sash

Abstract

To provide a sash which can be mounted in an opening of a PC board and to which accessories can be easily mounted at a construction site.SOLUTION: Disclosed is a sash 1 including a sash frame 10 mounted on an opening a precast concrete plate 2. The sash frame 10 has indoor side width pieces 114, 124 as mounting pieces for mounting angle members 61, 62 as separate accessory parts on the surface side by drill screws 64. Spacers 15 into which the drill screws 64 can be inserted are mounted on the rear surfaces of the indoor side width pieces 114, 124.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a sash having a sash frame that is fixed to an opening in a PC (precast concrete) plate. [Background technology]

[0002] BACKGROUND ART Conventionally, a method is known in which concrete is poured using a sash frame as a formwork to produce a PC board with the sash frame fixed to an opening (see, for example, Patent Document 1). In Patent Document 1, in addition to the sash frame, a frame is also used as a formwork and is fixed to the poured concrete. Because this frame protrudes from the PC board, there is a risk of damage when the PC board is transported to the construction site of a building or other structure. For this reason, attempts have been made to attach accessories such as frames to the sash frame at the construction site of the building. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 9-209654 Summary of the Invention [Problem to be solved by the invention]

[0004] However, because the back side of the sash frame is filled with concrete, when screwing accessories to the sash frame, it is necessary to drill holes in the concrete behind the sash frame where the tip of the screw will be placed. In other words, it is necessary to perform hole drilling work using a concrete drill at the construction site, which increases the amount of work required for the construction work and reduces workability.

[0005] An object of the present invention is to provide a sash that can be attached to an opening in a PC board and to which accessories can be easily attached at the construction site. [Means for solving the problem]

[0006] The present invention is a sash having a sash frame that is attached to an opening in a precast concrete slab, characterized in that the sash frame has an attachment piece to which a separate accessory part can be attached on the front side with a screw, and a spacer into which the screw can be inserted is attached to the back side of the attachment piece. [Effects of the Invention]

[0007] According to the present invention, it is possible to provide a sash that can be attached to an opening in a precast concrete panel and to which accessories can be easily attached at the construction site. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a vertical cross-sectional view showing a sash of a first embodiment. [Figure 2] FIG. 1 is a cross-sectional view showing a sash of a first embodiment. [Figure 3] 1A to 1D are diagrams showing an example of an anchor part attached to a sash, in which (A) is a plan view, (B) is a left side view, (C) is a front view, and (D) is a right side view. [Figure 4] FIG. 2 is a longitudinal cross-sectional view showing a PC board to which a sash according to the first embodiment is attached. [Figure 5] 1 is a cross-sectional view showing a main part of a PC board to which a sash according to a first embodiment is attached. [Figure 6] FIG. 10 is a longitudinal cross-sectional view showing a PC board to which a sash according to a second embodiment is attached. [Figure 7] FIG. 10 is a cross-sectional view showing the main part of a PC board to which a sash of a second embodiment is attached. [Figure 8] FIG. 10 is a longitudinal cross-sectional view showing a PC board to which a sash according to a third embodiment is attached. DETAILED DESCRIPTION OF THE INVENTION

[0009] [First embodiment] A sash 1 according to a first embodiment of the present invention will be described below with reference to Figures 1 to 5. In each figure, hatching showing a cross section of the sash 1 has been omitted to make the drawings easier to see. As shown in FIGS. 4 and 5, the sash 1 is fixed to an opening in a precast concrete plate (PC plate) 2.

[0010] As shown in FIGS. 1 and 2, the sash 1 is a sash for a fixed window, and is configured to include a sash frame 10 and glass 20. The sash frame 10 is configured by assembling an upper frame 11, a lower frame 12, and left and right vertical frames 13 into a rectangular frame shape. The upper frame 11 has a recessed piece 110, an exterior holding piece 111, an exterior sight piece 113, and an interior sight piece 114. The projection piece 110 comprises a first projection piece 1101 facing the upper end surface of the glass 20, and a second projection piece 1102 continuing from the interior end of the first projection piece 1101 via a screw hole portion. The first projection piece 1101 and the second projection piece 1102 are formed with engagement pieces 1104 and 1105 with which the pressing edge 14 engages. The exterior holding piece 111 extends downward from the exterior edge of the first recess piece 1101 and is positioned on the exterior side of the glass 20. The outdoor spotting piece 113 extends from near the upper end of the outdoor holding piece 111 to the outdoor side and then extends upward. A protruding piece 1131 protrudes from the upper edge of this outdoor spotting piece 113 toward the indoor side. The indoor side sight piece 114 extends upward from the indoor side edge of the second sight piece 1102. A protruding piece 1141 protrudes from the upper edge of this indoor side sight piece 114 toward the outdoor side.

