JP7534853B2 - Building materials for fixtures - Google Patents

Description

The present invention relates to building materials for fixtures and a manufacturing method for building materials for fixtures.

Today's fittings require high fire resistance. For this reason, fittings are provided with frames and stiles, or reinforcing materials installed inside these frames and stiles, in which a fixed-shaped thermal expansion member is attached to the surface of the main body of the fitting. When this type of fitting is exposed to high temperatures during a fire, the thermal expansion member expands due to heating, and the gap between the frame and stile or the hollow part of the frame or stile is blocked. As a result, it is possible to prevent the occurrence of flame penetration holes both inside and outside the room, and it is possible to improve fire resistance (see, for example, Patent Document 1).

JP 2016-56664 A

The surface of the building material body may have protrusions such as screws or projections. For example, the groove where the glass is attached has both sides formed into an inside corner. In this way, it is difficult to attach the thermal expansion member without gaps to the parts of the building material body surface where protrusions are provided or parts formed into an inside corner. For this reason, with this type of building material, there is a risk that the thermal expansion member will peel off and fall off over time. Even if there are no large protrusions and the surface is not inside corner, there is a risk of similar problems with building materials where the surface is not smooth and has small irregularities, such as parts coated with resin.

In view of the above, the present invention aims to provide a building material for fittings and a manufacturing method for building material for fittings that can improve fire resistance regardless of the surface condition of the building material itself.

In order to achieve the above-mentioned objective, the building material for fixtures of the present invention is characterized in that a groove-shaped recess is provided in a building material body molded from metal or resin, and the recess is configured so that both side surfaces are inclined toward each other toward the opening and reach the edge of the opening, and the opening width is narrower than the internal width, and the recess is filled with a heat-expandable material that is applied in a fluid state and hardened.

According to the present invention, since a fluid thermal expansion material is applied to the main body of the building material and hardened, the thermal expansion material can be installed without creating gaps even when the surface of the main body of the building material has protrusions such as screws or projections, or in areas that are configured as recessed corners. Therefore, there is no risk of the thermal expansion material peeling off and falling off over time, and it is possible to improve fire resistance.

1A and 1B are conceptual diagrams showing a manufacturing method for building materials for fixtures according to an embodiment of the present invention, in which (a) is an oblique view showing an overview, (b) is a cross-sectional view, and (c) is a conceptual diagram showing the application of a thermally expandable material with a shaping plate attached to the nozzle. FIG. 2 is a perspective view showing the state in which the building material for fittings manufactured by the method shown in FIG. 1 has been cut by a cutting tool. FIG. 2 is a cross-sectional view showing modified example 1 of the building material for fixtures according to the present invention. FIG. 4 is a cross-sectional view showing modified example 2 of the building material for fixtures according to the present invention. FIG. 4 is a cross-sectional view showing modified example 3 of the building material for fixtures according to the present invention. 11A and 11B show other modified examples of the fitting building material according to the present invention, where FIG. 11A is a cross-sectional view of modified example 4 and FIG. 11B is a cross-sectional view of modified example 5. FIG. 6 is a cross-sectional view showing modified example 6 of the building material for fixtures according to the present invention. FIG. 7 is a cross-sectional view showing modified example 7 of the building material for fixtures according to the present invention. FIG. 8 is a cross-sectional view showing modified example 8 of the building material for fixtures according to the present invention. FIG. 13 is a perspective view showing a modified example 9 of the building material for fixtures according to the present invention. FIG. 11 is a perspective view showing a modified example 10 of the building material for fixtures according to the present invention. 11 shows a modified example 11 of the building material for fixtures according to the present invention, in which (a) is a perspective view, and (b) is a view showing the state in which the building materials for fixtures shown in the modified example 11 are joined together. FIG. FIG. 12 is a perspective view showing a modified example 12 of the building material for fixtures according to the present invention. FIG. 13 is a perspective view showing a modified example 13 of the building material for fixtures according to the present invention. FIG. 1 is a longitudinal cross-sectional view of a main portion of a first embodiment of a building material for fixtures according to the present invention. FIG. 4 is a longitudinal cross-sectional view of a main portion of a second embodiment of the building material for fixtures according to the present invention. FIG. 11 is a longitudinal cross-sectional view of a main portion of a third embodiment of a building material for fixtures according to the present invention. 11 shows Example 4 of the building material for fixtures according to the present invention, where (a) is a longitudinal cross-sectional view of the essential parts, and (b) is a longitudinal cross-sectional view showing the application of a thermally expandable member. FIG. This shows Example 5 of the building material for fixtures according to the present invention, where (a) is a conceptual diagram showing how a thermally expandable material is applied using a nozzle with an inclined outlet, and (b) is a conceptual diagram showing how a thermally expandable material is applied using a nozzle with a normal outlet. This shows Example 6 of the building material for fixtures according to the present invention, where (a) is a conceptual diagram showing how a thermally expandable material is applied with the nozzle axis positioned so that it is perpendicular to the surface, and (b) is a conceptual diagram showing how a thermally expandable material is applied with the nozzle axis positioned so that it is inclined relative to the surface. FIG. 11 is a cross-sectional view of a main portion of Example 7 of the building material for fixtures according to the present invention. FIG. 11 is a cross-sectional view of a main portion of Example 8 of the building material for fixtures according to the present invention. FIG. 13 is a cross-sectional view of a main portion of Example 9 of the building material for fixtures according to the present invention. FIG. 13 is a longitudinal cross-sectional view of a main portion of a tenth embodiment of a building material for fixtures according to the present invention. FIG. 11 is a cross-sectional view showing Example 11 of the building material for fixtures according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a building material for fittings and a method for manufacturing a building material for fittings according to the present invention will be described in detail below with reference to the accompanying drawings.
FIG. 1 shows a manufacturing method of a building material for fittings according to an embodiment of the present invention. The building material for fittings 1 shown here is used as a frame for forming a frame in a fitting or a frame for forming a shoji screen, and is constructed by providing a thermal expansion member 3 on the surface 2a of a building material body 2A. The building material body 2A is molded from metal such as aluminum alloy or stainless steel, or from resin. The thermal expansion member 3 is a non-combustible or flame-retardant fire-resistant member that expands due to heat. In this embodiment, a material that can be applied in a fluid state and then hardened is used as the thermal expansion member 3. Furthermore, in this embodiment, an adhesive is mixed to add adhesiveness to the thermal expansion member 3. For example, thermal expansion graphite can be used as this type of thermal expansion member 3.

