Doors and fittings

Abstract

To provide a fitting that offers improved thermal insulation and wind pressure resistance capabilities.SOLUTION: A fitting includes a window frame and a sliding sash that is provided in the window frame in an opening / closing manner. The window frame has a metal lower frame 21 that is made of metal and a resin lower frame 25 that is made of resin. The sliding sash has a metal bottom stile 51 that is made of metal and a resin bottom stile 55 that is made of resin. The metal frame has a support surface facing the interior surface of the metal stile. The resin frame has an opposing surface that faces the interior surface of the resin stile. A distance dimension L1 between the interior surface of the metal stile and the support surface in the depth direction is smaller than a distance dimension L2 between the interior surface of the resin stile and the opposing surface in the depth direction.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a fitting.

Background Art

[0002] Conventionally, a composite fitting including a window frame having a metal frame and a resin frame, and a shoji having a metal sash and a resin sash has been known (see, for example, Patent Document 1). The composite fitting of Patent Document 1 is composed of a window frame in which a resin frame is attached to the inner peripheral side of a metal frame, and a shoji in which a resin sash is attached to the indoor side of a metal sash. Thereby, since the metal frame and the metal sash are covered with the resin frame and the resin sash, the heat insulation performance of the composite fitting can be improved.

Prior Art Documents

Patent Documents

[0003] [[ID=上記の特許文献1に記載の技術に関する特許文献2]]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, the composite fitting can be used as a fitting for a house, but it may not be used for products for buildings because higher wind pressure resistance performance is required. That is, when wind pressure (positive pressure) from the outside is applied to the shoji, the resin sash of the shoji abuts on the resin frame from the outdoor side and a high pressure is applied, so there is a risk that the resin frame and the resin sash may come off from the metal frame and the metal sash. Therefore, in a composite fitting capable of improving heat insulation performance, it is required to improve wind pressure resistance performance so that it can be installed in buildings and the like. In addition, when installing the composite fitting in a building, it is also required to improve fire resistance performance.

[0005] An object of the present invention is to provide a fitting capable of improving heat insulation performance and wind pressure resistance performance. Another object of the present invention is to provide a fitting capable of improving heat insulation performance, wind pressure resistance performance, and fire resistance performance. [Means for solving the problem]

[0006] The present invention relates to a joinery comprising a window frame and a shoji screen that is attached to the window frame so as to be openable and closable, wherein the window frame comprises a metal frame and a resin frame, the shoji screen comprises a metal frame and a resin frame, the metal frame has a support surface facing the interior surface of the metal frame, the resin frame has a facing surface facing the interior surface of the resin frame, and the distance dimension in the depth direction between the interior surface of the metal frame and the support surface is smaller than the distance dimension in the depth direction between the interior surface of the resin frame and the facing surface. Furthermore, in the aforementioned joinery, it is preferable that a first sealing material is attached to one of the metal frame or the metal frame, which abuts against the other, and a second sealing material is provided on one of the resin frame or the resin frame, which abuts against the other, or that one of the resin frame or the resin frame has a cover portion that covers the inner circumference of the first sealing material, and at least one of the metal frame or the metal frame is located on the inner circumference side of the first sealing material and has a heat-foamed material mounting surface facing the other of the metal frame or the metal frame, and that a heat-foamed material is attached to the heat-foamed material mounting surface. [Effects of the Invention]

[0007] According to the joinery of the present invention, the window frame is equipped with a resin frame in addition to a metal frame, and the shoji screen is equipped with a resin frame in addition to a metal frame, thereby improving thermal insulation performance. Furthermore, since the distance between the interior surface of the metal frame and the support surface is smaller than the distance between the interior surface of the resin frame and the opposing surface, when positive pressure is applied to the shoji screen by wind from the outside, the metal frame comes into contact with the support surface of the metal frame, while the resin frame does not come into contact with the resin frame. This prevents the resin frame or resin frame from coming off the metal frame or metal frame, thereby improving wind pressure resistance performance. Furthermore, if a first sealing material is provided on one of the metal frame or metal stile, and a heat-expandable foam material mounting surface is provided on at least one of the metal frame or metal stile, located on the inner circumference of the first sealing material, and the heat-expandable foam material is attached to it, then even if the metal frame or metal stile becomes hot during a fire and the first sealing material ignites, the flames can be blocked by the heat-expandable foam material, preventing the fire from spreading to the interior and improving fire resistance. In addition, if a heat-expandable foam material mounting surface is provided on the metal frame or metal stile, there is no need to prepare a separate attachment for positioning the heat-expandable foam material, which can reduce costs and improve the aesthetics. [Brief explanation of the drawing]

[0008] [Figure 1] This is a longitudinal cross-sectional view showing a building component according to the first embodiment of the present invention. [Figure 2] This is a cross-sectional view showing the joinery of the above embodiment. [Figure 3] This is a longitudinal cross-sectional view showing the lower frame and lower stile of the above embodiment. [Figure 4] This is a perspective view showing the joint between the lower frame and the vertical frame of the above embodiment. [Figure 5] This is a perspective view showing the joint between the lower frame and the vertical frame of the above embodiment. [Figure 6] This is a perspective view showing the joint between the lower frame and the vertical frame of the above embodiment. [Figure 7] This is a vertical cross-sectional view showing the lower frame and lower rail of a door or window according to a second embodiment of the present invention. [Modes for carrying out the invention]

[0009] [First Embodiment] Hereinafter, a building component according to the first embodiment of the present invention will be described with reference to the drawings. Figure 1 is a vertical cross-sectional view of a vertical sliding window 1, which is a building component of the first embodiment, and Figure 2 is a horizontal cross-sectional view of the vertical sliding window 1. The vertical sliding window 1 is installed in an opening of a building such as a building, and comprises a window frame 2, a sash 3 placed inside the window frame 2, and a connecting part 5 that connects the window frame 2 to the sash 3 so that it can be opened and closed in a vertical sliding manner.

