JPS6337402Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is an exterior material, particularly a siding board (hereinafter simply referred to as a board) consisting of one of a single body, a composite body, and a sandwich structure having male and female connecting parts with an engaging structure on the left and right side walls. ), the purpose of which is to improve the waterproofness of the connecting parts of this type of board, and to easily connect the boards without impairing the waterproofness.

Conventionally, when a wall body is formed using boards, the connecting portions, so-called joint portions, are formed with male and female structures, for example, as in Japanese Utility Model Publication No. 46-20440 and Japanese Utility Model Publication No. 54-21373. Therefore, when the connecting portion of contact between the rigid substrates is exposed to wind and rain, there is a drawback that rainwater easily leaks from the unevenness of the contact surface. Furthermore, there are boards in which a well-known packing material is disposed at the joints, such as Utility Model Publication No. 50-899 and Utility Model Publication No. 50-5217. In this panel, the elastic packing material is affixed to the female connecting portion with an adhesive. However, it is difficult and complicated work to linearly attach a long, thin and flexible elastic packing material to the joints of metal plates with embossed patterns formed by plastic processing, and requires skill. It was something I needed. In addition, this type of packing material is compatible with architectural panels in which the shape and gap of the connecting parts are always constant; if the shape and gap are different, an elastic packing material of a corresponding size must be used. Ta. Furthermore, if a deformation beyond elasticity occurs in the connecting portion when the panel is attached, there is no ability to cover this deformation, and there is a problem that rainwater may infiltrate from this portion. Another drawback is that if the relationship between the elasticity and the gap between the connecting parts is extremely loose, rainwater or the like can enter through the fibers of the waterproof paper or through small gaps due to capillary action. moreover,
Recently, it has been proposed to use hot melt caulking agents (hereinafter simply referred to as caulking agents) as waterproofing materials, as shown in Utility Model Application Publication No. 57-145035. However, in the case of this publication, the waterproofing material is melted and implanted, but it has the disadvantage that the connecting portion becomes dirty because it is sticky even at room temperature, and furthermore, it is difficult to pack it. Furthermore, when caulking agent A is used as shown in Fig. 1, it is difficult to reliably plant it in the innermost part of insertion groove B, and furthermore, the joint width ΔW when panels C are connected is Due to the unevenness of the thickness of the insertion edge D and the caulking agent A, the unevenness of the installed amount, or the difficulty of insertion due to adhesiveness, gaps ΔG of various widths are likely to be formed, and accordingly, the joint width ΔW
This had the disadvantage of causing unevenness and degrading the aesthetic appearance.
Furthermore, there were drawbacks such as the caulking agent flowing out at high temperatures (70 to 80 degrees Celsius) in midsummer. moreover,
Since the caulking agent is sticky, it has the disadvantage that if the boards are attached and detached two or three times when connecting the boards, the caulking agent will shift from the predetermined position on the insertion edge of the board.

In order to eliminate these drawbacks, the present invention injects caulking agent into the upper surface or lower edge of the insertion groove of the board, and also makes the portion of the insertion edge that comes into contact with the caulking agent water repellent and slippery. A mold release layer is provided to facilitate board connection, and there is no displacement of the caulking agent. Furthermore, the joint structure has sufficient waterproofness, and the joint width can be formed at a constant level.
In addition, the present invention proposes a board that does not contaminate the extension, or cause the caulking agent to displace or peel off during packaging.

An embodiment of the board according to the present invention will be described in detail below with reference to the drawings. That is, the second
The figure is a perspective view showing a typical example of the above-mentioned board, for example, a board in which a metal plate, a core material, and a backing material are laminated in a sandwich structure. 1 is the board, 2 is the main body, and the metal plate is formed into a predetermined shape. A long decorative surface 3 and side walls 4 and 5 are provided by bending both side edges of the decorative surface 3. Reference numeral 6 denotes a male type connecting portion, which is formed from an insertion edge 7 that projects outward from the lower end of the side wall 4, and a tongue piece 8 whose tip is bent inward into a flap shape, and 9 is a female type connecting portion. An insertion groove 10 formed inward at the bottom of the side wall 5, an extension 12 extending its lower edge 11 outward, a protrusion 13 provided as necessary in the middle of the insertion groove 10, and an end of the extension. It is formed from a tongue piece 14 with a bent edge. Reference numeral 15 denotes a core material which is filled inside the main body 2, such as a synthetic resin foam (polyurethane foam, polyisocyanurate foam, phenol foam, polystyrene foam, vinyl chloride foam, polyethylene foam alone, or a borate, A mixture of one or more of silicate, pearlite grains, and fibers, so-called
(including flame retardant and mechanically strengthened foam, etc.), mineral fiberboard (sheathing insulation board, insulation board, rock wool, glass wool), gypsum board, calcium silicate board, calcium carbonate board alone , or a composite structure of one or more of these.
Numeral 16 is a back material that covers the back surface of the core material 15 and is stretched between the back surface 7a of the insertion edge 7 and the back surface 11a of the lower edge 11. Examples of materials include asphalt felt, synthetic resin sheet, asbestos paper, metal foil (Al, Fe, Pb), kraft paper,
Alternatively, it may be a laminate of two or more types, or a sheet-like material subjected to waterproof treatment. The figure shows a case where one end of the back material 16 is held between the tongue pieces 8. Reference numeral 17 denotes a caulking agent, which is installed in a linear or band-like manner and continuously along the side wall 4 at least within the width L of the upper surface 10a or lower edge surface 11a of the insertion groove 10, as shown in FIG. Its vertical cross section is circular, semicircular, mountain-shaped, trapezoidal,
The shape is triangular, quadrilateral, elliptical, or similar. Specific examples of the caulking agent 17 include a soft material in a plastic state that has adhesiveness, cushioning properties, waterproofness, and heat resistance, such as synthetic rubber,
Made of synthetic resin, its melting temperature is 160 to 200.
℃, viscosity is 2000~11000CPS, softening point is 100~150
℃, heat resistant, no sag (even after 72 hours after applying caulking to a slate board and holding it vertically at 76 to 80 ℃), it is also resistant to UV deterioration.
There is no change in color or hardness, and there is no change in flowability (2~
It is also sufficient that the shape is maintained by flowing only 3 mm.
The weather resistance remains unchanged even after 72 hours, and the adhesive strength is 30 to 60 kg/mm ² at 20°C and a tensile speed of 50 mm/min. Of course, all caulking agents having similar physical properties are included. To explain further, the width Δl and height Δh of the caulking agent 17 are the height H of the insertion groove 10 as extracted and shown in FIG.
It is smaller and is planted so as not to be exposed outward from the side wall 4. This prevents the caulking agent from being exposed on the exterior of the female joint and damaging its appearance, and also prevents contamination, peeling, deformation, and displacement during packaging.
Furthermore, the joint width ΔW (shown in Figure 4) is designed to prevent the adverse effects caused by the displacement of the caulking agent when the board is installed, and to ensure that the insertion edge 7 of the board and the innermost part of the insertion groove 10 are in contact with each other. It helps to keep things evenly aligned. Reference numeral 18 denotes a release layer, which is formed by thinly coating, pasting, impregnating, etc. on the area S of the surface portion 16a of the back material 16 on the back side of the insertion edge 7 and the surface 8a of the tongue piece 8. If the caulking agent 17 and the insertion edge 7 come into contact with each other during construction, it can be inserted into the insertion groove 10 without resistance, and also to prevent displacement of the caulking agent 17 and to repel rainwater etc. It is something. As an example, the above S
Laminating polyethylene film on the area, applying silicone to form a coating,
These include applying wax to form a thin film and impregnating the backing material with polyethylene resin.