[0011] The lower frame 12 has a recessed piece 120, an exterior holding piece 121, an interior holding piece 122, an exterior sight piece 123, and an interior sight piece 124. The visible piece 120 comprises a horizontal surface portion 1201 arranged opposite the lower end surface of the glass 20, an inclined piece portion 1202 inclined diagonally upward from the indoor side edge of the horizontal surface portion 1201, and an extension portion 1203 extending from the indoor side edge of the inclined piece portion 1202 toward the indoor side. The exterior holding piece 121 extends upward from the exterior edge of the recessed piece 120 and is positioned on the exterior side of the glass 20. The indoor side retaining piece 122 comprises a connecting piece portion 1221 extending upward from the indoor side edge of the projection piece 120, i.e., the extension portion 1203, and a retaining piece portion 1222 extending from the upper end of the connecting piece portion 1221 to the outdoor side, and the retaining piece portion 1222 is positioned on the indoor side of the glass 20 opposite the outdoor side retaining piece 121.

[0012] The exterior sight piece 123 comprises a hanging piece portion 1231 extending downward from the middle position in the projection direction of the horizontal surface portion 1201 of the sight piece 120, an inclined piece portion 1232 extending diagonally downward from the lower end of the hanging piece portion 1231 toward the outside of the room, an exterior surface portion 1233 extending downward from the exterior edge of the inclined piece portion 1232, a connecting piece portion 1234 extending toward the inside of the room from the lower end of the exterior surface portion 1233, and a fixed piece portion 1235 extending downward from the interior edge of the connecting piece portion 1234. A screw hole portion 1236 is formed on the underside of the inclined piece portion 1232, and a protruding piece 1237 protrudes from the screw hole portion 1236 toward the interior side of the room.

[0013] The interior spot piece 124 extends downward from the interior edge of the spot piece 120, i.e., the extension portion 1203. A protruding piece 1241 protrudes from the lower edge of this interior spot piece 124 toward the exterior of the room.

[0014] As shown in FIG. 2, each vertical frame 13 has a symmetrical structure and includes a recessed piece 130, an exterior holding piece 131, an exterior sight piece 133, and an interior sight piece 134. The projection piece 130 is formed along the projection direction of the sash 1, and on the surfaces facing both the left and right end surfaces of the glass 20, engagement pieces 1301 and 1302 with an L-shaped cross section are formed with which the pressing edge 14 engages. The exterior retaining piece 131 extends from near the exterior edge of the projection piece 130 toward the inner periphery in the viewing direction, i.e., toward the other vertical frame 13 arranged opposite, and is positioned on the exterior side of the glass 20. The exterior spot piece 133 extends outward from the exterior edge of the spot piece 130. A protruding piece 1331 protrudes from the outer peripheral edge of this exterior spot piece 133 toward the interior side of the room. The indoor spot piece 134 extends outward from the indoor-side edge of the spot piece 130. A protruding piece 1341 protrudes from the outer peripheral edge of this indoor spot piece 134 toward the outdoor side.

[0015] The glass 20 is double-glazed and is held between the exterior holding pieces 111, 121, 131 and the ledge 14 and the interior holding piece 122 via a backup material 21 and a sealing material 22. The glass 20 is placed on a setting block 23 arranged on the upper surface of the recessed piece 120 of the sill 12. The glass 20 of a fixed window is usually attached to the sash 1 at the construction site of a building, and is not attached when the sash 1 is shipped from the assembly factory or at the PC board manufacturing factory described below. On the other hand, if the sash is not a fixed window but has a sash frame and a movable shoji screen, such as a vertical sliding window, the movable shoji screen is shipped attached to the sash frame. In this case, the handle and lock of the movable shoji screen are also shipped attached to the sash frame. It is preferable to ship the handle and lock protected with masking tape to prevent them from getting dirty when the concrete is poured.