[0010] Window frame 2 is constructed by framing an upper frame 10, a lower frame 20, and left and right vertical frames 30. The shoji screen 3 is composed of a frame body formed by framing an upper frame 40, a lower frame 50, and left and right vertical frames 60, and a surface material 4 such as a glass panel held by the frame body. In this embodiment, a double-glazed surface material 4 is used, but the surface material 4 may be a single pane of glass or three panes of glass.

[0011] As shown in Figures 1 and 2, the upper frame 10 is composed of a metal upper frame 11 and a resin upper frame 15, the lower frame 20 is composed of a metal lower frame 21 and a resin lower frame 25, and the vertical frame 30 is composed of a metal vertical frame 31 and a resin vertical frame 35. Furthermore, the upper frame 40 is composed of a metal upper frame 41 and a resin upper frame 45, the lower frame 50 is composed of a metal lower frame 51 and a resin lower frame 55, and the vertical frame 60 is composed of a metal vertical frame 61 and a resin vertical frame 65.

[0012] The upper metal frame 11, lower metal frame 21, and vertical metal frame 31 are each made of extruded aluminum profiles, and these upper metal frame 11, lower metal frame 21, and vertical metal frame 31 constitute the metal frame. Furthermore, the upper resin frame 15, lower resin frame 25, and vertical resin frame 35 are each made of extruded synthetic resin profiles, and these upper resin frame 15, lower resin frame 25, and vertical resin frame 35 constitute the resin frame. The metal upper frame 41, metal lower frame 51, and metal vertical frame 61 are each made of extruded aluminum profiles, and these metal upper frame 41, metal lower frame 51, and metal vertical frame 61 constitute the metal frame. Furthermore, the upper resin frame 45, the lower resin frame 55, and the vertical resin frame 65 are each made of extruded synthetic resin, and these upper resin frame 45, lower resin frame 55, and vertical resin frame 65 constitute the resin frame.

[0013] Next, the detailed structure of the window frame 2 and the sash 3 will be explained using the lower frame 20 and lower rail 50, which are shown in an enlarged view in Figure 3, as an example.

[0014] [Bottom frame] The metal lower frame 21 of the lower frame 20 includes a lower frame body 22, a door stop portion 23, and an engaging portion 24. The lower frame body 22 includes a prospective piece portion 221 extending along the prospective direction, an outdoor surface portion 222 extending downward (toward the outer peripheral side of the window frame 2) from the outdoor end portion of the prospective piece portion 221, an indoor surface portion 223 extending downward near the indoor end portion of the prospective piece portion 221, and a lower surface portion 224 connecting between the outdoor surface portion 222 and the indoor surface portion 223. Therefore, a hollow portion is formed in the lower frame body 22.

[0015] The door stop portion 23 is a portion disposed on the indoor side of the lower frame 50, and includes a finding piece 231 extending upward from the indoor end portion of the prospective piece portion 221, a pair of holding pieces 232 protruding outward from the middle position in the vertical direction of the finding piece 231, and a protrusion 233 protruding outward from the tip, that is, the upper end of the finding piece 231. Each holding piece 232 is formed in an L-shaped cross section, and a first tight material 70 is held on the holding piece 232. The first tight material 70 is composed of a base portion 71 made of a hard resin and a fin portion 72 made of a soft resin. The base portion 71 is attached to the holding piece 232. The fin portion 72 is continuously formed from the base portion 71 and abuts against the lower frame 50 as will be described later. In the finding piece 231, a heat-expandable material mounting surface 234 to which the heat-expandable material 80 is attached is provided between the holding piece 232 and the protrusion 233, that is, on the inner peripheral side (upper side) of the window frame 2 with respect to the holding piece 232. As a method of attaching the heat-expandable material 80 to the heat-expandable material mounting surface 234, adhesion or screwing may be used, or further, a holding groove for holding the heat-expandable material 80 may be formed in the metal lower frame 21 for attachment, and the attachment method of the heat-expandable material 80 is not particularly limited. The attachment methods of other heat-expandable materials described later are the same. Further, a protrusion 235 is formed on the indoor surface of the finding piece 231.

[0016] The engaging portion 24 is the part into which the resin lower frame 25 engages, and comprises an extended piece 241 extending inward from the visible piece 231, an L-shaped engaging piece 242 extending upward from the indoor end of the extended piece 241, and a projection 243 extending upward from the outdoor side of the engaging piece 242 on the extended piece 241. Furthermore, a second extension piece 244 is formed on the outer circumference (lower side) of the extension piece 241, extending inward from the facing piece 231. At the indoor end of each extension piece 241, 244, an indoor facing piece 245 is provided, connecting these ends and extending further downward. Therefore, the hollow portion 246 is partitioned by the facing piece 231, the extending pieces 241 and 244, and the interior facing piece 245.

[0017] The resin lower frame 25 improves thermal insulation performance by covering the upper surface of the extension piece 241 and the indoor exposed surface of the facing piece 231 so that the metal lower frame 21 is not exposed to the indoor space. The resin lower frame 25 comprises a projection piece 251 extending in the depth direction, an engaging piece 253 extending outward from the projection piece 251 and engaging with the projection 233, a first locking piece 254 extending downward from the outdoor end of the projection piece 251 and locking with the projection 235, a second locking piece 255 extending downward from an intermediate position in the depth direction of the projection piece 251 and being inserted and locked between the engaging piece 242 and the projection piece 243, and a second sealing material 256 extending outward from the engaging piece 253. The resin lower frame 25 is a two-color extruded product, formed from hard resin except for the second sealing material 256, which is made from soft resin.

