Interior window

Abstract

To provide an interior window with improved strength at the fixing point between the vertical frame and the frame member, where the load of the shoji screen is applied via the hinges. [Solution] An inner window is provided on the interior side of an outer window installed in an opening in the building structure, and has a resin frame member on the interior side of the outer window, and is attached to the inner circumference side of the frame member on the interior side of the outer window, comprising a frame body composed of an upper frame, a lower frame and a pair of vertical frames, a sliding screen that is attached to one of the pair of vertical frames so as to be openable and closable via a hinge, and a metal reinforcing plate placed between one of the vertical frames and the frame member, wherein the reinforcing plate is fixed to the building structure on the exterior side of one of the vertical frames, and one of the vertical frames is fixed to the frame member by a fixing member that penetrates the reinforcing plate.

Description

[Technical Field]

[0001] This disclosure relates to an inner window. [Background Art]

[0002] Conventionally, it has been known to attach an inner window consisting of a sliding window to the indoor side of an outer window provided in an opening of a bathroom (see, for example, Patent Document 1). [Prior Art Documents] [Patent Documents]

[0003] [Patent Document 1] Japanese Unexamined Patent Application Publication No. 2020 - 105900 [Summary of the Invention] [Problems to be Solved by the Invention]

[0004] In an opening where an outer window is attached, there is a structure in which a resin frame member is provided on the indoor side of the outer window. The inventor has found new problems when attaching a hinged window as an inner window inside the resin frame member. That is, since the shoji that constitutes the hinged window is attached to the vertical frame of the inner window via a hinge so as to be openable and closable, the load of the shoji concentrates on the fixing part between the vertical frame and the frame member via the hinge. Since the resin frame member is inferior in strength compared to a wooden frame member, it is necessary to enhance the strength of the fixing part between the vertical frame and the frame member.

[0005] An object of this disclosure is to provide an inner window that improves the strength of the fixing part between the vertical frame and the frame member to which the load of the shoji is applied via a hinge. [Means for Solving the Problems]

[0006] This disclosure relates to an interior window having a resin frame member on the interior side of an exterior window provided in an opening in the building structure, and being attached to the inner circumference side of the frame member on the interior side of the exterior window, comprising a frame body composed of an upper frame, a lower frame and a pair of vertical frames, a sliding screen attached to one of the pair of vertical frames via a hinge so as to be openable and closable, and a metal reinforcing plate disposed between the one vertical frame and the frame member, wherein the reinforcing plate is fixed to the building structure on the exterior side of the one vertical frame, and the one vertical frame is fixed to the frame member by a fixing member that penetrates the reinforcing plate. [Brief explanation of the drawing]

[0007] [Figure 1] This is a view of the interior window according to this embodiment, seen from the inside. [Figure 2] This is a vertical cross-sectional view of the interior window along line AA in Figure 1. [Figure 3] This is a cross-sectional view of the interior window along line BB in Figure 1. [Figure 4] This is a view of the window frame and door stopper of the interior window according to this embodiment, as seen from the outside. [Figure 5] This is a view of the window frame and door stopper of the interior window according to this embodiment, as seen from the interior side. [Figure 6] This is a perspective view showing the frame and door stopper of the inner window according to this embodiment, disassembled. [Figure 7] This is an enlarged view of section C in Figure 3. [Figure 8] This is a front view showing the reinforcing plate for the inner window according to this embodiment. [Figure 9] Figure 8 shows the indoor end of the reinforcing plate as viewed from direction D. [Modes for carrying out the invention]

[0008] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. As shown in Figures 1 to 3, the interior window 1 of this embodiment is an interior bathroom window and is installed on the interior side of an exterior window 400, which is provided in a bathroom opening 101 formed in the building structure 100, at a predetermined distance from the exterior window 400.

[0009] Here, we define the directions shown in each figure. In each figure, X1 indicates the exterior side and X2 indicates the interior side. In the interior window 1, the direction toward the inside of the rectangular frame 2 is defined as the interior, and the direction toward the outside of the rectangular frame 2 is defined as the exterior. In the rectangular frame 2, the surface facing inward is called the inner circumferential surface, and the surface facing outward is called the outer circumferential surface.