[0016] Spacers 15 are attached to the exterior surfaces of the interior facing pieces 114, 124, and 134 of the upper frame 11, lower frame 12, and vertical frame 13 to ensure that space is not filled with concrete when the concrete is poured, as described below. The spacer 15 is made of a material that allows the tip of a screw to be threaded into the indoor-side sight pieces 114, 124, 134 from the indoor side, and is also made of a non-flammable material, such as rock wool or glass wool. In this embodiment, the spacer 15 is made of AES (alkaline earth silicate wool). Here, a material into which a screw can be screwed is any material that does not hinder the tip of the screw protruding from the indoor side sight piece 114, 124, 134 from being screwed into the indoor side sight piece 114, 124, 134 from the indoor side. Furthermore, the non-combustible material may be any material that satisfies the requirements for being recognized as a non-combustible material under the Building Standards Act.

[0017] Each spacer 15 is provided over the entire longitudinal length of the upper frame 11, the lower frame 12, and the vertical frame 13. The cross-sectional size of each spacer 15 is determined depending on the shape of the frame to which the spacer 15 is attached, the attachment position, etc. These spacers 15 have adhesive surfaces protected by release paper, and are attached by peeling off the release paper and pressing the adhesive surfaces against the interior sight pieces 114, 124, 134. In this embodiment, the spacers 15 attached to the upper frame 11 and the vertical frame 13 are positioned in the sight direction by abutting against the protruding pieces 1141, 1341. The spacers 15 attached to the lower frame 12 are positioned in the sight direction by abutting against the inclined piece portion 1202 and the extending portion 1203 of the sight piece 120.

[0018] Anchor parts 30, 30A are attached to the sash frame 10 to improve the fixing strength with the concrete when concrete is poured around the sash frame 10 as will be described later. The anchor part 30 is a metal piece material attached to a plurality of locations on the upper frame 11 and the vertical frame 13. For example, in this embodiment, the anchor part 30 is attached to the upper frame 11 at two locations and to the vertical frame 13 at three locations. The anchor part 30A is a metal piece material attached to the lower frame 12 at multiple locations, for example, at two locations.

[0019] 3, the anchor part 30 includes an anchor 31 that is fastened to the upper frame 11 and the vertical frame 13, a connecting member 32 welded to the anchor 31, and a driving-in anchor 33 that is rotatably connected to the connecting member 32 with a rivet 34. A washer 35 is disposed between the rivet 34 and the driving-in anchor 33. The anchor 31 includes a pair of engaging claws 311 that engage with the protruding pieces 1131, 1141, 1331, and 1341, and a bent piece 312 that is bent by cutting and raising or the like. The connecting member 32 is bent into an L-shape and includes a fixing piece 321 fixed to the bent piece 312 by welding, and a connecting piece 322 perpendicular to the fixing piece 321. The driving-in anchor 33 is bent into an L-shape and includes a connecting piece 331 rotatably connected to the connecting piece 322 by a rivet 34 , and a fixing piece 332 perpendicular to the connecting piece 331 . The anchor part 30A attached to the lower frame 12 has the same configuration as the anchor part 30 attached to the upper frame 11 and the vertical frame 13, except that it uses an anchor 31A with a shape that corresponds to the position of the protrusions 1237 and 1241 on the lower frame 12, so no explanation will be given here.

[0020] The sash 1 is assembled at a sash assembly factory, and the spacer 15 and anchor part 30 are also attached. The assembled sash 1 is then shipped to a precast concrete panel (hereinafter referred to as PC panel) manufacturing factory. When the sash 1 is shipped, the driving anchor 33 of the anchor 31 is held in a tilted position, as shown in Figures 1 and 2.