When applying the thermal expansion member 3 to the building material body 2A, it is applied by discharging it from the nozzle 10 in a fluid state onto the surface 2a of the building material body 2A. At this time, by moving the building material body 2A and the nozzle 10 relative to each other, the thermal expansion member 3 can be applied continuously to the surface 2a of the building material body 2A in the desired width and thickness, as shown in FIG. 1(b). In addition, by attaching a shaping plate 11 to the nozzle 10, as shown in FIG. 1(c), it is also possible to gradually shape the thermal expansion member 3 applied to the surface 2a of the building material body 2A into a flat shape before it hardens.

After the thermal expansion member 3 is applied to the surface 2a of the building material body 2A, the thermal expansion member 3 can be hardened on the surface 2a of the building material body 2A over time or by chemical treatment such as mixing a hardener to promote the hardening reaction. If necessary after the thermal expansion member 3 has hardened, the building material body 2A and the thermal expansion member 3 can be cut simultaneously with a cutting tool 20 such as a cutter to adjust them to the desired length, as shown in FIG. 2.

According to the above-described construction material 1 for fittings, the thermal expansion member 3 in a fluid state is hardened on the surface 2a of the main body 2A of the fittings, so that even if the surface 2a of the main body 2A of the fittings is somewhat uneven due to protruding parts such as screws and protrusions, the thermal expansion member 3 can be provided without creating a gap between the surface 2a of the main body 2A of the fittings. Moreover, since the thermal expansion member 3 can be applied continuously regardless of the length of the main body 2A of the fittings, there is no risk of joints or gaps occurring in the middle of the thermal expansion member 3. Therefore, if the above-described construction material 1 for fittings is applied to make fittings, there is no risk of the thermal expansion member 3 falling off even after long-term use, and it is possible to expand and fill gaps when exposed to high temperatures, thereby improving fire resistance. In addition, in the building material 1 for fittings, which is constructed by applying and hardening the thermal expansion member 3 to the building material body 2A and then cutting it, the thermal expansion member 3 is provided without gaps all the way to the end of the building material body 2A, and when the building materials are interconnected to form a fitting, there is no risk of gaps occurring between the thermal expansion members 3 of adjacent building materials for fittings 1.

When applying the thermal expansion member 3, it is not necessary to adjust the surface 2a of the building material body 2A to be flat. As in the building material 1 for fittings of modified example 1 shown in FIG. 3, groove-shaped recesses 2b may be proactively provided by, for example, drawing lines in advance on the surface 2a of the building material body 2B. In this way, if the thermal expansion member 3 having fluidity is applied with the recesses 2b provided on the surface 2a of the building material body 2B, the contact area between the building material body 2B and the thermal expansion member 3 will increase after hardening, improving the bonding strength between the two. This makes it possible to more reliably prevent the thermal expansion member 3 from falling off the building material body 2B, which is even more advantageous in terms of fire resistance.