[0018] [Lower stile] The metal lower frame 51 of the lower frame 50 comprises a lower frame body 52 and a contact portion 53. The lower frame body 52 is composed of a projection piece 521 extending along the projection direction, an exterior engaging piece 522 extending upward from the exterior end of the projection piece 521, and an interior retaining piece 523 extending upward from the interior end of the projection piece 521. The upper end of the interior retaining piece 523 has a projection that protrudes inward and a stepped portion. A screw hole is formed on the upper surface of the prospect piece 521, and a projection 524 is formed on the outdoor side of the screw hole.

[0019] A glazing strip 54 engages with the projection 524 of the projection piece 521 and the exterior engaging piece 522. A double-glazed glass panel 4 is held between the glazing strip 54 and the interior holding piece 523 via a backup material and a sealing material. The panel 4 is placed on a setting block 6 positioned on the upper surface of the projection piece 521.

[0020] The contact portion 53 is a part that protrudes inward from the lower frame body 52 and comprises an outer peripheral projection piece 531 and an inner peripheral projection piece 532 extending inward from the indoor retaining piece 523, and a contact piece 533 that connects the indoor ends of the outer peripheral projection piece 531 and the inner peripheral projection piece 532. The inner peripheral projection piece 532 is located on the inner side of the outer peripheral projection piece 531, that is, on the upper side in the lower frame 50. The hollow portion is then divided by these outer peripheral projection piece 531 and inner peripheral projection piece 532, the contact piece 533, and the indoor retaining piece 523. A screw hole is formed on the indoor side of the contact piece 533. In addition, an L-shaped engaging piece 535 is formed on the upper surface of the inner circumference projection piece 532.

[0021] In the vertical sliding window 1, the connecting component 5 for opening and closing the sash 3 is fixed to the outer peripheral projection piece 531 and to the projection piece portion 221 of the lower frame 20 that faces the outer peripheral projection piece 531.

[0022] The resin bottom frame 55 improves thermal insulation performance by covering the upper surface of the inner perimeter projection piece 532 and the indoor exposed surface of the indoor retaining piece 523 so that the metal bottom frame 51 is not exposed to the interior space. The resin bottom frame 55 comprises a projection piece portion 551 extending in the projection direction, a visible piece portion 552 extending downward from the indoor end of the projection piece portion 551, a first engaging piece 553 extending from the projection piece portion 551 and engaging with the indoor retaining piece 523, and a second engaging piece 554 extending from the projection piece portion 551 and engaging with the engaging piece 535. The exterior end of the projection piece 551 is positioned on the projection and step of the interior retaining piece 523, and the upper surface of the projection piece 551 and the upper end of the interior retaining piece 523 are configured to be continuous. The interior surface of the visible piece 552 is positioned in the same location in the depth direction as the interior surface of the contact piece 533 of the contact piece 53, and each interior surface is configured to be flush with the surface in the visibility direction. The contact piece 533 is positioned at a height opposite to the retaining piece 232, and the first tightening material 70 comes into contact with the contact piece 533. The second tightening material 256 comes into contact with the visible piece 552.

[0023] In the lower frame 50, heat-expanded foam material 85 is attached to the indoor side of the screw hole on the upper surface of the projection piece 521, the lower side of the outer projection piece 531 on the indoor surface of the indoor retaining piece 523, and the upper surface of the inner projection piece 532, respectively.

[0024] The upper frame 10 and vertical frame 30 of the window frame 2, and the upper stile 40 and vertical stile 60 of the shoji screen 3, have a similar configuration to the lower frame 20 and lower stile 50, and will be explained with reference to Figures 1 and 2.

[0025] [Top frame] The metal upper frame 11 of the upper frame 10 comprises an upper frame body 12, a door stopper 13, and an engaging part 14. The upper frame body 12 comprises a projection piece 121 extending along the projection direction, an exterior surface 122, a visible surface 123, and an interior surface 124 extending upward from the projection piece 121, an upper surface 125 connecting the exterior surface 122 and the visible surface 123, and a connecting piece 126 connecting the visible surface 123 and the interior surface 124. As a result, the upper frame body 12 has two hollow sections.

[0026] The door stopper portion 13 is located on the interior side of the upper frame 40 and comprises a facing piece 131 extending downward from the interior end of the projection piece 121, a pair of retaining pieces 132 protruding outward from an intermediate vertical position of the facing piece 131, and a projection 133 protruding outward from the tip, i.e., the lower end, of the facing piece 131. Each retaining piece 132 is formed in an L-shape in cross-section, and the first sealing material 70 is held by the retaining piece 132. In the visible piece 131, a heat-foaming material mounting surface 134 is provided between the retaining piece 132 and the projection 133, that is, on the inner circumference side (lower side) of the window frame 2 than the retaining piece 132, to which the heat-foaming material 80 is attached.

[0027] The engaging portion 14 is the part into which the resin upper frame 15 engages, and comprises an extended piece 141 extending inward from the joint between the indoor surface portion 124 and the connecting piece portion 126, an L-shaped engaging piece 142 extending downward from the indoor end of the extended piece 141, and a projection 143 extending downward from the outdoor side of the engaging piece 142 on the extended piece 141.

[0028] The resin upper frame 15, like the resin lower frame 25, improves thermal insulation performance by covering the visible piece 131, the interior surface portion 124, and the extension piece 141 so that the metal upper frame 11 is not exposed to the interior space. The resin upper frame 15 comprises a visible piece portion 151 extending in the depth direction, a visible piece portion 152 extending downward from the visible piece portion 151, an engaging piece portion 153 extending outward from the visible piece portion 152 and engaging with a projection 133, a first locking piece 154 extending upward from the exterior end of the visible piece portion 151 and locking with a projection formed on the interior surface portion 124, a second locking piece 155 extending upward from an intermediate position in the depth direction of the visible piece portion 151 and being inserted and locked between the engaging piece 142 and the projection piece 143, and a second sealing material 156 extending outward from the engaging piece portion 153. The visible piece 152 is positioned away from the visible piece 131, on the interior side. The resin upper frame 15 is a two-color extruded product, formed from hard resin except for the second sealing material 156, which is made from soft resin.