[0021] At a PC board manufacturing factory, the sash frame 10 of the sash 1 is attached to a formwork for manufacturing the PC board. At this time, the sash frame 10 is used as part of the formwork for the opening of the PC board, and the formwork is provided continuously with the sash frame 10. As shown in Figs. 4 and 5, reinforcing bars 41 are placed inside the formwork. The reinforcing bars 41 are configured to include main reinforcements 42 and distribution reinforcements 43. The main reinforcements 42 are round bar-shaped reinforcing bars that extend in the longitudinal direction of each of the frames 11 to 13. The distribution reinforcements 43 are arranged in a direction perpendicular to the longitudinal direction of the main reinforcements 42 and are wound around the multiple main reinforcements 42. The distribution reinforcements 43 are arranged at multiple intervals in the longitudinal direction of the main reinforcements 42. Furthermore, reinforcing bars that reinforce the main reinforcements 42 may be provided. Furthermore, the driving-in anchor 33 of the anchor part 30 attached to the sash frame 10 is rotated approximately 90 degrees from the tilted state at the time of shipment to an upright state. At this time, if the driving-in anchor 33 interferes with the reinforcing bar 41, the driving-in anchor 33 is rotated to a position where it does not interfere with the reinforcing bar 41. Concrete 40 is poured into the formwork configured in this manner. At this time, concrete 40 is poured between the exterior sight pieces 113, 123, 133 and the interior sight pieces 114, 124, 134, excluding the spacers 15. The concrete 40 is then cured, and after it has hardened, the formwork is removed to produce the PC panel 2 with the sash 1 attached to the opening.

[0022] The PC board 2 manufactured in the factory is transported to a construction site of a building or other structure and installed as an exterior wall, after which finishing work is carried out on site to attach accessories and interior materials. 4 and 5 are diagrams showing the exterior wall portion made of PC boards 2 after finishing work. Grooves are formed on the outdoor side of the outdoor sight pieces 113, 133 of the upper frame 11 and the vertical frame 13, and these grooves are filled with backup material 51 and sealing material 52 to seal them. Backup material 51 and sealing material 52 are also filled into the groove defined by the connecting piece portion 1234, the fixing piece portion 1235 and the concrete 40 of the lower frame 12. Grooves are also formed on the indoor side of the indoor-side facing pieces 114, 124, 134 of the upper frame 11, lower frame 12, and vertical frame 13, and these grooves are also filled with backup material 51 and sealing material 52. These backup material 51 and sealing material 52 may be provided at the manufacturing factory for the PC board 2 or at the construction site.

[0023] Angle irons 61, 62, 63, which are accessories, are attached to the indoor side of the indoor-side sight pieces 114, 124, 134 of the upper frame 11, lower frame 12, and vertical frame 13 with drill screws 64. The angle irons 61, 62, 63 are formed in a roughly L-shape and include a fixing piece that is arranged along the indoor-side sight pieces 114, 124, 134 and a holding piece that is provided roughly perpendicular to the fixing piece. After the PC board 2 is installed at the construction site, the drill screws 64 are screwed into the fixing pieces of the angle irons 61, 62, 63 and the interior-side sight pieces 114, 124, 134 from the interior side to secure them in place. At this time, the tip of the drill screw 64 penetrates through the interior-side sight pieces 114, 124, 134 to the exterior side and is inserted into the spacer 15. In other words, the drill screws 64 are screwed into the parts of the spacer 15 where the concrete 40 has not been poured, and so can be screwed in without being obstructed by the concrete 40. Therefore, in this embodiment, the mounting pieces to which the accessory angle irons 61, 62, and 63 are attached are made up of the indoor-side sight pieces 114, 124, and 134. Therefore, the front surfaces of the mounting pieces are the indoor surfaces of the indoor-side sight pieces 114, 124, and 134, and the back surfaces of the mounting pieces to which the spacer 15 is attached are the outdoor surfaces of the indoor-side sight pieces 114, 124, and 134.