[0010] As shown in Figures 2 and 3, the opening 101 is formed by assembling the upper corner members 100a, lower corner members 100b, and left and right vertical corner members 100c, 100d that constitute the building frame 100 into a rectangle. The exterior window 400 is attached to the upper corner members 100a, lower corner members 100b, and left and right vertical corner members 100c, 100d, and is positioned at the outermost X1 of the opening 101. The specific configuration of the exterior window is not particularly limited. In this embodiment, the exterior window 400 is an awning window in which a plurality of narrow glass plates 420 extending horizontally are arranged vertically inside a frame body 410 which is framed rectangularly with an upper frame 411, a lower frame 412, and left and right vertical frames 413, 414. Each glass plate 420 rotates toward the outside X1 by operating an operator handle 430 provided on the indoor side X2 of the vertical frame 414, opening the inside of the frame body 410. A screen door 440 is provided on the interior side X2 of the frame 410.

[0011] A resin frame member 6 is provided on the interior side X2 of the outer window 400 at the opening 101. The frame member 6 is formed into a rectangular cylindrical shape to conform to the opening shape of the opening 101, with a hollow plate-shaped upper frame member 61, a lower frame member 62, and left and right vertical frame members 63, 54, and extends from the outer window 400 toward the interior side X2. The frame member 6 is fixed to the bathroom wall panel 110 by screws 60 at the end on the interior side X2. A resin cover member 55 is attached around the four sides of the end on the interior side X2 of the frame member 6 so as to conceal the screws 60.

[0012] As shown in Figures 2 and 3, the bathroom wall panel 110 is positioned at a predetermined distance X2 on the interior side from the upper corner member 100a, lower corner member 100b and left and right vertical corner members 100c and 100d that constitute the building frame 100. Therefore, on the outer periphery of the frame member 6, a gap 120 is formed around all four sides between the upper corner member 100a, lower corner member 100b and left and right vertical corner members 100c and 100d and the bathroom wall panel 110.

[0013] The inner window 1 is attached to the inner circumference of the frame member 6 on the interior side X2 of the outer window 400. A gap 120 is provided on the outer circumference of the frame member 6 where the inner window 1 is attached. The inner window 1 is an opening window that has a door stop member 3 on the inner surface of the frame body 2, and houses a sash 4 inside the frame body 2 that opens toward the interior side X2 and closes so as to abut the door stop member 3 from the interior side X2.

[0014] As shown in Figures 1 to 5, the frame 2 is constructed by framing an upper frame 2a, a lower frame 2b, and a pair of left and right vertical frames 2c and 2d in a rectangular shape around its perimeter. The upper frame 2a, lower frame 2b, and vertical frames 2c and 2d are made of extruded profiles formed by extrusion molding from metal or resin material. The upper frame 2a, lower frame 2b, and vertical frames 2c and 2d have the same configuration except that their positions on the frame 2 differ vertically and horizontally, and that the lengths of the upper frame 2a and lower frame 2b and the left and right vertical frames 2c and 2d differ.

[0015] Figure 6 commonly shows the structures of the upper frame 2a, the lower frame 2b, and the vertical frames 2c and 2d. The upper frame 2a, the lower frame 2b, and the vertical frames 2c and 2d have an outdoor wall portion 21 facing the outdoor side X1, an indoor wall portion 22 facing the indoor side X2, an outer peripheral wall portion 23 facing the outside of the frame body 2, and an inner peripheral wall portion 24 facing the inside of the frame body 2, and are formed in a rectangular cross-section having a hollow portion 25 inside.

[0016] On the outer peripheral surfaces 230 of the upper frame 2a, the lower frame 2b, and the vertical frames 2c and 2d, a plurality of protrusion portions 231 are provided. The plurality of protrusion portions 231 are provided so as to protrude outward from the outer peripheral wall portion 23. The plurality of protrusion portions 231 extend over the entire length in the length direction of the upper frame 2a, the lower frame 2b, and the vertical frames 2c and 2d, and are arranged parallel to each other in the indoor-outdoor direction. At the end of the inner side X2 of the outer peripheral wall portion 23, a fin member 232 made of resin or rubber is provided.

