wall of the roof board, and a space between the plurality of damping sheets is attached so as to be in pressure contact with the damping sheet in the space on the back side of the roof board. A bay window characterized in that a foamed plastic material is loaded in such a way that it comes into direct contact with the back surface of an upper wall of a roof board through a gap between the roof panels.