[0024] After the angle members 61, 62, and 63 are fixed with drill screws 64, a heat insulating material 70 is attached to the interior surface of the concrete 40. Thereafter, the frame material 72 is engaged with the angle members 61, 62, and 63. Furthermore, the interior material 74 is arranged along the outer periphery of the frame material 72. If the sash 1 is a fixed window, the glass 20 is fitted into the sash frame 10, a batten 14 is attached, and a backup material 21 and a sealing material 22 are filled in to complete the finish. As a result of the above, an exterior wall is constructed from the PC board 2 with the sash 1 attached to the opening, as shown in FIGS.

[0025] [Effects of the embodiment] According to this embodiment, the spacers 15 are attached to the exterior surfaces (back surfaces) of the interior sight pieces 114, 124, 134 of the sash 1, so that when the angle irons 61, 62, 63, which are accessory parts, are fixed with the drill screws 64, the tips of the drill screws 64 can be screwed into the spacers 15. Therefore, when concrete 40 is poured on the exterior surfaces of the interior sight pieces 114, 124, 134 to manufacture the PC board 2, the concrete 40 does not hinder the drill screws 64 from being screwed in, and there is no need to form pilot holes with a concrete drill, reducing the amount of work at the construction site. In addition, the spacers 15 are attached in advance when the sash 1 is assembled, and the work process for pouring the concrete 40 at the PC panel 2 manufacturing factory is the same as conventional, so a decrease in the manufacturing efficiency of the PC panel 2 can be prevented.

[0026] The spacers 15 are attached over almost the entire length of the upper frame 11, the lower frame 12 and the vertical frame 13 in the longitudinal direction, so that even if the screwing position of the drill screw 64 varies somewhat in the longitudinal direction, the drill screw 64 can be screwed in reliably, and the angle members 61, 62 and 63 which are accessory parts can be reliably fixed. Furthermore, since the cross-sectional dimensions of the spacer 15 are set according to the sight dimensions of the indoor sight pieces 114, 124, and 134, the drill screw 64 can be screwed in reliably even if the screwing position of the drill screw 64 varies slightly in the sight direction of each frame 11 to 13. The spacer 15 is made of AES, which is a non-combustible material, and therefore can improve the fire resistance of the PC board 2 to which the sash 1 is attached.

[0027] In the anchor parts 30 and 30A, the driving-in anchor 33 is attached to the connecting member 32 by the rivet 34 so as to be rotatable, so that interference between the reinforcing bar 41 and the driving-in anchor 33 can be easily avoided.

[0028] [Second embodiment] Next, a sash 1B and a PC board 2B to which the sash 1B is attached according to a second embodiment will be described with reference to FIGS. Sash 1B differs from sash 1 of the first embodiment in that a spacer 15B has been added to the back surface of the exterior side of sash frame 10; otherwise, the configuration is the same as sash 1, so the same symbols are used and explanations are omitted. That is, spacers 15B are attached to the back surfaces (indoor surfaces) of the outdoor sight pieces 113, 133 of the upper frame 11 and the vertical frame 13, and to the back surface (indoor surfaces) of the fixed piece portion 1235 of the outdoor sight piece 123 of the lower frame 12. Note that, since the vertical dimension of the fixed piece portion 1235 is shorter than that of the outdoor sight pieces 113, 133, the vertical dimension of the spacers 15B attached to the fixed piece portion 1235 is also shorter than that of the spacers 15B attached to the outdoor sight pieces 113, 133.

[0029] Such a sash 1B is shipped from the sash assembly factory to a PC board 2B manufacturing factory, where concrete 40B is poured around the sash 1B to produce a PC board 2B with the sash 1B fixed to the opening in the concrete 40B. This PC board 2B is transported to a construction site such as a building and installed as an exterior wall. At the construction site, brackets 85, which are accessories, are fixed from the outside of the room to the exterior facing pieces 113, 133 of the upper frame 11 and the vertical frame 13 with drill screws 64. Upper and vertical parting members 81 and 83, which are accessories, are press-fitted and fixed into each bracket 85. In addition, the accessory part, the water dripping material 82, is fixed from the outside of the room to the fixing piece portion 1235 of the outdoor side sight piece 123 of the bottom frame 12 with a drill screw 64. Therefore, the outdoor side sight pieces 113, 133 and the fixing piece portion 1235 are also mounting pieces to which accessories can be attached. Note that screw holes are formed in the top trim 81 and the vertical trim 83, and these screw holes are used to frame the top trim 81, the water flashing 82, and the vertical trim 83 all around. Therefore, by fixing the water flashing 82 with drill screws 64, the top trim 81 and the vertical trim 83 can be attached to the sash frame 10 without falling, even if the top trim 81 and the vertical trim 83 are not screwed to the bracket 85.