[0029] [Upper stile] The upper frame 40 has the same configuration as the lower frame 50, except that it has a retaining piece to which the third tightening material 73 is attached and the shape of the screw holes is different. The metal upper frame 41 of the upper frame 40 comprises an upper frame body 42 and a contact portion 43. The upper frame body 42 is composed of an extension piece 421 extending along the depth direction, an exterior engaging piece 422 extending downward from the exterior end of the extension piece 421, and an interior holding piece 423 extending downward from the interior end of the extension piece 421. A pair of retaining pieces are formed on the indoor end of the upper surface of the prospect piece 421, and the third sealing material 73 is held in place. A screw hole is formed on the lower surface of the prospect piece 421, and a projection is formed on the outdoor side of the screw hole.

[0030] A glazing strip 44 engages with the projection of the prospective piece 421 and the exterior engaging piece 422. The double-glazed glass panel 4 is held between the glazing strip 44 and the interior holding piece 423 via a backup material and a sealing material.

[0031] The contact portion 43 is a portion that protrudes inward from the upper frame body 42, and, similar to the contact portion 53, comprises an outer peripheral projection piece 431 and an inner peripheral projection piece 432 extending inward from the indoor holding piece 423, and a contact piece 433 that connects the indoor ends of the outer peripheral projection piece 431 and the inner peripheral projection piece 432. A screw hole is formed on the indoor side of the contact piece 433. In addition, an L-shaped engaging piece is formed on the lower surface of the inner circumference projection piece 432. In the vertical sliding window 1, the connecting component 5 for opening and closing the sash 3 is fixed to the outer peripheral projection piece 431 and the projection piece portion 121 facing the outer peripheral projection piece 431, respectively.

[0032] Since the resin upper frame 45 is a component with the same cross-sectional shape as the resin lower frame 55, its description is omitted. The interior surface of the resin upper frame 45 is positioned at the same location in the depth direction as the interior surface of the contact piece 433, and each interior surface is configured to be flush with the surface in the visibility direction. The contact portion 43 is positioned at a height opposite to the retaining piece 132, and the first sealing material 70 contacts the inner surface of the contact portion 433. The resin upper frame 45 is positioned at a height opposite to the engaging piece 153, and the second sealing material 156 contacts the inner surface of the resin upper frame 45.

[0033] [Vertical frame] The metal vertical frame 31 of the vertical frame 30 comprises a vertical frame body 32, a door stopper 33, and an engaging portion 34. The vertical frame body 32 comprises a projection piece 321 extending along the projection direction, an exterior surface piece 322 connected to the exterior end of the projection piece 321, and an L-shaped retaining piece 323 projecting from an intermediate position in the projection direction of the projection piece 321 toward the inner circumference of the window frame 2.

[0034] The door stopper portion 33 is located on the interior side of the vertical frame 60 and comprises a visible piece 331 extending from the visible piece portion 321 towards the inner circumference of the window frame 2, a pair of retaining pieces 332 protruding outward from an intermediate position in the left-right direction of the visible piece 331, and a projection 333 protruding outward from the tip of the visible piece 331, i.e., from the inner circumference of the window frame. Each retaining piece 332 is formed in an L-shape in cross-section and holds the first sealing material 70. In the visible piece 331, a heat-foaming material mounting surface 334 is provided between the retaining piece 332 and the projection 333, that is, on the inner circumference side of the window frame 2, relative to the retaining piece 332, to which the heat-foaming material 80 is attached.

[0035] The engaging portion 34 is the part into which the resin vertical frame 35 engages, and comprises an extended piece 341 extending inward from the joint between the projection piece 321 and the facing piece 331, an L-shaped engaging piece 342 extending inward from the indoor end of the extended piece 341 toward the inner circumference of the window frame, and a projection 343 extending inward from the outdoor side of the engaging piece 342 toward the inner circumference of the window frame on the extended piece 341.

[0036] The resin vertical frame 35, like the resin lower frame 25 and the resin upper frame 15, improves thermal insulation performance by covering the visible piece 331 and the extended piece 341 so that the metal vertical frame 31 is not exposed to the interior space. The resin vertical frame 35 comprises a visible piece portion 351 extending in the depth direction, a visible piece portion 352 extending from the visible piece portion 351 toward the inner circumference of the window frame 2, an engaging piece portion 353 extending outward from the tip of the visible piece portion 352 and engaging with a projection 333, a first locking piece 354 extending from the outer end of the visible piece portion 351 toward the outer circumference of the window frame 2 and locking onto a projection formed on the visible piece 331, a second locking piece 355 extending outward from an intermediate position in the depth direction of the visible piece portion 351 and being inserted and locked between the engaging piece 342 and the projection 343, and a second sealing material 356 extending outward from the engaging piece portion 353. The visible piece 352 is positioned away from the visible piece 331 towards the interior side and is positioned to be continuous in the vertical direction with the visible piece 152 of the resin upper frame 15. The resin vertical frame 35 is a two-color extruded product, formed from hard resin except for the second sealing material 356, which is made from soft resin.

[0037] [Vertical frame] The vertical frame 60 has a similar structure to the upper frame 40 and the lower frame 50. The metal vertical frame 61 of the vertical frame 60 comprises a vertical frame body 62 and a contact portion 63. The vertical frame body 62 is composed of a projection piece 621 extending along the projection direction, an exterior engaging piece 622 extending from the exterior end of the projection piece 621 toward the inner circumference where the facing material 4 is arranged, and an interior holding piece 623 extending from the interior end of the projection piece 621 toward the inner circumference. A pair of retaining pieces are formed on the outdoor end of the outer surface of the prospect piece 621 facing the vertical frame 30, and the third tightening material 73 is held in place. A glazing strip 64 is engaged with the prospective piece 621 and the exterior engaging piece 622. The double-glazed glass panel 4 is held between the glazing strip 64 and the interior holding piece 623 via a backup material and a sealing material.