Also, as in the building material 1 for fittings of modified example 2 shown in FIG. 4 and the building material 1 for fittings of modified example 3 shown in FIG. 5, groove-shaped recesses 2c, 2d corresponding to the entire width of the thermal expansion member 3 may be provided on the surface 2a of the building material body 2C, 2D in advance, and the thermal expansion member 3 may be applied to each recess 2c, 2d. Even in this case, since both side edges of the thermal expansion member 3 contact the building material body 2C, 2D, the bonding strength with the building material body 2C, 2D after hardening can be improved. In particular, as in modified example 3 shown in FIG. 5, if the recess 2d is configured in a so-called dovetail shape, the internal width of the thermal expansion member 3 becomes larger than the opening width of the recess 2d, so that it is possible to more reliably prevent the thermal expansion member 3 from falling off the building material body 2D. Furthermore, since the recesses 2c, 2d accurately determine the position where the thermal expansion member 3 is provided, it is possible to easily mass-produce the building material 1 for fittings of a certain quality. In addition, the surface 3a of the thermally expandable member 3 can be set below the surface 2a of the building material main body 2C, 2D, and even if a movable object such as a friction stay or slider is provided on the surface 2a of the building material main body 2C, 2D, there will be no interference with the thermally expandable member 3, which has the advantage of reducing restrictions on the use of the building material for fixtures 1.

The method of providing the recesses 2c, 2d on the surface 2a of the building material body 2C, 2D is not limited to those shown in Figures 4 and 5, but may also be such that two guide members 4a, 4b are provided on the surface 2a of the building material body 2A with a gap between them, as in the building material for fittings 1 of modified example 4 shown in Figure 6 (a) and the building material for fittings 1 of modified example 5 shown in Figure 6 (b). More specifically, modified example 4 shown in Figure 6 (a) forms a recess 2e with a rectangular cross section by providing a thin plate-like guide member 4a on the surface 2a of the building material body 2A in a state where they are parallel to each other. On the other hand, modified example 5 shown in Figure 6 (b) forms a recess 2f with a trapezoidal cross section on the surface 2a of the building material body 2A by providing a guide member 4b with a triangular cross section. According to these modified examples 4 and 5, in addition to the above-mentioned effects, the shape of the building material body 2A can be simplified, and it is easy to mold it. The guide members 4a and 4b provided on the building material body 2A may be removed from the building material body 2A after the thermal expansion member 3 has hardened, or may be left as is.

In all of the above examples, the thermal expansion member 3 is applied so that the surface 3a is parallel to the surface 2a of the building material body 2A, 2B, 2C, and 2D, but the present invention is not necessarily limited to this. For example, as in the building material 1 for fittings of modified example 6 shown in FIG. 7, the thermal expansion member 3 may be applied and cured in a state inclined in one direction relative to the surface 2a of the building material body 2A, or as in the building material 1 for fittings of modified example 7 shown in FIG. 8, the thermal expansion member 3 may be applied and cured so as to have an irregular cross-sectional shape. When the thermal expansion member 3 is applied and cured so that the surface 3a is inclined or the thermal expansion member 3 is applied and cured so as to have an irregular cross-sectional shape, as shown by the arrow and the two-dot chain line in the figure, it is possible to provide directionality in the direction of expansion, and it is also possible to more reliably block parts of the fittings that may become a penetration hole for flames. More specifically, when the thermal expansion member 3 is applied and cured with the surface 3a inclined so that the right side is lower, as in the modified example 6 of FIG. 7, it is expected that it will tend to expand toward the right side more easily than when it is not inclined. Therefore, if there is a concern that a gap that can be a flame's penetration hole will occur on the right side of FIG. 7, the thermal expansion member 3 can be applied and cured to have this shape, so that even if a gap actually occurs, it can be more reliably blocked. Also, when the thermal expansion member 3 is applied and cured to have a cross section that is wide horizontally and has a depression 3b in the center of the surface 3a, as in the modified example 7 of FIG. 8, it is expected that it will tend to expand toward the upper center. Therefore, if there is a concern that a gap that can be a flame's penetration hole will occur in the upper center of FIG. 8, the thermal expansion member 3 can be applied and cured to have this shape, so that even if a gap actually occurs, it can be more reliably blocked.

When the expansion direction of the thermal expansion member 3 is to be made directional, it is not limited to the modifications 6 and 7, but may be applied and cured on the surface 2a of the building material body 2A in a cross-sectional shape in which the plate thickness is equal to or greater than the left-right width, as in the building material 1 for fittings of modification 8 shown in Figure 9. In this modification 8, not only is the plate thickness increased compared to that shown in Figure 1 (b), but the left-right width dimensions are also reduced. Therefore, it is possible to expand more of the thermal expansion member 3 upward without significantly increasing the amount of thermal expansion member 3 applied.

If it is desired to increase the amount of expansion of the thermal expansion member 3 only in a specific area, as in the case of the building material 1 for fittings of the modified example 9 shown in FIG. 10, the thermal expansion member 3 is applied to the surface 2a of the building material body 2A in a certain width, and the thermal expansion member 3' is further partially provided in the specific area. The thermal expansion member 3' that is partially provided may be applied and hardened, or a fixed-shaped member that has already become solid may be attached. As a specific example, in the bottom frame of a sliding window, a thermal expansion member 3 having fluidity is applied and hardened over its entire length, and a fixed-shaped thermal expansion member 3' is further attached to a position corresponding to the frame of the shoji screen. When the thermal expansion members 3, 3' are provided in the above manner, the amount of expansion increases in the part corresponding to the frame of the shoji screen, so that even if a gap occurs between the bottom frame and the frame of the shoji screen, it is possible to prevent a situation in which a flame penetration hole occurs. Even in this case, the amount of the thermal expansion member 3' is increased only in the necessary areas, so that the amount of the thermal expansion members 3, 3' used can be reduced, and it is possible to prevent a large increase in manufacturing costs. The location where the fixed-shaped thermal expansion member 3' is attached may be adjacent to the applied and hardened thermal expansion member 3 on the surface 2a of the building material body 2A, or it may be a location overlapping the applied and hardened thermal expansion member 3.

