JPS6133480Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a watertight structure of a corner portion of a frame for a solar heat collector.

The solar heat collectors (hereinafter referred to as heat collectors) currently in use are made of a rectangular box made of aluminum alloy, stainless steel, etc., with a translucent plate attached to the upper opening to form a hermetically sealed interior. houses a heat collecting plate that collects the solar heat rays that have passed through the transparent plate.

Heat collectors are installed in high places such as rooftops and are exposed to rainwater with relatively high wind pressure. There is a risk that rainwater may enter the heat collector from the joints).

As shown in Fig. 1, the conventionally used watertight structure of the joints of frames 1', 1'' has an irregularly shaped sealing material 2' made of polysulfide or the like inside the joints of the frames 1', 1'' to be joined. Paint and attach both frames 1' with L-shaped brackets.
However, as mentioned above, the frame body is exposed to rainwater with wind pressure and high solar heat, so the sealing material 2' deteriorates and cracks, making it impossible to withstand long-term use. It wasn't something I could get.

The present invention takes the above points into consideration, and uses a specially constructed durable watertight sheet (e.g., butyl rubber, chloroprene rubber, etc.) instead of an amorphous sealing material to join the frame corners. do.

The present invention will be described below with reference to Examples.

The frames 1A and 1B to which the corner portions are to be joined are formed into a U-shaped cross section consisting of a vertical wall portion 2, an upper wall portion 3, and a lower wall portion 4. Further, a fixing part 5 and a transparent plate support part 6 are provided protrudingly on the upper surface of the upper wall part 3, and a ridge 7' is fixed on the fixing part 5 with screws or the like, so that a transparent plate is formed between the ridge 7 and the support part 6. The light plate 8 is tightly held. Furthermore, 9,1
0 is a tight material.

FIG. 4 shows a joining fitting 11 for joining the corner portions of the frame. This coupling fitting has two adjacent vertical walls 12A, 12B, an upper wall 13, and a lower wall 14, and is integrally formed by sheet metal bending, die forging, or other means. The height of the coupling fitting 11, ie, the distance between the outer surfaces of the upper wall 13 and lower wall 14, is slightly smaller than the distance between the inner surfaces of the upper wall 3 and lower wall 4 of the frame body.

FIG. 5 shows a watertight sheet 15 made of butyl-based synthetic rubber, etc. The sheet consists of an upper part 16, a central part 17, a lower part 18, and the above three parts 1, as divided by chain lines in the figure.
It is formed into a convex shape with an extension 19 projecting laterally from 6, 17, and 18. The upper part 16, center part 17, and lower part 18 of this watertight sheet 15 are applied with adhesive or the like to the outer surfaces of the upper wall part 13, one vertical wall part 12A, and the lower wall part 14 of the coupling fitting 11 shown in FIG. (Figure 6). In this example, the watertight sheet itself was made of adhesive butyl synthetic rubber, so a protective paper with cut lines cut at the bends was pasted on both sides of the watertight sheet 15, and the paper was peeled off one after another. .

When joining the frames 1A and 1B, first attach the fittings 11 and the watertight sheet 15 formed as shown in FIG.
and the vertical wall portion 12A of the coupling fitting 11 are fixed. Next, attach the extension part 19 of the watertight sheet to both frames 1A and 1B.
The frame bodies 1A are arranged in a state where they are clamped at the joint part of the frame body 1A, and the clamped extension part 19 is attached to the outer surface of the vertical wall 2 of the frame body 1A, and connected to the frame body 1A via the extension part. Fix the metal fittings 11 with screws or the like. In this case it is advantageous to use an outer corner block 20 of L-shaped cross section. Although the extended portion 19 of the watertight sheet 15 is folded back onto the outer surface of the frame 1A, the watertight effect can be sufficiently achieved even if the extended portion 19 is simply clamped at the joint portion.

The present invention is constructed as described above, and a watertight sheet with excellent water resistance and durability is not only integrally inserted into the contact surface of the frame and the connecting metal fittings, but also inserted into the joint between the two frame materials. , it provides a watertight structure with extremely superior water resistance and durability compared to conventional irregularly shaped sealing materials.

[Brief explanation of the drawing]

Fig. 1 is a schematic illustration of a conventional watertight structure, Fig. 2 is a cross-sectional view of the main part of the present invention, Fig. 3 is a longitudinal cross-sectional view of the main part of the present invention, Fig. 4 is a perspective view of the coupling fitting, and Fig. 5 is a cross-sectional view of the main part of the present invention. Figure 6 is a perspective view of the watertight sheet, Figure 6 is a perspective view showing the watertight sheet attached to the coupling fitting, Figure 7 is a schematic explanatory diagram showing the order of folding the watertight sheet, and Figure 8 is a perspective view of the watertight sheet.
The figure is a perspective view showing a state in which the frame bodies are joined. 1A, 1B...frame body, 2...vertical wall portion of frame body,
3... Upper wall part of the frame body, 4... Lower wall part of the frame body, 11
... Connecting metal fittings, 12A, 12B... Vertical wall portion of the connecting metal fittings, 13... Upper wall portion of the connecting metal fittings, 14... Lower wall portion of the connecting metal fittings, 15... Watertight sheet, 19...
…An extension of the watertight sheet.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. In a watertight structure of a corner part of a frame for a solar heat collector, in which the corner parts of a frame with a U-shaped cross section consisting of vertical, upper, and lower walls are joined by connecting fittings, The coupling fitting 11 includes upper and lower wall portions 13 that are inscribed in the cross section of the frame body with a small gap during bonding.
14 and two adjacent vertical wall portions 12A, 1
2B, and the upper and lower walls 1 of the coupling fitting.
An integral watertight sheet 15 is attached to the outer surface of 3, 14 and one vertical wall portion 12A, and an extension portion 19 is attached to the watertight sheet attached to the vertical wall portion 12A.
is formed, and a coupling fitting is tightly fixed to the inside of the end of one frame 1B to be joined via the watertight sheet, and when the other frame 1A is further fixed by the coupling fitting. , an extension 19 of the watertight sheet between the joints of the ends of both frames 1A and 1B.
A watertight structure of a corner part of a frame for a solar heat collector, characterized by closely sandwiching. 2. The watertight structure according to claim 1, wherein the end of the extension of the watertight sheet sandwiched between the joints of the ends of both frames is erected on the other frame and attached to the outer surface of the wall.