Opening building materials

Abstract

To provide an opening building material equipped with a user-friendly backup material.SOLUTION: The opening building material comprises a frame 1, a glass 2 supported on the frame 1, a backup material 3, and a sealant 4. The frame 1 has a glass attaching groove 11 whose inner peripheral side is opened. The backup material 3 inserted into a gap (a) between an outdoor or indoor side surface of the glass 2 and one side wall 17a of the glass attaching groove 11 has a main part 5, a narrow part 6 smaller in prospective size than the main part 5, and fin pieces 7 and 7 provided in the outdoor and indoor side surfaces of the narrow part 6. The fin pieces 7 and 7 can take a state of projecting to the outdoor and indoor sides more than the main part 5 and a state of being stored in portions 19 and 19 smaller in prospective size than the main part 5 on the outdoor and indoor sides of the narrow part 6. The sealant 4 is provided on the inner peripheral side of the backup material 3.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a building material for an opening that is attached to an opening in a building. [Background technology]

[0002] Conventionally, when a glass is held in a glass mounting groove of a frame, a back-up material is inserted into the back side of the gap between the side wall of the glass mounting groove and the glass, and then a sealing material is filled on the inner peripheral side of the back-up material. Summary of the Invention [Problem to be solved by the invention]

[0003] In view of the above-mentioned circumstances, an object of the present invention is to provide a building material for openings that is equipped with an easy-to-use backup material. [Means for solving the problem]

[0004] In order to achieve the above object, the opening construction material according to the invention described in claim 1 comprises a frame, glass supported by the frame, a backup material, and a sealing material, the frame has a glass mounting groove that opens on the inner circumference side, the backup material is inserted into the gap between the exterior or interior side of the glass and one side wall of the glass mounting groove, the backup material has a main part, a narrow part with a smaller projected dimension than the main part, and fin pieces provided on the exterior and interior sides of the narrow part, the fin pieces can be in a state where they protrude from the main part to the exterior and interior sides, or in a state where they are stored in the part of the narrow part with a smaller projected dimension than the main part on the exterior and interior sides, and the sealing material is provided on the inner circumference side of the backup material. The frame referred to here includes not only vertical and horizontal frames, but also mullions, mullions, and frames of shoji screens. Effect of the Invention

[0005] In the building material for openings according to the invention recited in claim 1, the back-up material has a main portion, a narrow portion whose projected dimensions are smaller than those of the main portion, and fin pieces provided on the exterior and interior sides of the narrow portion, and the fin pieces can be in a state where they protrude further toward the exterior and interior sides than the main portion, or in a state where they are stored in the portion of the narrow portion whose projected dimensions are smaller than those of the main portion on the exterior and interior sides, making it easy to insert the back-up material into the gap between the exterior or interior side of the glass and one side wall of the glass mounting groove, and the fin pieces can prevent the back-up material from falling out even if the gap is somewhat wide, making the back-up material easy to use. And because the back-up material can be easily inserted and prevented from falling out, workability is improved when mounting the glass to the frame. [Brief description of the drawings]

[0006] [Figure 1] FIG. 1 is a vertical cross-sectional view showing the state in which a backup material has been inserted into the glass mounting groove of the frame, where (a) shows the case in which the dimension of the gap between the interior side of the glass and the interior side wall of the glass mounting groove is as designed, and (b) shows the case in which the dimension of the same gap is slightly wider than as designed. [Diagram 2] FIG. 1 is a vertical cross-sectional view showing one embodiment of a building material for openings of the present invention. [Diagram 3] FIG. 2 is a cross-sectional view of the same building material for an opening. [Figure 4] FIG. 2 is an enlarged cross-sectional view of a backup material used in the building material for the opening. [Diagram 5] FIG. 4 is an enlarged cross-sectional view showing another embodiment of a back-up material for a building material for openings according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0007] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Figures 1 to 3 show one embodiment of the building material for openings of the present invention. This building material for openings is applied to a fixed window for a building, and has a frame 1 to be attached to an opening in a building frame, and glass 2 housed within the frame 1, as shown in Figures 2 and 3.

[0008] 2 and 3, the frame 2 is composed of an upper frame 8, a lower frame 9, and left and right vertical frames 10, 10 formed from extruded aluminum alloy material, which are arranged in a rectangular shape. The upper frame 8, the lower frame 9, and the left and right vertical frames 10, 10 each have a glass mounting groove 11 that is open on the inner periphery side.

[0009] As shown in FIG. 2, the sill 9 has a setting block 13 attached to the bottom wall 12 of the glass mounting groove 11, which receives the glass 2. At the open end of the exterior wall 14 and the interior wall 15 of the glass mounting groove 11, holder parts 16, 17 with a generally C-shaped cross section are formed facing each other. A bead 18, which is a fixed-shaped sealing material, is attached to the exterior holder part 16, and the bead 18 abuts against the exterior side of the glass 2. A backup material 3 is inserted and held at the back side of the gap between the exterior wall 17a of the interior holder part 17 and the interior side of the glass 2, and a wet sealant 4 is filled on the inner periphery of the backup material 3. In this way, the sill 9 is held in the glass mounting groove 11 by clamping the end of the glass 2 between the exterior bead 18 and the interior backup material 3 and sealant 4.