[0030] The concrete 40B of the PC board 2B has spaces formed therein in which the accessory parts, that is, an upper parting material 81, a water-repellent material 82, and a vertical parting material 83, are placed. The spaces between the upper parting material 81, the water-repellent material 82, the vertical parting material 83, and the concrete 40B are filled with backup material 51 and sealing material 52 to provide waterproofing. The spaces between the lower frame 12 and the water-repellent material 82 are also filled with backup material 51 and sealing material 52.

[0031] According to the second embodiment, the same effects as those of the first embodiment can be obtained. Furthermore, since the sash 1B is provided with the spacer 15B in addition to the spacer 15, when fixing accessories to the exterior side of the sash frame 10 with the drill screw 64, the tip of the drill screw 64 can be screwed into the spacer 15B, and the accessories such as the bracket 85 and the flashing material 82 can be attached reliably and easily without drilling holes in the concrete 40B. The spacer 15B is made of a non-combustible material like the spacer 15, and therefore can be used as a fire window without reducing the fireproof performance. The drill screws 64 for fixing the brackets 85 are covered with the upper trim material 81 and the vertical trim material 83, and the drill screws 64 for fixing the water drip material 82 are covered with the backup material 51 and the sealing material 52, so that the drill screws 64 are not exposed to the outside of the sash frame 10, improving the design and waterproofing properties.

[0032] [Third embodiment] Next, a sash 1C according to a third embodiment will be described with reference to FIG. The sash 1C is attached to an opening in a PC board 2C that is manufactured by pouring concrete 40C. The PC board 2C is fitted flush with the exterior surfaces of the sash 1C and the PC board 2C so that they are nearly flush with each other. Therefore, the cross-sectional shapes of the upper frame 11C and lower frame 12C of the sash 1C are different from those of the upper frame 11 and lower frame 12 of the sash 1, but the fact that a spacer 15 is attached to the back surface, i.e., the exterior surface, of the interior sight piece 114C of the upper frame 11C and the interior sight piece 124C of the lower frame 12C is common to each of the above-mentioned embodiments. An anchor part 30C is attached to the upper frame 11C and the lower frame 12C. The anchor part 30C has its expected dimensions set to match the cross-sectional shapes of the upper frame 11C and the lower frame 12C, but its basic structure is the same as that of the anchor part 30. Although not shown in the figure, anchor parts are also attached to the vertical frame, and spacers are attached to the back of the interior facing piece of the vertical frame.

[0033] As in the previous embodiment, angle irons 61, 62 are fixed to the interior surfaces of the upper frame 11C, lower frame 12C, and vertical frame with drill screws 64. In addition, backup material 51 and sealing material 52 are filled between the upper frame 11C, lower frame 12C, and vertical frame and the concrete 40C to provide waterproofing. According to the third embodiment, the same effects as those of the previous embodiments can be obtained.

[0034] [Variations] In the above embodiment, the spacers 15, 15B are made of a non-combustible material, but they may be made of a material other than a non-combustible material as long as the material allows screws to be inserted and ensures that spaces that will not be filled with concrete can be secured when manufacturing the PC boards 2, 2B, 2C. Furthermore, the spacers 15, 15B are not limited to elongated members arranged over the entire longitudinal length of each of the frames 11-12, but may be made of piece-like members and arranged in accordance with the positions of the drill screws 64.

[0035] The accessory parts are not limited to flashing materials, trimming materials, and angle bars, but may be any parts that can be screwed to the sash frame 10 attached to the PC board. The mounting pieces for attaching the accessories are not limited to the interior and exterior facing pieces of the sash frame, but may also be facing pieces, etc., as long as the accessories are screwed to the front side and concrete is filled in on the back side of the mounting piece. The sashes 1, 1B, and 1C in the above-described embodiments are for fixed windows, but they may be sashes for various window types with movable shoji screens, such as vertical sliding windows and double sliding windows. The sashes may also be sashes for stepped windows or continuous windows.