In all of the above examples, the thermal expansion member 3 is applied continuously to the surface 2a of the building material body 2A, 2B, 2C, 2D, but it does not necessarily have to be continuous. For example, as in the building material 1 for fittings of modified example 10 shown in FIG. 11, the thermal expansion member 3 may be applied and cured intermittently only in the necessary areas. In this case, the thermal expansion members 3 applied intermittently do not need to be arranged on the same straight line. In the building material 1 for fittings in which the thermal expansion member 3 is arranged so as to be divided in the middle, as in modified example 10, a drainage path can be set to cross the thermal expansion member 3, which has the advantage of making it possible to reliably drain water without providing a large number of drainage holes in the building material body 2A.

The thermal expansion member 3 does not necessarily have to be provided over the entire length of the building material body 2A, and may be applied and hardened so as to be spaced apart from the end face 2g of the building material body 2E, as in the building material 1 for fittings of modified example 11 shown in FIG. 12(a). When the thermal expansion member 3 is provided so as to be spaced apart from the end face 2g of the building material body 2E, as in modified example 11, as shown in FIG. 12(b), when the ends of the building material 1 for fittings are joined together to form a fitting, it is possible to prevent the thermal expansion members 3 provided on the building material body 2E from interfering with each other, and there is no impact on the manufacturing process of the fittings.

The thermal expansion member 3 does not necessarily have to be continuous in a straight line, nor does it necessarily have to be provided on the same plane. For example, in the building material 1 for fittings of modified example 12 shown in FIG. 13, the thermal expansion member 3 is provided three-dimensionally for the building material body 2F having an L-shaped cross section in which the first flat plate portion 2F1 and the second flat plate portion 2F2 are provided so as to be perpendicular to each other. That is, in modified example 12, the first thermal expansion portion 3-1 is applied in the longitudinal direction to the surface 2a of the first flat plate portion 2F1, and then the second thermal expansion portion 3-2 is applied on the same surface 2a by changing the application direction by 90° so that they are bent relative to each other. Furthermore, the third thermal expansion portion 3-3 is applied from the second thermal expansion portion 3-2 to the surface 2a of the second flat plate portion 2F2 by changing the application direction by 90°. In this way, by changing the application direction, it is possible to provide a continuous thermal expansion member 3 two-dimensionally or three-dimensionally without being interrupted in the middle.

Some thermally expandable members 3 have different temperatures at which they start expanding. In the building material 1 for fixtures of modified example 13 shown in FIG. 14, two types of thermally expandable members 3A and 3B, which start expanding at different temperatures, are stacked on top of each other on the surface 2a of the building material body 2A. The two types of thermally expandable members 3A and 3B may be applied by applying the first type and then the second type, or they may be applied simultaneously using a nozzle with two outlets. The order of application is preferably such that the upper layer has the lower expansion start temperature. In the example shown, the thermally expandable member 3A of the upper layer is set to have a lower expansion start temperature than the thermally expandable member 3B of the lower layer.

In this way, according to the building material 1 for fittings in which two types of thermal expansion members 3A and 3B with different expansion start temperatures are provided on the surface 2a of the building material body 2A, the thermal expansion members 3A and 3B expand with a time difference, so that it is possible to reliably close gaps that can become a flame penetration hole in a wide temperature range. For example, when the building material body 2A reaches a temperature state of about 200 ° C, the first thermal expansion member 3A with a low expansion start temperature expands first, and the gaps that have occurred up to that point are closed. Even if the temperature of the building material body 2A subsequently rises to about 800 ° C and a new gap is generated due to thermal deformation, the second thermal expansion member 3B with a high expansion start temperature expands to close the gap, which is extremely advantageous in terms of fire prevention. In addition, since the two types of thermal expansion members 3A and 3B are stacked on top of each other, a large space is not required compared to the case where one type of thermal expansion member is provided. However, the two types of thermal expansion members 3A and 3B do not necessarily need to be stacked, and they may be arranged side by side on the left and right. In addition, the thermal expansion members provided in the building material body 2A do not necessarily have to be of two types, and three or more types of thermal expansion members with different expansion start temperatures may be provided adjacent to each other. Furthermore, multiple types of thermal expansion members with different expansion start temperatures do not need to be applied in the same amount, and may be applied in different amounts depending on the application.

Below, we will explain examples of the present invention that use building materials for fixtures with more specific shapes. In all of the examples, the thermal expansion material provided on the building material body is applied in a fluid state as described above and then hardened.