[0010] Like the lower frame 9, the upper frame 8 is held in the glass mounting groove 11 by clamping the end of the glass 2 between a bead 18 on the outside of the room and a backup material 3 and sealing material 4 on the inside of the room. As shown in Figure 3, in the same way as the upper frame 8 and lower frame 9, the vertical frame 10 has the end of the glass 2 sandwiched between a bead 18 provided on the outside of the room and a backup material 3 and sealing material 4 provided on the inside of the room, and is held in the glass mounting groove 11. The indoor side wall of the glass mounting groove 11 of the vertical frame 10 is a removable ledge 20, which does not have a holder portion 17 like the lower frame 9.

[0011] The backup material 3 is formed by extrusion molding of synthetic resin or synthetic rubber, for example polyvinyl chloride resin. As shown in Fig. 4, the backup material 3 has a main portion 5 with a substantially rectangular cross section, a narrow portion 6 provided on the inner periphery of the main portion 5 and having a smaller projected dimension than the main portion 5, and fin pieces 7, 7 provided on the exterior side and the interior side of the narrow portion 6, and is symmetrical on the left and right. The fin pieces 7, 7 are provided at an inverted V-shape so that they spread outward toward the inner periphery. The main portion 5 has a projected dimension A that is the same as or slightly smaller than the gap dimension B (see Figure 2) between the indoor side of the glass 2 and the indoor side wall of the glass mounting groove 11 (the outdoor side wall 17a of the holder portion 17 in the upper frame 8 and lower frame 9, and the push-in edge 20 in the vertical frame 10). Specifically, the gap dimension B between the indoor side of the glass 2 and the indoor side wall 17a of the glass mounting groove 11 is designed to be 5 mm, and the projected dimension A of the main portion is 4.8 mm. The projected dimension C of the backup material 3 with the fin pieces 7, 7 open outward is larger than the gap dimension B between the indoor side of the glass 2 and the indoor side walls 17a, 20 of the glass mounting groove 11, specifically 6.4 mm. The thickness of the fin piece 7 is approximately the same as the projected dimension of a portion 19 whose projected dimension is smaller than that of the main part 5 on the outdoor side and indoor side of the narrow portion 6, and the length is such that when the fin piece 7 is bent to fit along the outdoor side and indoor side of the narrow portion 6, its tip does not protrude from the inner peripheral side of the backup material 3.

[0012] Next, a description will be given of the procedure for attaching the glass 2 to the frame 1. First, the setting block 13 is placed at a predetermined position on the bottom wall 12 of the glass attachment groove 11 of the lower frame 9. Next, the bead 18 is attached to the holder portion 16 on the exterior side of the glass mounting groove 11 of the upper frame 8, lower frame 9 and vertical frame 10. The batten 20 on the interior side of the vertical frame 10 is removed in advance. In this state, the glass 2 is fitted vertically from the inside of the room between the glass mounting groove 11 of the upper frame 8 and the glass mounting groove 11 of the lower frame 9, and then a batten 20 is attached to the vertical frames 10,10. Next, as shown in Fig. 1, the backup material 3 is inserted from the inner periphery into the gap a between the indoor side of the glass 2 and the indoor side walls 17a, 20 of the glass mounting groove 11 of the frame 1. Fig. 1(a) shows the case where the gap dimension B between the indoor side of the glass 2 and the indoor side walls 17a, 20 of the glass mounting groove 11 is as designed, and in this case the fin pieces 7, 7 fit exactly into the portions 19, 19 of the narrow portion 6 whose projected dimensions are smaller than the main portion 5 on the outdoor and indoor sides, and the fin pieces 7, 7 are flush with the outdoor and indoor sides of the main portion 5. In addition, the tips of the fin pieces 7, 7 are flush with the inner periphery of the backup material 3, and as a result, a flat surface 21 for receiving the sealant 4 is formed between the indoor side of the glass 2 and the indoor side walls 17a, 20 of the glass mounting groove 11. The gap dimension B between the indoor side of the glass 2 and the indoor side walls 17a, 20 of the glass mounting groove 11 may vary slightly (especially on the vertical frame 10 side where the indoor side wall of the glass mounting groove 11 is the ridge 20), and Fig. 1(b) shows a case where the gap dimension B between the indoor side of the glass 2 and the indoor side walls 17a, 20 of the glass mounting groove 11 is slightly larger than designed. Even in this case, the backup material 3 can prevent the glass 2 from falling out by having the indoor and outdoor fin pieces 7, 7 brace themselves between the indoor side of the glass 2 and the indoor side walls 17a, 20 of the glass mounting groove 11. Also in this case, as in the case of Fig. 1(a), a surface 21 for receiving the sealant 4 is formed flat between the indoor side of the glass 2 and the indoor side walls 17a, 20 of the glass mounting groove 11. Thereafter, the sealant 4 is filled into the gap a between the indoor side surface of the glass 2 on the inner periphery of the back-up material 3 and the indoor side walls 17a, 20 of the glass mounting groove 11. As described above, by inserting this back-up material 3, a flat surface 21 for receiving the sealant 4 is formed between the indoor side surface of the glass 2 and the indoor side walls 17a, 20 of the glass mounting groove 11, making it easy to fill the sealant 4.