[0017] On the inner peripheral surfaces 240 of the upper frame 2a, the lower frame 2b, and the vertical frames 2c and 2d, a pair of protruding pieces 241 and 242 are integrally formed. The protruding pieces 241 and 242 are provided so as to protrude toward the inside of the frame body 2 on the outdoor side X1 rather than the central portion in the indoor-outdoor direction of the inner peripheral wall portion 24. The protruding pieces 241 and 242 extend along the length direction of the upper frame 2a, the lower frame 2b, and the vertical frames 2c and 2d, and are arranged parallel to each other at a predetermined interval in the indoor-outdoor direction. One of the protruding pieces 241 is arranged on the outdoor side X1, and the other protruding piece 242 is arranged on the indoor side X2. One of the protruding pieces 241 is lower in height than the other protruding piece 242. At the tip of the protruding piece 24i, a locking claw portion 241a having a shape bent toward the outdoor side X1 is formed. On both surfaces of the protruding piece 242 on the outdoor side X1 and the indoor side X2, a plurality of locking protrusions 242a are respectively formed.

[0018] On the inner peripheral wall portion 24, a screw insertion hole 243 is formed between a pair of protruding pieces 241 and 242. On the outer peripheral wall portion 23, a screw hole 233 is formed corresponding to the screw insertion hole 243. The screw insertion hole 243 is a hole through which a fixing member described later for fixing the frame body 2 to the frame member 6 is inserted. The screw hole 233 is a hole into which the shaft portion of the fixing member inserted through the screw insertion hole 243 is inserted and the head seats. A plurality of screw insertion holes 243 and screw holes 233 are provided at a predetermined interval in the length direction of the upper frame 2a, the lower frame 2b, and the vertical frames 2c and 2d.

[0019] The frame body 2 has a vertical-lap structure in which the upper frame 2a is arranged between the upper end portions of the vertical frames 2c and 2d, and the lower frame 2b is arranged between the lower end portions of the vertical frames 2c and 2d. Therefore, the pair of protruding pieces 241 and 242 of the upper frame 2a and the lower frame 2b are provided over the entire length in the length direction of the upper frame 2a and the lower frame 2b, while the pair of protruding pieces 241 and 242 of the vertical frames 2c and 2d are cut out over the contact portion with the upper frame 2a and the lower frame 2b.

[0020] The doorstop member 3 is made of an extruded profile extruded from a metal material or a resin material, similar to the frame body 2, and is attached to the inner peripheral surface 240 of the frame body 2. Specifically, the doorstop member 3 is individually attached to the respective inner peripheral wall portions 24 along the length direction of the upper frame 2a, the lower frame 2b, and the vertical frames 2c and 2d. As shown in FIG. 6, the doorstop member 3 has an inner peripheral wall portion 31 facing the inside of the frame body 2, an outdoor wall portion 32 extending from the end of the inner peripheral wall portion 31 on the outdoor side X1 toward the inner peripheral surface 240 of the frame body 2, and an indoor wall portion 33 extending from the end of the inner peripheral wall portion 31 on the indoor side X2 toward the inner peripheral surface 240 of the frame body 2. The outdoor wall portion 32 and the indoor wall portion 33 have the same height from the inner peripheral wall portion 31. The interval in the indoor-outdoor direction between the outdoor wall portion 32 and the indoor wall portion 33 is formed so as to sandwich the pair of protruding pieces 241 and 242 of the frame body 2 from the indoor-outdoor direction. In the doorstop member 3, the outdoor wall portion 32 and the indoor wall portion 33 constitute a pair of engaging pieces that engage with the pair of protruding pieces 241 and 242 of the frame body 2.

[0021] A vertical wall portion 311 is integrally formed at the outer-side X1 end of the inner circumferential wall portion 31, which is bent toward the inside of the frame 2. However, the door stop members 3 attached to the left and right vertical frames 2c and 2d do not have a vertical wall portion 311. As shown in Figure 7, a resin or rubber fin member 312 is provided at the inner-side X2 end of the inner circumferential wall portion 31, which abuts against the outer-side X1 surface of the frame 40 of the sliding door 4 when the sliding door 4 is closed.