In Example 1 shown in FIG. 15 and Example 2 shown in FIG. 16, the thermal expansion member 3 is applied to the inside of the glass receiving groove 31a in which the surface material 32 such as double-glazed glass is attached in the building material body 31 of the building material for fittings 30 that serves as the bottom frame of a shoji screen. As is clear from the figure, since the thermal expansion member 3 having fluidity is applied, there is an advantage that the thermal expansion member 3 can be installed without gaps even in the recessed corner portion 31b. In addition, since the thermal expansion member 3 in a fluid state has adhesive properties, by placing the setting block SB before it hardens, it is possible to fix the setting block SB to the building material body 31 without the need for a separate adhesive, as shown in Example 1 of FIG. 15. Furthermore, by applying a thermal expansion member 3 that exhibits the desired strength when hardened, it is also possible to make the thermal expansion member 3 function as a setting block without providing a separate setting block, as shown in Example 2 of FIG. 16. In these examples 1 and 2, when the fitting construction material 30 becomes hot, the thermally expandable member 3 expands, blocking the glass housing groove 31a, preventing the opening of a flame from penetrating the fitting construction material 30 in the indoor/outdoor directions.

In the third embodiment shown in FIG. 17, similar to the first embodiment, the thermal expansion member 3 is provided in the hollow portion 30a' of the bottom frame 30' of the shoji screen, which is located on the outer periphery side of the glass receiving groove 31a' that receives the surface material 32. As is clear from the figure, the thermal expansion member 3 cannot be directly applied to the hollow portion 30a' of the bottom frame 30' because the periphery is closed. However, if the thermal expansion member 3 is applied to the reinforcing material 33 to be disposed in the hollow portion 30a' in advance, it is possible to provide the thermal expansion member 3 in the hollow portion 30a' of the bottom frame 30' as shown in the figure. In this third embodiment, the reinforcing material 33 corresponds to the main body of the building material, and the reinforcing material 33 to which the thermal expansion member 3 is applied corresponds to the building material for fittings. Note that when the thermal expansion member is provided as the main body of the building material, it is not necessarily limited to the reinforcing material 33 disposed in the hollow portion 30a'.

In Example 4 shown in FIG. 18, similar to Example 1, the thermal expansion member 3 is applied to the inside of the glass storage groove 31a in the building material body 31 of the building material for fittings 30 that will become the bottom frame of a shoji screen. However, in Example 4, as shown in FIG. 18(a), the thermal expansion member 3 is applied only to both sides avoiding the drainage hole 31c. More specifically, in Example 4, the thermal expansion member 3 is applied so that the plate thickness gradually decreases toward the drainage hole 31c. When applying the thermal expansion member 3 to the recessed corner portion 31b, as shown in FIG. 18(b), the nozzle 10 is positioned so that the discharge port 10a faces the valley of the recessed corner portion 31b, and the thermal expansion member 3 is applied to the building material body 31 from this state. When the thermal expansion member 3 is applied as described above, not only can it be prevented that a gap occurs between the recessed corner portion 31b, but also the surface 3a of the thermal expansion member 3 becomes gradually lower than the drainage hole 31c, so that the application work of the thermal expansion member 3 can be easily performed. In this Example 4, when the building material for fittings 30 becomes in a high temperature state, the thermal expansion member 3 expands to block the glass housing groove 31a, and further the drainage hole 31c becomes blocked, so that it is possible to prevent a situation in which a flame penetration hole occurs in the building material for fittings 30 in the indoor and outdoor directions. During normal use of the fittings, water that has entered the glass housing groove 31a is guided to the drainage hole 31c by the inclined surface 3a of the thermal expansion member 3, and is discharged to the outside through the drainage hole 31c and the lower drainage hole 31d, which is advantageous in terms of drainage and can prevent a situation in which water remains in the glass housing groove 31a for a long period of time. Although the application of the thermal expansion material 3 to the drainage hole 31c is avoided, it is also preferable not to apply the thermal expansion material 3 to the parts that will be joined to other building materials for building fixtures, parts where parts are attached, parts that require processing, etc., when constructing a building fixture. Also, while Examples 1, 2, and 4 show the bottom frame of a shoji screen as an example of the building material for building fixtures 30, it is possible to apply the same to the top frame, vertical frame, or the top, bottom, and vertical frames that make up the frame. Furthermore, the target on which the reinforcing material 33 is provided may be the top frame or vertical frame, or the top, bottom, and vertical frames that make up the frame.

In Example 5 shown in FIG. 19, the thermal expansion member 3 is applied to the inner surface 41c of the groove 41b formed between the opposing wall members 41a in the building material body 41 of the building material for fittings 40 that serves as the door frame of a shoji screen. When applying the thermal expansion member 3 to the inner surface 41c of the groove 41b, the nozzle 10 can be inserted between the wall members 41a in an inclined state. In this case, as shown in FIG. 19(a), by applying a nozzle 10 with an inclined tip, the thermal expansion member 3 can be applied so as to have a constant plate thickness. Also, as shown in FIG. 19(b), by applying a nozzle 10 with a tip that is perpendicular to the axis, it is possible to apply the thermal expansion member 3 so as to have different plate thicknesses. In Example 5, when the building material for fittings 40 becomes a high temperature state, the thermal expansion member 3 expands to close the gap between the frame (not shown), so that it is possible to prevent a situation in which a flame penetration hole occurs in the building material for fittings 40 in the indoor and outdoor directions.