[0038] The contact portion 63 is a part that protrudes inward from the vertical frame body 62, and, like the contact portions 43 and 53, comprises an outer peripheral projection piece 631 and an inner peripheral projection piece 632 that extend inward from the indoor holding piece 623, and a contact piece 633 that connects the indoor ends of the outer peripheral projection piece 631 and the inner peripheral projection piece 632. An L-shaped engaging piece is formed on the inner surface of the inner circumferential piece 632. An L-shaped engaging piece is also formed on the outer surface of the outer circumferential piece 631, and a projection is formed on the indoor retaining piece 623 that faces this engaging piece.

[0039] Since the resin vertical frame 65 is a component with the same cross-sectional shape as the resin lower frame 55, its description is omitted. The interior surface of the resin vertical frame 65 is positioned at the same location in the depth direction as the interior surface of the contact piece 633, and each interior surface is configured to be flush with the surface in the visibility direction. The contact portion 63 is positioned opposite the retaining piece 332, and the first sealing material 70 abuts against the inner surface of the contact portion 633. The resin vertical frame 65 is positioned opposite the engaging piece 353, and the second sealing material 356 abuts against the inner surface of the resin vertical frame 65.

[0040] The upper frame 10, lower frame 20, and left and right vertical frames 30 are framed together by screwing tapping screws from the vertical frames 30 into screw holes formed in the upper frame 10 and lower frame 20, thereby forming the window frame 2. The upper frame 40, lower frame 50, and left and right vertical frames 60 are framed by screwing tapping screws from the vertical frames 60 into screw holes formed in the upper frame 40 and lower frame 50, thereby forming the frame body of the shoji screen 3. Furthermore, a handle 90 is attached to the vertical frame 60 on the door-side of the left and right vertical frames 60. A receiving part 91, to which the handle 90 is locked, is fixed to the vertical frame 30 opposite to the door-side vertical frame 60. The handle 90 may be a cremone handle, a cam latch handle, or an operator handle.

[0041] [Distance between the shoji screen and the window frame in the depth direction] Next, regarding the distance dimension between the window frame 2 and the sash 3 in the depth direction in this embodiment, we will explain using the distance dimension between the lower frame 20 and the lower rail 50 shown in Figure 3 as an example. As shown in Figure 3, the distance in the depth direction between the metal bottom frame 21 and the metal bottom stile 51 of the window frame 2 and the sash 3 is defined as L1, and the distance in the depth direction between the resin bottom frame 25 and the resin bottom stile 55 is defined as L2. Specifically, the distance L1 is the distance in the depth direction between the interior surface of the contact portion 53 of the metal bottom stile 51, that is, the interior surface of the metal stile, and the exterior surface of the base portion 71 of the first sealing material 70 attached to the metal bottom frame 21, that is, the support surface in the metal frame that faces the interior surface of the metal stile. The spacing dimension L2 is the distance in the depth direction between the interior surface of the resin lower frame 55, that is, the interior surface of the resin frame, and the exterior surface of the engaging piece 253 of the resin lower frame 25, that is, the opposing surface in the resin frame that faces the interior surface of the resin frame. Between the upper frame 10 and vertical frame 30, and between the upper frame 40 and vertical frame 60, the distance dimension in the depth direction between the base portion 71 of the first sealing material 70 of the metal upper frame 11 and metal vertical frame 31 and the contact portions 43 and 63 of the metal upper frame 41 and metal vertical frame 61 is L1, and the distance dimension in the depth direction between the interior surface of the resin upper frame 45 and resin vertical frame 65 and the engaging pieces 153 and 353 of the resin upper frame 15 and resin vertical frame 35 is L2. Therefore, when the shoji screen 3 is pushed inward by positive pressure, even if the soft resin fin portion 72 of the first sealing material 70 and the second sealing materials 156, 256, and 356 deform and collapse, the contact portions 43, 53, and 63 of the metal frame will still contact the base portion 71 of the first sealing material 70. The base portion 71 is made of hard resin and is held in place by retaining pieces 132, 232, and 332, so the load due to positive pressure when the shoji screen 3 makes contact is supported by the door stop portions 13, 23, and 33 of the metal frame via the base portion 71 and the retaining pieces 132, 232, and 332. Furthermore, because the spacing dimension L2 is larger than the spacing dimension L1, when the contact portions 43, 53, and 63 of the metal frame come into contact with the base portion 71 of the first sealing material 70, the resin upper frame 45, resin lower frame 55, and resin vertical frame 65 do not come into contact with the resin upper frame 15, resin lower frame 25, and resin vertical frame 35, and no positive pressure force is applied to the resin upper frame 15, resin lower frame 25, and resin vertical frame 35.

[0042] [Watertight structure] Next, we will explain the watertight structure between the window frame 2 and the shoji screen 3. Between the upper frame 10, lower frame 20, and vertical frame 30 of the window frame 2 and the upper stile 40, lower stile 50, and vertical stile 60 of the shoji screen 3, a first tight seal material 70 and second tight seal materials 156, 256, and 356 are arranged. In other words, a tight line is formed on the outer circumference of the window frame 2 and the shoji screen 3 by the first tight seal material 70, and a tight line is formed on the inner circumference by the second tight seal materials 156, 256, and 356. As a result, a double tight line is formed on the inner and outer circumferences between the window frame 2 and the shoji screen 3, ensuring high watertightness. Furthermore, since the second sealing materials 156, 256, and 356 of the resin upper frame 15, resin lower frame 25, and resin vertical frame 35 are arranged on the inner side of the first sealing material 70 on the outer perimeter, the first sealing material 70 is not exposed to the interior side, thereby improving the aesthetic appearance. Furthermore, a third sealing material 73 is attached to the metal upper frame 41, which abuts against the projection portion 121 of the upper frame body 12, and a third sealing material 73 is attached to the metal vertical frame 61, which abuts against the exterior surface portion 322 of the vertical frame body 32, thereby further improving watertightness.