[0036] In anchor components 30, 30A, and 30C, the driving-in anchors 33 are connected to the connecting members 32 with rivets 34, but they may also be connected with bolts or screws as long as the driving-in anchors 33 can be rotated relative to the connecting members 32 to avoid interference with the reinforcing bars 41. Alternatively, the connecting members 32 may be connected to the bent pieces 312 with rivets, bolts, screws, etc., so that the connecting members 32 are rotatably connected about rotation axes along the longitudinal direction of each of the frames 11 to 13. In this case, the connecting members 32 and the driving-in anchors 33 can be rotated in two directions perpendicular to each other, making it easier to avoid interference with the reinforcing bars 41.

[0037] [Summary of the invention] The present invention is a sash having a sash frame that is attached to an opening in a precast concrete slab, characterized in that the sash frame has an attachment piece to which a separate accessory part can be attached on the front side with a screw, and a spacer into which the screw can be inserted is attached to the back side of the attachment piece. According to the sash of the present invention, a spacer is attached to the back surface of the mounting piece of the sash frame, so even if concrete is poured on the back surface of the mounting piece and the sash frame is attached to an opening in a precast concrete panel, screws for attaching accessories can be screwed into the spacer. This means that the concrete does not hinder the screw driving and there is no need to drill holes in the concrete, making it easy to attach accessories and improving workability at the construction site.

[0038] In the sash of the present invention, the spacer is preferably made of a non-flammable material. If the spacer is made of a non-combustible material, the fire resistance of the sash and the precast concrete panel to which the sash is attached can be improved.

[0039] In the sash of the present invention, the accessory is preferably a water flashing material, a trim material, or an angle material. The accessory parts, such as flashing material, trim material or angle material, can be easily attached to the sash frame with screws at the construction site, eliminating the need to attach these accessory parts in advance at the PC board manufacturing factory and preventing damage to the accessory parts during transport of the PC board.

[0040] In the sash of the present invention, it is preferable that the sash frame has an interior spotting piece and an exterior spotting piece, and the mounting piece is at least one of the interior spotting piece and the exterior spotting piece. In a sash frame, accessory parts can be easily attached with screws to the interior side and exterior side pieces exposed from the precast concrete plate. [Explanation of symbols]

[0041] 1...sash, 1B...sash, 1C...sash, 2...PC board, 2B...PC board, 2C...PC board, 10...sash frame, 11...upper frame, 11C...upper frame, 12...lower frame, 12C...lower frame, 13...vertical frame, 14...batten, 15...spacer, 15B...spacer, 20...glass, 30...anchor parts, 30A...anchor parts, 30C...anchor parts, 31...anchor, 31A...anchor, 32...connecting material, 33...anchor for driving in, 34...rivet, 40...concrete, 40B...concrete , 40C...concrete, 41...reinforcing bar, 51...backup material, 52...sealing material, 61...angle iron, 62...angle iron, 63...angle iron, 64...drill screw, 81...top trim, 82...water flashing material, 83...vertical trim, 85...bracket, 113...outdoor spot piece, 114...indoor spot piece, 114C...indoor spot piece, 123...outdoor spot piece, 124...indoor spot piece, 124C...indoor spot piece, 133...outdoor spot piece, 134...indoor spot piece.

Claims

1. A sash having a sash frame attached to an opening in a precast concrete slab, The sash frame has an attachment piece to which a separate accessory part is attached on the front side with a screw, and a spacer made of a non-flammable material into which the screw can be inserted is attached on the back side of the attachment piece. A sash characterized by the above.

2. 2. The sash according to claim 1, The accessory is a flashing material, a trim material, or an angle material. A sash characterized by the above.

3. 2. The sash according to claim 1, The sash frame includes an interior side facing piece and an exterior side facing piece, The mounting piece is at least one of the indoor spot piece and the outdoor spot piece. A sash characterized by the above.

Images