Doors and fittings

Abstract

To provide a fitting that allows the exchange work of a resin cover on a lower frame to be easily carried out.SOLUTION: A fitting of the present invention includes a double sliding window 1 having a window frame 2 with an upper frame 10, a lower frame 20, and vertical frames. A resin vertical frame cover material 45 is detachably attached on the vertical frame. A resin lower frame indoor surface cover material 27 is detachably attached on an indoor side aspect surface of the lower frame 20. The lower frame indoor surface cover material 27 is placed at the outdoor side further than fixtures 74 placed on the inside of the lower frame 20. A lower end surface of the vertical frame cover material 45 is placed above the lower frame indoor surface cover material 27. The lower frame indoor surface cover material 27 is allowed to be detached from a state it is placed between the indoor side aspect surface and the fixtures 74 in a state where the vertical frame cover material 45 is detached from the vertical frame and to be attached on the indoor side aspect surface through inserting between the indoor side aspect surface and the fixtures.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a fitting including a frame and a shoji.

Background Art

[0002] Conventionally, as a sash window attached to an opening of a building, a sash window including a lower frame composed of a metal part made of aluminum and a resin part made of synthetic resin is known (for example, see Patent Document 1). An indoor rising piece is formed at an end on the indoor side of the resin part of the lower frame, and a mounting piece through which a wood screw can be inserted extends indoors at the lower end of the indoor rising piece. A floor material is disposed above the mounting piece.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, when a cover-shaped resin part attached to the lower frame is damaged or deteriorated, or when the color does not match the floor material or the like, it may be necessary to replace the resin part. In this case, since the resin part cannot be replaced without removing the floor material disposed on the mounting piece of the resin part, there is a problem that the workability during maintenance for replacing the resin part is reduced.

[0005] An object of the present invention is to provide a fitting capable of easily performing an operation of replacing a resin cover material provided on a lower frame.

Means for Solving the Problems

[0006] The joinery of the present invention is a joinery comprising a window frame having an upper frame, a lower frame, and left and right vertical frames, wherein a resin vertical frame cover material is detachably attached to the vertical frame, a resin lower frame cover material is detachably attached to the indoor-facing surface of the lower frame, the lower frame cover material is positioned on the outdoor side of the interior-facing material positioned on the indoor side of the lower frame, the lower end surface of the vertical frame cover material is positioned above the lower frame cover material, the lower frame cover material can be removed from the position between the indoor-facing surface and the interior-facing material when the vertical frame cover material is removed from the vertical frame, and can be inserted between the indoor-facing surface and the interior-facing material and attached to the indoor-facing surface. [Effects of the Invention]

[0007] According to the present invention, it is possible to provide a building fixture that allows for easy replacement of the resin cover material provided on the lower frame. [Brief explanation of the drawing]

[0008] [Figure 1] This is an interior view showing a sliding window according to the first embodiment of the present invention. [Figure 2] This is a vertical cross-sectional view showing a sliding window according to the first embodiment. [Figure 3] This is a cross-sectional view showing a sliding window according to the first embodiment. [Figure 4] This is a perspective view showing the connection between the vertical frame and the lower frame of a sliding window according to the first embodiment. [Figure 5] This is a vertical cross-sectional view showing the lower frame of a sliding window according to the first embodiment. [Figure 6] This is an enlarged vertical cross-sectional view showing the main part of the lower frame of a sliding window according to the first embodiment. [Figure 7] This diagram shows the procedure for removing the interior cover material of the lower frame of a sliding window according to the first embodiment. [Figure 8] This is a vertical cross-sectional view showing the lower frame of a sliding window according to the second embodiment. [Figure 9] This figure shows the interior-facing visible surface of the lower frame of a sliding window according to the second embodiment. [Figure 10] This is a longitudinal cross-sectional view showing the lower frame of a sliding window according to a modified example of the second embodiment. [Figure 11] This figure shows the interior-facing visible surface of the lower frame of a sliding window according to a modified example of the second embodiment. [Figure 12] This is a longitudinal cross-sectional view showing the lower frame of a sliding window according to another modification of the second embodiment. [Figure 13] This figure shows the interior-facing visible surface of the lower frame of a sliding window according to another modification of the second embodiment. [Figure 14] This is an enlarged longitudinal cross-sectional view showing the main part of the lower frame of a sliding window according to the third embodiment. [Modes for carrying out the invention]

[0009] [First Embodiment] Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. The sliding window 1, which is a building component according to this embodiment, comprises a window frame 2 and an outer sash 5 and an inner sash 6 that are arranged to slide open and closed within the window frame 2, as shown in Figures 1 to 3. The window frame 2 is a semi-external opening frame fixed to the opening in the building structure 7. In each figure, hatching of the main structural members of the sliding window 1, such as the window frame 2, outer sash 5, and inner sash 6, is omitted. Also, in the following explanation, the left-right direction of the sliding window 1 is defined as the X-axis, the up-down direction of the sliding window 1 is defined as the Y-axis, and the depth direction of the sliding window 1 is defined as the Z-axis. The X, Y, and Z axes are orthogonal to each other.