[0022] At the tip of the exterior wall portion 32, a locking projection 321 is integrally formed that bends toward the interior side X2 and locks from the exterior side X1 to the locking claw portion 241a of the protruding piece 241 on the exterior side X1 of the upper frame 2a, lower frame 2b, and vertical frames 2c, 2d. On the exterior side X1 surface of the interior wall portion 33, an L-shaped clamping piece 331 is formed that sandwiches the protruding piece 242 on the interior side X2 of the upper frame 2a, lower frame 2b, and vertical frames 2c, 2d between itself and the interior wall portion 33. Furthermore, on the exterior side X1 surface of the interior wall portion 33, a plurality of locking projections 332 are formed that lock the plurality of locking projections 242a of the protruding piece 242 sandwiched between itself and the clamping piece 331.

[0023] The door stopper member 3 is attached from the inside of the frame 2 so as to sandwich the pair of protruding pieces 241, 242 of the lower frame 2b and the vertical frames 2c, 2d between the exterior wall portion 32 and the interior wall portion 33. The locking projection 321 of the exterior wall portion 32 of the door stopper member 3 is locked onto the locking claw portion 241a of the protruding pieces 241 of the upper frame 2a, lower frame 2b, and vertical frames 2c, 2d. The clamping piece 331 of the door stopper member 3 clamps the protruding pieces 242 of the upper frame 2a, lower frame 2b, and vertical frames 2c, 2d between itself and the interior wall portion 33. As a result, the door stopper member 3 is attached to the inner circumferential surface 240 of the frame 2 so as to cover the screw insertion holes 243 around all four sides. As shown in Figures 4 and 5, the door stop members 3 that extend around all four sides have a horizontally dominant structure in which the door stop members 3, 3 of the left and right vertical frames 2c, 2d are positioned between the door stop members 3, 3 of the upper frame 2a and the lower frame 2b.

[0024] As shown in Figures 1 to 3, the shoji screen 4 is constructed by housing glass G inside a frame body 40, which is formed by assembling an upper frame 40a, a lower frame 40b, and a pair of left and right vertical frames 40c, 40d in a rectangular shape. Two hinges 5, 5 are provided, one above the other, spanning the vertical frame 40c on the hanging side of the shoji screen 4 and the vertical frame 2c of the frame body 2. A metal reinforcing member 251 is provided in the hollow portion 25 of the vertical frame 2c. As shown in Figure 2, the wing plates 51 on the vertical frame 2c side of the hinges 5, 5 are attached to the inner circumferential wall portion 24 of the vertical frame 2c by screwing screws 50 that penetrate the inner circumferential wall portion 24 of the vertical frame 2c into the reinforcing member 251.

[0025] A cam latch handle 41 is attached to the interior side X2 of the vertical frame 40d on the leading edge side of the shoji screen 4. A cam latch receiver 42 that engages with the cam latch handle 41 is provided on the exterior wall portion 21 of the vertical frame 2d of the frame body 2. A metal reinforcing member 251 is also provided in the hollow portion 25 of the vertical frame 2d, similar to the vertical frame 2c. As shown in Figure 1, the cam latch receiver 42 is attached to the vertical frame 2d by screwing a screw 42a that penetrates the interior wall portion 22 of the vertical frame 2d into the reinforcing member 251. As shown in Figure 2, the shoji screen 4 is supported by a stay 43. The stay 43 is provided across the upper frame 4a and the upper frame member 61 of the shoji screen 4.

[0026] When the user operates the cam latch handle 41 toward the interior side X2, the sash 4, supported by the stay 43, rotates toward the interior side X2 around the hinge 5. This opens the inside of the frame 2. When the user operates the cam latch handle 41 toward the exterior side X1, the sash 4 rotates toward the exterior side X1 around the hinge 5 and comes into contact with the door stopper member 3 that runs around the inside of the frame 2 from the interior side X2. This closes the inside of the frame 2.