Next, a construction example will be explained.

First, as shown in FIG. 4, the board 1 is fixed via nails 19 onto the trunk edge indicated by the two-dot chain line. Next, the insertion edge 7 of the board 1 is inserted into the insertion groove 10 to form a joint portion 20, and the extension portion (not shown) is fixed with nails. Therefore, to construct the wall, the above steps may be repeated. In addition, in this construction, the caulking agent 17 hardly adhered to the insertion edge when it was inserted, and the caulking agent 17 could be inserted without being displaced, and the joint width ΔW was also constant. It was highly efficient. Further, when a watertight test (JIS-A-6711) was conducted on this joint 20, water leakage was observed on the back side of the joint of the wall using the conventional board. Furthermore, in the long-term watertight test, the back surface material 16 became a "wet" rag due to capillary action. On the other hand, no water leakage occurred at the joints using the board according to the present invention, and no capillary phenomenon to the backing material was observed.

What has been described above is only one embodiment of the board according to the present invention, and the core material 15, tongues 8, 14, and caulking agent 17 may be formed as shown in FIGS. 5a to 5i. Moreover, the shape of the side wall 5 of the main body 2 can also be formed as shown in FIGS. 6a to 6e. Furthermore, as shown in FIG. 7, the board 1 is made of a single material, such as an inorganic (gypsum, slate, gypsum slag and cement, calcium carbonate, calcium silicate) mineral fiber material, which is formed by molding a single material using a mold or the like. (including reinforcement by adding other substances).

As described above, according to the board according to the present invention, the joints at the weakest points of the male and female connecting structures are caulked with, for example, a caulking agent that is adhesive in a plastic state and has cushioning properties.
It has the feature that rainwater does not leak from the joints to the back side of the board even in the event of wind and rain. Furthermore, since the caulking agent of this board is plastic, it can easily follow the shape of the base, making construction extremely efficient. Furthermore, during construction, a release layer 18 was formed on the back side of the insertion edge, so there was no displacement due to contact between the caulking agent and the insertion edge 7, allowing smooth insertion, and the waterproof function was further improved by its water repellency. There are characteristics that can be strengthened. In addition, since caulking agent was planted on the top and bottom edges of the insertion groove, packaging and
A major feature is that the extension part will not be contaminated during transportation, and the caulking agent will not peel off or be displaced. Furthermore, since the caulking agent has adhesive properties, it has the characteristic of fixing the joint between the two boards without using adhesive.

[Brief explanation of drawings]

FIG. 1 is an explanatory view showing the joints of a wall constructed using conventional siding boards, and FIGS. 2 and 7 are perspective views showing one embodiment of the siding board according to the present invention. , FIG. 3 is an explanatory diagram showing an extracted part of the insertion groove, FIG. 4 is a vertical cross-sectional view showing a connected state of the siding board according to the present invention, FIGS. 5 a to i, and FIGS. 6 a to e. FIG. 2 is an explanatory diagram showing another embodiment of the siding board and the side wall of the main body. 1 ...Main body, 15...Core material, 17...Caulking agent, 18...Release layer.

Claims (1)

[Scope of utility model registration request] A siding board consisting of a male type connecting part having an insertion edge formed on the side wall of the main body part and a female type connecting part having an insertion groove formed on the other side wall and an extension part extending the lower edge outward. A siding board according to claim 1, characterized in that a caulking agent is implanted along the side wall at least on the upper surface or the middle of the lower edge of the insertion groove, and a release layer is formed on the back side of the insertion edge.