In Example 6 shown in FIG. 20, the thermal expansion member 3 is applied to the inclined surface 51a of the building material body 51 of the building material for fittings 50, which serves as the lower frame. When applying the thermal expansion member 3 to the inclined surface 51a, as shown in FIG. 20(a), if the axis of the nozzle 10 is arranged so as to be perpendicular to the surface 51a, the thermal expansion member 3 can be applied so as to have a constant plate thickness. Also, as shown in FIG. 20(b), if the axis of the nozzle 10 is arranged so as to be inclined with respect to the surface 51a, the thermal expansion member 3 can be applied so as to have different plate thicknesses. In Example 6, when the building material for fittings 50 becomes hot, the thermal expansion member 3 expands to close the gap between the door and the door (not shown), thereby preventing the opening of the flame in the building material for fittings 50 in the indoor and outdoor directions. Although Example 6 illustrates the lower frame as the building material for fittings 50, it may of course be applied to the upper frame or vertical frame.

In Example 7 shown in FIG. 21, Example 8 shown in FIG. 22, and Example 9 shown in FIG. 23, the thermal expansion member 3 is applied to the building material body 61 of the building material for fittings 60 that serves as the door end frame of the door. In Example 7, the thermal expansion member 3 is provided on the inner surface 61a of the building material body 61 that faces the end surface 62a of the door panel 62. The thermal expansion member 3 is a flat plate with a certain thickness and is provided over the entire length of the building material body 61. In Example 8, the thermal expansion member 3 is provided in the recess 61c of the door stopper portion 61b that protrudes from the building material body 61 to the inner side. The recess 61c of the door stopper portion 61b is fitted with a seal member 63 that seals between the door panel 62 and the recess 61c, and is configured with an opening width narrower than the internal width. When the seal member 63 is attached, the thermal expansion member 3 is not exposed to the outside. That is, in Example 8, the seal member 63 is attached so as to cover the thermal expansion member 3 provided in the recess 61c. In Example 9, similar to Example 7, the thermal expansion member 3 is provided on the inner peripheral surface 61a of the building material body 61. However, in Example 9, the thermal expansion member 3 is applied so as to cover the recessed corner 61e between the protrusion 61d protruding from the inner peripheral surface 61a and the inner peripheral surface 61a. The plate thickness of the thermal expansion member 3 is configured to be gradually reduced toward one side (for example, the outside of the room). The surface 3a of the thermal expansion member 3 faces the door panel 62. In these Examples 7 to 9, when the building material for fittings 60 becomes in a high temperature state, the thermal expansion member 3 expands to close the gap between the door panel 62, so that it is possible to prevent a situation in which a flame penetration hole occurs in the building material for fittings 60 in the indoor and outdoor directions. In addition, in Examples 7 to 9, a door frame is used as an example of the building material 60 for fittings, but it can also be applied to the frame on the hanging side, the upper frame, or the lower frame.

In Example 10 shown in FIG. 24, a thermal expansion member 3 is applied to the building material body 71 of the building material 70 for fittings, which serves as the bottom frame of a door. In Example 10, the thermal expansion member 3 is applied to the gap (recess) 71c between the inner peripheral surface 71a of the building material body 71 and the door stopper 71b protruding from the inner peripheral surface 71a of the building material body 71 to the inner peripheral side. More specifically, the door stopper 71b in Example 10 protrudes from the edge of one side (e.g., the inside of the room) on the inner peripheral surface 71a of the building material body 71, and has a protruding portion 71d that protrudes toward the other side (e.g., the outside of the room) at the protruding edge. The protruding portion 71d is for forming a recess 71e for mounting a seal member 73 that seals between the door panel 72. A groove-shaped gap 71c is secured between the protruding portion 71d and the inner peripheral surface 71a of the building material body 71. The thermal expansion member 3 is applied to the gap 71c between the inner peripheral surface 71a of the building material body 71 and the protruding portion 71d. In Example 10, when the sealing member 73 is attached to the recess 71e, the thermal expansion member 3 is not exposed to the outside. In this Example 10, when the building material for fittings 70 becomes hot, the thermal expansion member 3 expands to close the gap between the door panel 72, thereby preventing the opening of a flame in the building material for fittings 70 from being generated in the indoor and outdoor directions. In Example 10, the bottom frame of a door is exemplified as the building material for fittings, but it may also be applied to the top frame or vertical frame of a door.