[0027] Next, the attachment structure of the frame 2 to the picture frame member 6 will be described. As shown in Figures 2, 3, and 7, the frame 2 of the inner window 1 is attached to the inner circumferential surface 6a of the picture frame member 6 by a plurality of fixing members 7. The fixing members 7 consist of a first fixing member 71 that is attached to the screw holes 233 of the outer peripheral wall portion 23 through the screw insertion holes 243 of the upper frame 2a, the lower frame 2b, and the left and right vertical frames 2c, 2d, and a second fixing member 72 that is driven into the inner circumferential wall portion 24 on the interior side X2 of the door stop members 3 in the left and right vertical frames 2c, 2d.

[0028] As shown in Figure 7, the first fixing member 71 and the second fixing member 72 are both configured with anchor plugs 712 and 722 on the outer circumference of threaded portions 711 and 721. The anchor plugs 712 and 722 penetrate the outer peripheral wall portions 23 of the upper frame 2a, lower frame 2b, and vertical frames 2c and 2d, and the upper frame member 61, lower frame member 62, and vertical frame members 63 and 54, and protrude into the gap portion 120. The anchor plugs 712 and 722 are configured such that the tip side positioned in the gap portion 120 gradually expands in diameter as the threaded portions 711 and 721 are screwed in. Therefore, as shown in Figures 2 and 3, even if a gap portion 120 is formed on the outside of the frame member 6, the frame body 2 can be firmly fixed to the frame member 6.

[0029] As shown in Figures 1-3 and Figure 7, two reinforcing plates 8,8 are interposed between the vertical frame 2c and the vertical frame member 63, which are located on the hinge side of the shoji screen 4. The reinforcing plates 8,8 are made of flat metal members and extend from between the vertical frame 2c and the vertical frame member 63, corresponding to the fixing points of the vertical frame 2c and the two upper and lower hinges 5,5, respectively, toward the exterior side X1 of the vertical frame 2c. Specifically, as shown in Figures 2 and 3, the position of the exterior side X1 end 8a of the reinforcing plate 8 extends toward the interior side X2 of the outer window 400 and to the interior side of the vertical corner member 100c. As shown in Figure 7, the position of the interior side X2 end 8b of the reinforcing plate 8 is the same as the position of the interior wall portion 22 of the vertical frame 2c, and does not protrude toward the interior side X2 of the vertical frame 2c.

[0030] As shown in Figures 2 and 8, a screw hole 81 is formed at the end 8a of the outdoor side X1 of the reinforcing plate 8, in the portion that overlaps with the vertical beam 100c. The reinforcing plate 8 is fixed to the vertical beam 100c by a screw 80 that is screwed into the vertical beam 100c through the screw hole 81 and through the vertical frame member 63. Two notched grooves 82, 82 are formed at the end 8b of the indoor side X2 of the reinforcing plate 8. The notched grooves 82, 82 extend in a long length in the indoor-outdoor direction and are open toward the indoor side X2 of the reinforcing plate 8.

[0031] As shown in Figure 2, the first fixing member 71 and the second fixing member 72, which fix the vertical frame 2c to the vertical frame member 63, are positioned to sandwich the wing plates 51, 51 on the vertical frame 2c side of the hinges 5, 5 from above and below, and are screwed into the vertical frame member 63 through the two upper and lower notched grooves 82, 82 of the reinforcing plate 8. Since the reinforcing plate 8 is fixed to the vertical corner member 100c of the building frame 100 at its outer end 8a of X1, it firmly supports the load of the sash 4 that is applied to the fixing point between the vertical frame 2c and the vertical frame member 63 via the hinges 5, 5. Because the strength of the fixing point between the vertical frame 2c and the vertical frame member 63, where the load of the sash 4 is applied via the hinges 5, 5 is improved, the inner window 1, which is an opening window, can be firmly fixed to the inner circumference of the frame member 6, even if the frame member 6 is made of resin.