[0043] As shown in Figure 4, the visible piece 231 of the metal lower frame 21 and the visible piece 331 of the metal vertical frame 31 have notches 2311 formed at both the left and right ends of the visible piece 231, and the lower end of the visible piece 331 abuts against these notches 2311. Similarly, although not shown in the figure, notches are also formed at both the left and right ends of the visible piece 131 of the metal upper frame 11, and the upper end of the visible piece 331 abuts against these notches. Furthermore, as shown in Figure 5, notches 2511 are formed at both the left and right ends of the resin lower frame 25 so as not to interfere with the facing piece 331. These notches 2511 are formed away from the interior surface of the facing piece 331, and a gap is formed between the notches 2511 and the facing piece 331. Although not shown in the figure, both the left and right ends of the resin upper frame 15 are similarly notched. The contact points of the facing pieces 131, 231 and 331 are metal-to-metal contact points, and especially when a pressure difference occurs between the inside and outside due to wind pressure, rainwater may seep into the interior side of facing pieces 131, 231, and 331 through these metal-to-metal contact points. This rainwater that seeps in through the metal-to-metal contact points can be discharged through the following routes. On the interior side of the metal-to-metal contact portion between the notch of the flashing piece 131 and the flashing piece 331, the flashing piece portion 152 of the resin upper frame 15 is positioned with a space in between. Therefore, rainwater that seeps in through the metal-to-metal contact portion of the flashing pieces 131 and 331 falls into the space between the flashing piece 131 and the flashing piece portion 152, and then falls downward from the notch of the engaging piece portion 153. Below the engaging piece portion 153, as shown in Figure 6, the resin vertical frame 35 is positioned, and a space is formed between the flashing piece 331 and the flashing piece portion 352 that communicates vertically. As a result, the rainwater flows down through this space and then flows onto the extension piece 241 through the gap between the notch 2511 of the resin lower frame 25 and the flashing piece 331. Since the extension piece 241 has a visible piece 231 and a projection piece 243 formed on both the interior and exterior sides to create a groove-like structure, rainwater that has seeped onto the extension piece 241 can be prevented from further seeping into the interior. Rainwater that has seeped into this groove can be discharged, for example, by forming drainage holes at the end of the extension piece 241 and draining it into the hollow section 246 located below the extension piece 241, and then further discharged through discharge holes formed in the visible piece 231, which is the exterior surface of the hollow section 246.

[0044] [Fireproof structure] Next, we will explain the fire-resistant structure of the vertical sliding window 1. The window frame 2 and sash 3 of the vertical sliding window 1 are fitted with heat-expanded foaming materials 80 and 85 to ensure fire resistance. In other words, at the door stop portions 13, 23, and 33 of the upper frame 10, lower frame 20, and vertical frame 30, the heat-expandable foam material 80 is attached to the heat-expandable foam material mounting surfaces 134, 234, and 334 between the first sealing material 70 and the second sealing material 156, 256, and 356. This prevents the synthetic resin upper frame 15, lower frame 25, and vertical frame 35 from igniting when, for example, the upper frame body 12, lower frame body 22, and vertical frame body 32, which are made of aluminum extruded profiles, become hot due to an outdoor fire and the first sealing material 70 ignites. Furthermore, the heat-expandable material 80 is also attached to the outer circumference of the retaining piece 332 of the visible piece 331 of the vertical frame 30, and to the indoor end of the projection piece 321, that is, the connection part with the visible piece 331. In addition, the heat-expandable material 80 is also attached to the outdoor end of the projection piece 321 of the vertical frame 30 and to the indoor surface of the inner circumference end of the outdoor surface 322.

[0045] Furthermore, heat-expanding material 85 is also attached to the shoji screen 3. Specifically, as shown in Figure 1, in the upper frame 40, heat-expanding material 85 is attached to the upper and lower surfaces of the projection piece 421 and the lower surface of the inner circumference projection piece 432. Furthermore, in the lower frame 50, the heat-expanded foaming material 85 is attached to the upper surface of the projection piece 521, the interior surface of the interior holding piece 523 below the outer projection piece 531, and the upper surface of the inner projection piece 532. Furthermore, in each of the left and right vertical frames 60, the heat-expanded foaming material 85 is attached to the outer and inner surfaces of the projection piece 621 and to the inner surface of the inner projection piece 632. These heat-expanding materials 80 and 85 seal the gaps between the window frame 2 and the sash 3 in the event of a fire, and also seal the gap between the sash 3 and the facing material 4, thereby ensuring the fire-resistant performance of the vertical sliding window 1.