In Example 11 shown in FIG. 25, the thermal expansion member 3 is applied to the outer peripheral surface of the building material body 81 of the building material for fittings 80 that serves as the surface material of a shoji screen. The building material body 81 is a double-glazed glass in which two glass sheets 81B are laminated via a spacer 81A. The spacer 81A is, for example, an aluminum cylinder 81A1 filled with a desiccant 81A2 inside, and is bonded to each glass sheet 81B via the cylinder 81A1. Furthermore, a sealing material 81C is filled in the part that is on the outer peripheral side of the spacer 81A. The sealing material 81C is made of resin and is bonded to the spacer 81A and the two glass sheets 81B. The thermal expansion member 3 is applied so as to cover the sealing material 81C and the outer peripheral surface 81a of the two glass sheets 81B. A frame is attached to the building material body 81 on all four sides to form a shoji screen. When attaching the frame, the thermal expansion member 3 may function as a setting block as described above. When the thermal expansion member 3 is provided on a double-glazed building material body 81, it is not necessarily required to cover the outer peripheral surface 81a of the building material body 81. For example, instead of the above-mentioned sealing material 81C, the thermal expansion member 3 may be applied so as to come into contact with the spacer 81A and the surfaces of the two glass sheets 81B.

In the above-mentioned embodiment, examples of building materials for fittings are those that become frames and stiles, and those that become the surface material of shoji screens, but the present invention is not limited to these, and other items that make up fittings may be used. For example, friction stays and hinges that support shoji screens on frames so that they can be opened and closed, and even reinforcing materials attached to frames and stiles may each be used as building materials for fittings to which a thermal expansion material is applied. Furthermore, building materials for fittings are not necessarily limited to those that support shoji screens or door panels so that they can be opened and closed, and may be, for example, those that form shutter frames that support shutters.

As described above, the building material for fixtures according to the present invention is characterized in that a thermally expandable member that is applied in a fluid state and hardened is provided on a building material body molded from metal or resin.
According to this invention, since the fluid thermal expansion material is applied to the building material body and hardened, even if the surface of the building material body has protrusions such as screws or projections, or even in a part that is configured as an internal corner, the thermal expansion material can be installed without creating gaps. Therefore, there is no risk of the thermal expansion material peeling off and falling off over time, and it is possible to improve fire resistance.

The present invention is also characterized in that, in the above-mentioned building material for fixtures, the thermally expandable member is provided in a groove-shaped recess provided in the building material body.
According to this invention, by providing a thermal expansion member in the recess, the position of the thermal expansion member is always the same, making it possible to easily manufacture building materials for fittings with consistent quality.

Furthermore, the present invention is characterized in that in the above-mentioned building material for fittings, the recess is configured so that the opening width is narrower than the interior width.
According to this invention, since the internal dimensions of the recess are large relative to the opening width, it becomes possible to more reliably prevent the thermally expandable member from falling off from the building material body.

The present invention is also characterized in that in the above-mentioned building material for fixtures, the thermally expandable member is provided in the recess in which the sealing member is attached.
According to this invention, since there is no need to form a dedicated recess for accommodating the thermal expansion member, it is possible to prevent the shape of the building material body from becoming complicated and to facilitate the molding of the building material.

The present invention is also characterized in that in the above-mentioned building material for fixtures, the thermally expandable member is provided in the recess in which the facing material is attached.
According to this invention, since there is no need to form a dedicated recess for accommodating the thermal expansion member, it is possible to prevent the shape of the building material body from becoming complicated and to facilitate the molding of the building material.

The present invention is also characterized in that, in the above-mentioned building material for fixtures, two guide members are provided on the building material body, and the thermally expandable member is provided between these two guide members.
According to this invention, the thermal expansion member is also bonded to the guide member, so that it is possible to prevent the thermal expansion member from falling off the building material body.

The present invention is also characterized in that, in the above-mentioned building material for fixtures, the thermally expandable members are provided in different plate thicknesses from the surface of the building material body.
According to this invention, the thermally expandable member can be made directional when it expands, which has the advantage that it is possible to more reliably close gaps that could serve as openings for flames to penetrate.

The present invention is also characterized in that, in the above-mentioned building material for fixtures, the thermally expandable member is provided so that the plate thickness gradually decreases toward a drainage hole provided in the building material body.
According to this invention, the inclination of the thermal expansion member makes it possible to guide water to the drain hole, thereby improving drainage performance.

The present invention is also characterized in that, in the above-mentioned building material for fixtures, the thermally expandable member is provided in an internal corner portion provided in the building material body.
According to this invention, since the thermally expandable member contacts the two faces of the building material body that form the inside corner portion, the bonding strength between the thermally expandable member and the building material body can be improved.

The present invention is also characterized in that, in the above-mentioned building material for fixtures, a fixed-shape thermal expansion member is attached to the building material body to which the thermal expansion member is applied.
According to this invention, the amount of expansion of the thermally expandable member can be increased in a desired portion, and gaps can be more reliably closed.

The present invention is also characterized in that, in the above-mentioned building material for fixtures, the heat-expandable member has a first heat-expandable member and a second heat-expandable member which expand at different temperatures, and the first heat-expandable member and the second heat-expandable member are arranged adjacent to each other.
According to this invention, the thermally expandable member expands with a time lag, making it possible, for example, to seal gaps between a state in which the thermal deformation of the building material body is small and the subsequent expanded state, which is extremely advantageous in terms of fire resistance.