[0010] Window frame 2 is constructed by framing the upper frame 10, the lower frame 20, and the left and right vertical frames 30 and 40. As shown in Figure 2, the upper frame 10 is composed of an outdoor member 110 and an indoor member 120 made of aluminum extruded profiles (metal), and an insulating member 130 made of synthetic resin such as urethane resin that connects the outdoor member 110 and the indoor member 120. The exterior component 110 includes an exterior mounting piece 111 that is fixed to the exterior surface 71 of the building frame 7 with screws 161, a screen door rail 113, and an exterior rail 141. The interior member 120 includes an inner rail 142, a cover material fixing piece portion 121 extending in the prospective direction from the inner rail 142, and an indoor side fixing piece portion 127 fixed to the housing 7 with a screw 162.

[0011] On the exterior member 110 of the upper frame 10, a cover material 17 between the upper frame rails made of synthetic resin is attached. Also, an indoor side cover material 18 of the upper frame is attached to the interior member 120. Since the cover material 17 between the upper frame rails is arranged between the outer rail 141 and the inner rail 142 on the indoor side of the outer shutter 5 in the closed position, its length dimension is about half of the longitudinal dimension of the upper frame 10. The cover material 17 between the upper frame rails is attached to the upper frame 10 by engaging an engaging piece with a substantially L-shaped cross-section of the cover material 17 between the upper frame rails with a protruding piece of the exterior member 110.

[0012] The indoor side cover material 18 of the upper frame is a resin profile arranged over substantially the entire length in the longitudinal direction (X-axis direction) of the upper frame 10. The indoor side cover material 18 of the upper frame includes a fixing surface portion arranged along the lower surface of the cover material fixing piece portion 121, a rail cover portion extending downward from the outdoor side end of the fixing surface portion and arranged along the indoor surface of the inner rail 142, a hollow portion connected to the indoor side end of the fixing surface portion, and an engaging portion extending upward from the hollow portion and engaging with the interior member 120. The indoor side cover material 18 of the upper frame is fixed to the cover material fixing piece portion 121 with a screw 166. A drill screw or a tapping screw can be used as the screw 166, and the portion of the cover material fixing piece portion 121 where the screw 166 is screwed is a thick portion with a larger thickness dimension compared to other portions of the cover material fixing piece portion 121 so that the screw 166 can be screwed. The hollow portion is a hollow portion extending upward and downward from the fixing surface portion. The indoor side cover material 18 of the upper frame improves the heat insulation performance of the upper frame 10 by covering the indoor surface exposed on the indoor side in the upper frame 10.

[0013] The lower frame 20 is composed of an outdoor member 210 and an indoor member 220 made of aluminum extruded profiles (metal), and an insulating member 230 made of synthetic resin such as urethane resin that connects the outdoor member 210 and the indoor member 220. The exterior component 210 includes an exterior mounting piece 211 fixed to the exterior surface 71 of the building frame 7 with screws 161, a screen door rail 213, and an exterior rail 241. The interior component 220 includes an interior rail 242 and an interior fixing piece 229 that is fixed to the building structure 7 with screws 162.

[0014] The lower frame 20 is fitted with a lower frame rail cover material 25 made of synthetic resin, a lower frame upper surface cover material 26, and a lower frame inner surface cover material 27, which is the lower frame cover material of the present invention. Details of the lower frame 20, the lower frame rail cover material 25, the lower frame upper surface cover material 26, and the lower frame inner surface cover material 27 will be described later.

[0015] Furthermore, exterior wall material 75 is placed on the exterior side of the exterior mounting piece 111 of the upper frame 10 and the exterior mounting piece 211 of the lower frame 20, and backup material 76 and sealing material 77 are placed between the exterior wall material 75 and the upper surface of the exterior member 110, and between the exterior wall material 75 and the lower surface of the exterior member 210. In addition, trim materials 74 such as frames and flooring materials, which will be attached to the building structure 7 after the sliding window 1 is installed, are placed on the interior side of the interior cover material 18 of the upper frame and the interior cover material 27 of the lower frame.