[0032] As shown in Figures 8 and 9, multiple notched grooves 83 are formed at the end 8b of the reinforcing plate 8 on the interior side X2, by cutting out the reinforcing plate 8 in a V-shape in the thickness direction. The notched grooves 83 extend vertically along the extension direction of the vertical frame 2c, traversing the reinforcing plate 8 longitudinally. The multiple notched grooves 83 are arranged parallel to each other with spacing in the interior-exterior direction. The notched grooves 83 constitute the weak points in the reinforcing plate 8. Therefore, the installer of the interior window 1 can easily adjust the length of the reinforcing plate 8 in the interior-exterior direction to an appropriate length by cutting off the portion on the interior side X2 of one of the notched grooves 83, depending on the distance between the building frame 100 (vertical beam 100c) and the vertical frame 2c.

[0033] In the embodiments described above, the frame of the inner window 1 may be connected to the frame of the outer window 400. This strengthens the mounting strength of the frame of the inner window 1.

[0034] According to the inner window 1 of the above embodiment, the following effects are achieved. In other words, the exterior window 400 provided in the opening 101 of the building frame 100 has a resin frame member 6 on the interior side X2 of the exterior window 400, and the interior window 1 attached to the inner circumference side of the frame member 6 on the interior side X2 of the exterior window 400 comprises a frame body 2 composed of an upper frame 2a, a lower frame 2b and a pair of vertical frames 2c, 2d, a sash 4 attached to one of the pair of vertical frames 2c via a hinge 5 so as to be openable and closable, and a metal reinforcing plate 8 positioned between one of the vertical frames 2c and the frame member 6 (vertical frame member 63), wherein the reinforcing plate 8 is fixed to the building frame 100 (vertical square member 100c) on the exterior side X1 of one of the vertical frames 2c, and one of the vertical frames 2c is fixed to the frame member 6 (vertical frame member 63) by fixing members 7 (first fixing member 71, second fixing member 72) that penetrate the reinforcing plate 8. According to this, the load of the shoji screen 4 applied to the fixing point between the vertical frame 2c and the frame member 6 (vertical frame member 63) via the hinge 5 can be firmly supported by the reinforcing plate 8. Because the strength of the fixing point between the vertical frame 2c and the frame member 6 (vertical frame member 63) is improved, even if the frame member 6 is made of resin, the inner window 1, which is an opening window, can be firmly fixed to the inner circumference of the frame member 6.

[0035] In the above embodiment, the reinforcing plate 8 has a notched groove 82 that extends in a long length in the indoor-outdoor direction, and the fixing members 7 (first fixing member 71, second fixing member 72) pass through the notched groove 82. With this, the reinforcing plate 8 can allow the fixing members 7 to pass through the notched groove 82 even if there is variation in the position of the fixing members 7.

[0036] In the above embodiment, the reinforcing plate 8 has two notched grooves 82, 82 that sandwich the fixing portion between the vertical frame 2c and the hinge 5 from above and below. This makes it possible to more firmly support the fixing portion between the vertical frame 2c and the frame member 6 (vertical frame member 63) on which the load of the shoji screen 4 is applied via the hinge 5.

[0037] In the above embodiment, the reinforcing plate 8 has a plurality of notch grooves 83 at the end 8b on the interior side X2 that extend vertically and are arranged parallel to each other at intervals in the interior-exterior direction. With this, the length of the reinforcing plate 8 in the interior-exterior direction can be easily adjusted to an appropriate length by separating the portion on the interior side X2 from any of the notch grooves 83, depending on the distance between the building frame 100 (vertical beam 100c) and the vertical frame 2c.

[0038] In the above embodiment, the frame member 6 has a gap 120 on the outer circumference of the mounting portion of the frame body 2. With this, even if a gap 120 is provided on the outer circumference of the frame member 6, the reinforcing plate 8 can firmly support the fixing portion between the vertical frame 2c, on which the load of the shoji screen 4 is applied via the hinge 5, and the frame member 6 (vertical frame member 63).

[0039] In the above embodiment, the fixing members 7 (first fixing member 71, second fixing member 72) are configured to have anchor plugs 712, 722 on the outer circumference of the threaded portions 711, 721. With this configuration, even if a gap 120 is formed on the outer circumference side of the frame member 6, the frame body 2 can be firmly fixed to the frame member 6.