[0046] [Effects of the First Embodiment] In the vertical sliding window 1 of this embodiment, contact portions 43, 53, and 63 are formed on the metal upper frame 41, metal lower frame 51, and metal vertical frame 61 of the sash 3, and these contact portions 43, 53, and 63 are positioned opposite the base portion 71 of the first sealing material 70 which serves as the support surface of the metal frame, and the distance dimension L1 in the depth direction between the interior surface of the contact portions 43, 53, and 63 and the base portion 71 which serves as the support surface is set by the resin upper frame 45 and resin lower frame 5 5. By making the distance L2 in the depth direction between the interior surface of the resin vertical frame 65 and the opposing surfaces of the resin upper frame 15, resin lower frame 25, and resin vertical frame 35 smaller, when positive pressure is applied to the sash 3, the contact parts 43, 53, and 63 can contact the base part 71 and support the load, preventing the resin upper frame 45, resin lower frame 55, and resin vertical frame 65 from contacting the resin upper frame 15, resin lower frame 25, and resin vertical frame 35. Therefore, even if the sash 3 is subjected to wind pressure from outside, the load is supported by the metal frame, which consists of the metal upper frame 11, metal lower frame 21, and metal vertical frame 31, thus preventing the resin upper frame 45, resin lower frame 55, resin vertical frame 65, and the resin upper frame 15, resin lower frame 25, and resin vertical frame 35 from coming off. Consequently, the wind pressure resistance performance of the vertical sliding window 1 can be improved, and it can be installed in buildings, etc. Furthermore, since the support surface on the metal frame side is made up of the base portion 71 of the first tightening material 70, the impact when the metal contact portions 43, 53, and 63 collide with the base portion 71 can be absorbed, and damage to the contact portions 43, 53, and 63 can also be prevented.

[0047] Since the first sealing material 70 is attached to the metal frame, which consists of the upper metal frame 11, the lower metal frame 21, and the vertical metal frame 31, and the second sealing materials 156, 256, and 356 are provided to the resin upper frame 15, the lower resin frame 25, and the vertical resin frame 35, a double sealing line is formed on the inner and outer perimeter between the window frame 2 and the sash 3, thereby ensuring high watertightness. Furthermore, since the inner side of the first sealing material 70 on the outer perimeter is covered with the second sealing materials 156, 256, and 356, it is possible to prevent the first sealing material 70 from being exposed to the interior side, thereby improving the aesthetic appearance.

[0048] Since heat-expanding materials 80 and 85 are attached to the window frame 2 and the sash 3, fire resistance can be ensured. Furthermore, in the metal upper frame 11, metal lower frame 21, and metal vertical frame 31, mounting surfaces 134, 234, and 334 for the heat-expanding material are provided on the inner circumference side of the first sealing material 70, eliminating the need for attachments to mount the heat-expanding material 80. This reduces costs and improves aesthetic appeal. Furthermore, since the heat-expanding material 80 is placed between the first sealing material 70 and the second sealing materials 156, 256, and 356, even if the first sealing material 70 ignites, it is possible to prevent the second sealing materials 156, 256, and 356 from igniting. In other words, since the second sealing materials 156, 256, and 356 are insulated by the resin profiles, namely the resin upper frame 15, resin lower frame 25, and resin vertical frame 35, they will not ignite even if the metal upper frame 11, metal lower frame 21, and metal vertical frame 31 become hot in a fire. Therefore, even if the first sealing material 70 ignites, the heat-expanding material 80 will expand and block the flames, thus preventing the second sealing materials 156, 256, and 356 from igniting.

[0049] [Second Embodiment] Next, the joinery of the second embodiment will be described with reference to Figure 7. As shown in Figure 7, the joinery of the second embodiment differs from that of the first embodiment in the configuration of the resin lower frame 25B of the lower frame 20. The resin lower frame 25B has a cover portion 257 that extends in an L-shape in cross-section from the engaging piece portion 253, and does not have a second tightening material. Although not shown in the figures, the upper frame 10 and the vertical frame 30 may also be made using resin upper frames and resin vertical frames that have cover portions without a second tightening material.

[0050] The cover portion 257 of the resin lower frame 25B extends upward from the upper surface of the resin lower frame 55, and further, the outdoor edge of the cover portion 257 extends to a position outside the indoor surface of the resin lower frame 55, so that it can cover the gap between the lower frame 20 and the lower frame 50 in the depth direction. Furthermore, the distance L1 in the depth direction between the interior surface of the contact portion 53 and the base portion 71, i.e., the support surface, is smaller than the distance L2 in the depth direction between the interior surface of the resin lower frame 55 and the opposing surface of the cover portion 257 of the resin lower frame 25B.

[0051] According to the second embodiment of the joinery, since the spacing dimension L1 is smaller than L2, the wind pressure resistance performance can be improved in the same way as in the first embodiment. In addition, since the heat-expanded foam material 80 is attached to the heat-expanded foam material mounting surface 234, fire resistance can be ensured and attachments can be eliminated. Furthermore, since a cover portion 257 is provided instead of the second sealing material, the first sealing material 70 can be prevented from being exposed to the interior side, thereby improving the aesthetic appearance.

[0052] [Differentiation] The building components of the present invention are not limited to the vertical sliding window 1 of the above embodiment, but can also be used for various types of building components in which the sash opens and closes relative to the window frame, such as sliding windows, outward-opening windows, projecting windows, and outward-tilting windows. Furthermore, it can also be applied to casement windows installed in stepped windows and multi-pane windows. In the above embodiment, the first sealing material 70 was attached to the metal frame, but the first sealing material may also be attached to the metal frame, i.e., the upper metal frame 41, the lower metal frame 51, and the vertical metal frame 61. Similarly, the second sealing material may be provided on the resin upper frame 45, resin lower frame 55, and resin vertical frame 65. Furthermore, in the second embodiment, the cover portion 257 was formed on the resin upper frame 15, resin lower frame 25B, and resin vertical frame 35, but the cover portion may also be formed on the resin upper frame 45, resin lower frame 55, and resin vertical frame 65.

[0053] In the first embodiment, the support surface of the metal frame was formed by the base portion 71 of the first tight material 70. However, instead of the first tight material 70, a support piece integrated with the metal frame may be formed at a position opposite to the contact portions 43, 53, and 63 to serve as the support surface.