[0013] Figure 5 shows another embodiment of the backup material 3. In this backup material 3, a narrow width portion 6 is provided in the middle in the inner and outer periphery directions, and fin pieces 7, 7 are provided on the exterior and interior sides of the narrow width portion 6, slanting toward the inner periphery. As with the previously explained Figure 4, the fin pieces 7, 7 can be stored in portions 19, 19 on the exterior and interior sides of the narrow width portion 6 that have smaller projected dimensions than the main portion 5. 4, the back-up material 3 of this embodiment can be easily inserted into the glass mounting groove 11 and prevented from falling off. Since the inner peripheral side surface of the back-up material 3 is originally formed flat, it is also easy to fill with the sealing material 4.

[0014] As described above, in this opening building material, the backup material 3 has the main portion 5, the narrow portion 6 having a smaller projected dimension than the main portion 5, and the fin pieces 7, 7 provided on the exterior and interior sides of the narrow portion 6, and the fin pieces 7, 7 can be in a state where they protrude from the main portion 5 toward the exterior and interior sides, or in a state where they are stored in the portions 19, 19 of the narrow portion 6 having a smaller projected dimension than the main portion 5 on the exterior and interior sides. Therefore, the backup material 3 is easy to insert into the gap a between the exterior or interior side of the glass 2 and one side wall of the glass mounting groove 11 (the exterior wall 17a of the holder portion 17, the ridge 20), and the fin pieces 7, 7 can prevent the backup material 3 from falling off even if the gap a is somewhat widened, so that the backup material 3 is easy to use. Furthermore, because the backup material 3 can be easily inserted and the backup material 3 can be prevented from falling off, the workability of attaching the glass 2 to the frame 1 is improved. In this opening building material, by inserting the backup material 3 into the glass mounting groove 11, a flat surface 21 for receiving the sealant 4 is formed between the exterior or interior side of the glass 2 and one side wall 17a, 20 of the glass mounting groove 11, making it easy to fill the sealant 4. Furthermore, with this opening building material, when the fin pieces 7, 7 are stored in the portions 19, 19 on the outdoor side and indoor side of the narrow portion 6, which have smaller projected dimensions than the main portion 5, the surface 21 that receives the sealing material 4 is formed flat, so that the ease of insertion of the backup material 3 and the prevention of it falling out are maintained, while the fin pieces 7, 7 do not get in the way when filling the sealing material 4, making it easier to fill the sealing material 4, and thus further improving the usability of the backup material 3. Furthermore, with this opening building material, when the fin pieces 7, 7 are stored in the portions 19, 19 on the outdoor and indoor sides of the narrow portion 6 which have smaller projected dimensions than the main portion 5, the fin pieces 7, 7 are flush with the outdoor and indoor sides of the main portion 5, making it easy to insert the backup material 3 into the gap a between the outdoor or indoor side of the glass 2 and one side wall 17a, 20 of the glass mounting groove 11, and once inserted, the backup material 3 can be stably held in the gap a.

[0015] The present invention is not limited to the above-described embodiment. The material and cross-sectional shape of the frame and the material and cross-sectional shape of the backup material can be changed as appropriate. The backup material and sealing material may be provided on the exterior side of the glass, or on both the exterior and interior sides of the glass. The glass may be double-glazed. The present invention is not limited to fixed windows, but can be applied to all types of windows, such as casement windows, sliding windows, and double-sliding windows. In other words, the backup material according to the present invention may be used to hold the glass in the glass mounting groove of the frame of a shoji screen. [Explanation of symbols]

[0016] 1 slot 2. Glass 3. Backup materials 4. Sealant 5 Main part 6 Narrow part 7 Fins 11 Glass mounting groove

Claims

[Claim 1] a back-up material provided on the inner periphery of the back-up material, the back-up material being inserted into a gap between the exterior or interior side of the glass and one side wall of the glass mounting groove, the back-up material having a main portion, a narrow portion having a smaller projected dimension than the main portion, and fin pieces provided on the exterior and interior sides of the narrow portion, the fin pieces being capable of protruding beyond the main portion toward the exterior and interior sides, or being stored in a portion of the narrow portion on the exterior and interior sides which has a smaller projected dimension than the main portion, the sealing material being provided on the inner periphery of the back-up material.

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