[0040] Although one embodiment of the present disclosure has been described above, the present disclosure is not limited to the embodiment described above and can be modified as appropriate. For example, the reinforcing plate 8 is not limited to being provided between the vertical frame 2c and the vertical frame member 63 in a manner corresponding to the number of hinges 5. The inner window 1 may be provided with one reinforcing plate 8 between the vertical frame 2c and the vertical frame member 63, having a size that extends to all fixing points between the multiple hinges 5 and the vertical frame 2c. The number of screw holes 81 formed in the reinforcing plate 8 is not limited to one, but may be multiple.

[0041] This disclosure includes interior windows as described in the following embodiments.

[0042] <Aspect 1> An outer window provided in an opening in the building structure has a resin frame member on the interior side, and an inner window is attached to the inner circumference side of the frame member on the interior side of the outer window, A frame consisting of an upper frame, a lower frame, and a pair of vertical frames, A sliding screen is attached to one of the pair of vertical frames via a hinge so as to be able to be opened and closed, The system comprises a metal reinforcing plate positioned between one of the vertical frames and the picture frame member, The reinforcing plate is fixed to the building structure on the exterior side of one of the vertical frames. The aforementioned vertical frame is fixed to the picture frame member by a fixing member that penetrates the reinforcing plate, forming an inner window.

[0043] <Aspect 2> The reinforcing plate has a notched groove that extends in a long length in the indoor-outdoor direction, The inner window according to embodiment 1, wherein the fixing member penetrates the notched groove.

[0044] <Aspect 3> The inner window according to embodiment 2, wherein the reinforcing plate has two notched grooves so as to sandwich the fixing portion between the one vertical frame and the hinge from above and below.

[0045] <Aspect 4> The reinforcing plate has a plurality of notch grooves at its interior end that extend vertically and are arranged parallel to each other at intervals in the interior-exterior direction, according to any one of embodiments 1 to 3.

[0046] <Aspect 5> An inner window according to any one of embodiments 1 to 4, wherein the frame member has a gap on the outer circumference side of the mounting portion of the frame body.

[0047] <Aspect 6> The inner window according to embodiment 5, wherein the fixing member is configured to have an anchor plug on the outer circumference of the threaded portion. [Explanation of Symbols]

[0048] 1 Inner window, 2 Frame, 2a Upper frame, 2b Lower frame, 2c, 2d Vertical frames, 4 Sash, 5 Hinges, 6 Frame members, 7 Fixing members, 71 First fixing member, 72 Second fixing member, 711, 721 Screw parts, 712, 722 Anchor plugs, 8 Reinforcement plate, 8b Indoor end, 82 Notched groove, 83 Notch groove, 100 Building frame, 101 Opening, 120 Gap, 400 Outer window

Claims

1. An outer window provided in an opening in the building structure has a resin frame member on the interior side, and an inner window is attached to the inner circumference side of the frame member on the interior side of the outer window, A frame consisting of an upper frame, a lower frame, and a pair of vertical frames, A sliding screen is attached to one of the pair of vertical frames via a hinge so as to be able to be opened and closed, The system comprises a metal reinforcing plate positioned between one of the vertical frames and the picture frame member, The reinforcing plate is fixed to the building structure on the exterior side of one of the vertical frames. The aforementioned vertical frame is fixed to the picture frame member by a fixing member that penetrates the reinforcing plate, forming an inner window.

2. The reinforcing plate has a notched groove that extends in a long length in the indoor-outdoor direction, The inner window according to claim 1, wherein the fixing member penetrates the notched groove.

3. The inner window according to claim 2, wherein the reinforcing plate has two notched grooves so as to sandwich the fixing portion between the one vertical frame and the hinge from above and below.

4. The reinforcing plate has a plurality of notch grooves at its interior end that extend vertically and are arranged parallel to each other at intervals in the interior-exterior direction, according to any one of claims 1 to 3.

5. The inner window according to any one of claims 1 to 3, wherein the frame member has a gap on the outer circumference side of the mounting portion of the frame body.

6. The inner window according to claim 5, wherein the fixing member is configured to have an anchor plug on the outer circumference of the threaded portion.

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