[0054] [Summary of the present invention] The present invention relates to a building component comprising a window frame and a sliding screen that is openably and closably attached to the window frame, wherein the window frame comprises a metal frame and a resin frame, the sliding screen comprises a metal frame and a resin frame, the metal frame has a support surface facing the interior surface of the metal frame, the resin frame has a facing surface facing the interior surface of the resin frame, and the distance dimension in the depth direction between the interior surface of the metal frame and the support surface is smaller than the distance dimension in the depth direction between the interior surface of the resin frame and the facing surface. According to the present invention, the window frame and shoji screen are constructed as a composite building component combining a metal frame, a metal frame, and a resin frame, a resin frame, thereby improving thermal insulation performance. Furthermore, since the distance between the interior surface of the metal frame and the support surface of the metal frame in the depth direction is made smaller than the distance between the interior surface of the resin frame and the opposing surface of the resin frame in the depth direction, when positive pressure is applied to the shoji screen, the interior surface of the metal frame comes into contact with the support surface of the metal frame, while the resin frame and resin frame do not come into contact. This prevents the resin frame and resin frame from coming off due to contact, thereby improving wind pressure resistance performance.

[0055] In the building fittings of the present invention, it is preferable that a first sealing material is attached to one of the metal frame or the metal frame to abut against the other, and a second sealing material is provided on one of the resin frame or the resin frame to abut against the other. According to the present invention, a double tight line can be formed with the first tight material and the second tight material, thereby ensuring high watertight performance.

[0056] In the building fittings of the present invention, it is preferable that a first sealing material is attached to one of the metal frame or the metal frame, which abuts against the other, and that one of the resin frame or the resin frame has a cover portion that covers the inner circumference of the first sealing material. According to the present invention, since a cover portion is provided to cover the inner circumference of the first sealing material, it is possible to prevent the first sealing material from being exposed to the interior side, thereby improving the aesthetic appearance.

[0057] In the joinery of the present invention, the first sealing material comprises a base portion made of a hard resin and a fin portion made of a soft resin, and when the first sealing material is attached to the metal frame, the support surface is preferably made of the base portion, and when the first sealing material is attached to the metal frame, the interior surface of the metal frame is preferably made of the base portion. According to the present invention, the support surface and interior surface can be formed with the hard resin base portion of the first sealing material, so that metal materials do not come into contact with each other when positive pressure is applied to the shoji screen, thereby reducing the impact at the time of contact and preventing damage to the metal materials.

[0058] In the joinery of the present invention, it is preferable that at least one of the metal frame or the metal frame is located on the inner circumference side of the first sealing material and has a heat-foamed material mounting surface facing the other of the metal frame or the metal frame, and that the heat-foamed material is attached to the heat-foamed material mounting surface. According to the present invention, since the heat-expanding material can be placed on the inner circumference side of the first sealing material, even if the metal frame or metal stile becomes hot during a fire and the first sealing material ignites, the flames can be blocked by the heat-expanding material, preventing the fire from spreading to the interior. Furthermore, since the metal frame or metal stile is provided with a mounting surface for the heat-expanding material, there is no need to prepare a separate attachment for placing the heat-expanding material, which reduces costs and improves the aesthetic appearance. [Explanation of Symbols]

[0059] 1... Vertical sliding window, 2... Window frame, 3... Sash, 10... Upper frame, 11... Metal upper frame, 12... Upper frame body, 13... Door stopper, 14... Engaging part, 15... Resin upper frame, 20... Lower frame, 21... Metal lower frame, 22... Lower frame body, 23... Door stopper, 24... Engaging part, 25... Resin lower frame, 25B... Resin lower frame, 30... Vertical frame, 31... Metal vertical frame, 32... Vertical frame body, 33... Door stopper, 34... Engaging part, 35... Resin vertical frame, 40... Upper frame, 41... Metal upper frame, 42... Upper frame body, 43... Contact part, 45... Resin upper Frame, 50...Bottom frame, 51...Metal bottom frame, 52...Bottom frame body, 53...Contact part, 55...Resin bottom frame, 60...Vertical frame, 61...Metal vertical frame, 62...Vertical frame body, 63...Contact part, 65...Resin vertical frame, 70...First sealing material, 71...Base part, 72...Fin part, 80...Heat-foamed material, 85...Heat-foamed material, 134...Heat-foamed material mounting surface, 156...Second sealing material, 234...Heat-foamed material mounting surface, 256...Second sealing material, 257...Cover part, 334...Heat-foamed material mounting surface, 356...Second sealing material.

Claims

1. A window fitting comprising a window frame and a shoji screen attached to the window frame so as to be openable and closable, The aforementioned window frame comprises a metal frame and a resin frame. The aforementioned shoji screen comprises a metal frame and a resin frame, The metal frame is provided with a support surface facing the interior surface of the metal frame, The resin frame has an opposing surface that faces the interior surface of the resin frame, The support surface is the surface that supports the load caused by the positive pressure when the interior surface of the metal frame comes into contact with the shoji screen. The interior surface of the metal frame and the interior surface of the resin frame are positioned at the same location in the depth direction, and each interior surface is configured to be flush with the surface in the width direction. The distance between the interior surface of the metal frame and the support surface in the depth direction is smaller than the distance between the interior surface of the resin frame and the opposing surface in the depth direction. A type of joinery characterized by its features.

2. In the joinery described in claim 1, A first sealing material that abuts against the metal frame is attached to the metal frame. The resin frame is provided with a second sealing material that contacts the resin frame. A type of joinery characterized by its features.

3. In the joinery described in claim 1, A first sealing material that abuts against the metal frame is attached to the metal frame. The resin frame has a cover portion that covers the inner circumference of the first sealing material. A type of joinery characterized by its features.

4. In the joinery according to claim 2 or claim 3, The first tightening material comprises a base made of hard resin and a fin made of soft resin. The support surface is formed by the base portion. A type of joinery characterized by its features.

5. In the joinery according to claim 2 or claim 3, The metal frame is located on the inner circumference side of the first sealing material and has a heat-foamed material mounting surface facing the metal frame, A heat-expanding material is attached to the aforementioned heat-expanding material mounting surface. A type of joinery characterized by its features.

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