The present invention is also characterized in that, in the above-mentioned building material for fixtures, the first thermally expandable member has an expansion start temperature set lower than that of the second thermally expandable member, and is arranged so as to overlap the surface of the second thermally expandable member.
According to the present invention, it is possible to provide two types of thermal expansion members without requiring a large space.

Furthermore, the present invention is characterized in that, in the above-mentioned building material for fixtures, the thermally expandable member is provided intermittently so as to be separated midway.
According to the present invention, it is possible to set a drainage path so as to cross the thermal expansion member.

The present invention is also characterized in that, in the above-mentioned building material for fixtures, the thermally expandable member is provided with its end separated from the end face of the building material body.
According to the present invention, it is possible to prevent the thermally expandable members from interfering with each other when joining a plurality of building material bodies.

The building material for fixtures according to the present invention is characterized in that a thermally expandable material is applied in a fluid state and hardened on the outer periphery of the building material body configured in a plate shape.
According to the present invention, it is possible to prevent gaps from occurring in the outer peripheral area of the plate-shaped building material body.

The present invention is also characterized in that, in the above-mentioned building material for fixtures, the building material body is a double-glazed glass having a plurality of glass plates laminated with spacers interposed therebetween, and the thermal expansion member is provided in a sealing material filled in the outer periphery of the spacer between the glass plates.
According to this invention, it is possible to close the gap between the insulating glass and the frame without providing a thermal expansion member on the frame side.

In addition, the manufacturing method of building materials for fixtures according to the present invention is characterized in that a thermally expandable material in a fluid state is applied to a building material body molded from metal or resin, and then the thermally expandable material is hardened.
According to this invention, since the fluid thermal expansion material is applied to the building material body and hardened, even if the surface of the building material body has protrusions such as screws or projections, or even in a part that is configured as an internal corner, the thermal expansion material can be installed without creating gaps. Therefore, there is no risk of the thermal expansion material peeling off and falling off over time, and it is possible to improve fire resistance.

Furthermore, the present invention is characterized in that in the manufacturing method of the above-mentioned building material for fittings, the thermally expandable member is applied in a state where the plate thickness from the surface of the building material body is different.
According to this invention, it is possible to provide directionality in the direction in which the thermally expandable member expands, and it is possible to more reliably close gaps that could become holes through which flames can penetrate.

Furthermore, the present invention is characterized in that in the manufacturing method of the above-mentioned building material for fixtures, a nozzle is placed at an angle to the surface of the building material body, and the thermally expandable member is applied from the nozzle.
According to this invention, it becomes possible to easily apply the thermally expandable material to the building material body when the thickness from the surface of the body varies.

Furthermore, the present invention is characterized in that in the manufacturing method for a building material for fittings described above, the thermally expandable member is applied from a nozzle having an inclined tip.
According to this invention, it becomes possible to easily apply the thermally expandable material to the building material body in a state where the plate thickness from the surface thereof is different.

Furthermore, the present invention is characterized in that in the manufacturing method for the building material for fittings described above, the applied thermally expandable member is shaped before it hardens.
According to the present invention, since the applied thermal expansion material can be adjusted to a desired shape before it hardens, it is possible to provide a thermal expansion material of any shape suitable for the application.

The present invention is also characterized in that, in the above-mentioned method for manufacturing building materials for fixtures, a nozzle is positioned so that its outlet faces a valley in an inside corner portion provided in the building material body, and the thermally expandable material is applied to the inside corner portion from the nozzle.
According to this invention, since the thermally expandable material is applied with the discharge port facing the inside corner, it is possible to more reliably prevent the occurrence of a gap between the building material body and the thermally expandable material.

Furthermore, the present invention is characterized in that in the manufacturing method of the building material for fittings described above, the thermally expandable member is cut to a desired length in a state in which the thermally expandable member is applied.
According to this invention, it is possible to provide a thermal expansion member without gaps over both ends of the building material body without matching the longitudinal dimensions of the thermal expansion member to the dimensions of the building material body.

1, 30, 40, 50, 60, 70, 80 Building materials for fixtures, 2A, 2B, 2C, 2D, 2E, 2F, 31, 41, 51, 61, 71, 81 Building material body, 2a, 51a, 61a Surface, 2b, 2c, 2d, 2e, 2f, 61c, 71e Recess, 2g End face, 3, 3', 3A, 3B Thermal expansion member, 4a, 4b Guide member, 10 Nozzle, 10a Discharge port, 31a Glass storage groove, 31b, 61e Corner, 31c Drain hole, 32 Face material, 41c Inner surface, 63, 73 Sealing member, 71c Gap, 81A Spacer, 81B Glass plate, 81C Sealing material

Claims (1)

A groove-shaped recess is provided in a building material body molded from metal or resin,
The recess has both side surfaces that are inclined toward the opening so as to approach each other and reach the opening edge, and the opening width is narrower than the internal width,
A building material for fittings, characterized in that the recesses are filled with a thermally expandable material that is applied in a fluid state and hardened.

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