[0016] As shown in Figure 3, the vertical frame 30 is formed from an aluminum extruded profile and comprises a projection piece 311, an exterior mounting piece 312 extending from the projection piece 311 in the visible direction (X-axis direction) and fixed to the exterior surface 71 of the building structure 7 with screws 161, an interior mounting piece 313 formed at the interior end of the projection piece 311 and fixed to the projection surface of the building structure 7 with screws 162, and a pull-in piece 314 extending inward from the projection piece 311 and contacting the exterior sash 5 when it is closed. A synthetic resin vertical frame cover material 35 is attached to the projection piece 311 of the vertical frame 30. The vertical frame cover material 35 has a hook-shaped outdoor engagement portion 351 formed in a substantially L-shape in cross-section facing the outdoor side, and a hook-shaped indoor engagement portion 352 formed in a substantially L-shape in cross-section facing the indoor side. The inner circumferential surface of the projection piece 311 has a groove-shaped engagement portion into which the outdoor-side engagement portion 351 and the indoor-side engagement portion 352 engage. The vertical frame cover material 35 is installed on the projection piece 311 so as to cover the interior side of the pull-in piece 314, and the projection piece 311 of the vertical frame 30 is covered by the vertical frame cover material 35 and not exposed to the interior side when the outer sash 5 is closed.

[0017] The vertical frame 40 is made of an aluminum extruded profile and comprises a projection piece 411, an exterior mounting piece 412 extending from the projection piece 411 in the visible direction (X-axis direction) and fixed to the exterior surface 71 of the building structure 7 with screws 161, an interior mounting piece 413 formed at the interior end of the projection piece 411 and fixed to the projection surface of the building structure 7 with screws 162, and a pull-in piece 414 extending inward from the projection piece 411 and contacting the interior sash 6 when it is closed. A synthetic resin vertical frame cover material 45 is attached to the projection piece 411 of the vertical frame 40. The vertical frame cover material 45 has a hook-shaped outdoor engagement portion 451 formed in a substantially L-shape in cross-section facing the outdoor side, and a hook-shaped indoor engagement portion 452 formed in a substantially L-shape in cross-section facing the indoor side. The inner circumferential surface of the prospect piece 411 has a groove-shaped engaging portion into which the outdoor-side engaging portion 451 and the indoor-side engaging portion 452 engage. The vertical frame cover material 45 is installed on the projection piece 411 so as to cover the interior side of the pull-in piece 414, and the projection piece 411 of the vertical frame 40 is covered by the vertical frame cover material 45 and not exposed to the interior side when the interior sash 6 is closed.

[0018] On the exterior side of the mounting piece 312 on the exterior side of the vertical frame 30 and the mounting piece 412 on the exterior side of the vertical frame 40, exterior wall material 75, backup material 76, and sealing material 77 are arranged, similar to the upper frame 10 and lower frame 20. In addition, decorative materials 74 such as picture frames are arranged on the interior side of the vertical frame cover materials 35 and 45.

[0019] In window frame 2, the upper frame 10 and lower frame 20 are positioned between the upper and lower ends of the vertical frames 30 and 40, and are assembled with screws that are screwed from the vertical frames 30 and 40 into the screw holes of the upper frame 10 and lower frame 20. For this reason, the pull-in pieces 314 and 414 that protrude from the inner circumferential surface of the projection piece 311 and projection piece 411 are not provided at the upper and lower ends where the upper frame 10 and lower frame 20 are positioned. As shown in Figure 4, the vertical frame cover members 35 and 45 are positioned between the upper frame interior cover member 18 and the lower frame interior cover member 27. Therefore, the lower end surfaces (edges) of the vertical frame cover members 35 and 45 are positioned above the upper surface portion 275 of the lower frame interior cover member 27 and are in contact with the upper surface portion 275. In addition, the end faces at both ends of the upper frame interior cover member 18 and the lower frame interior cover member 27 are in contact with the vertical frames 30 and 40.

[0020] As shown in Figures 1 to 3, the outer shoji screen 5 is constructed by assembling an upper frame 51, a lower frame 52, vertical frames 53, an outer meeting frame 54, and double-glazed glass 55. The interior shoji screen 6 is constructed by assembling an upper frame 61, a lower frame 62, vertical frames 63, an interior meeting frame 64, and double-glazed glass 65. The upper frames 51, 61, the lower frames 52, 62, the vertical frames 53, 63, and the inner meeting frame 64 are formed by engaging the outer profiles 511, 611, 521, 621, 531, 631, 641, which are made of aluminum extruded profiles, with the inner profiles 512, 612, 522, 622, 532, 632, 642, which are made of flame-retardant resin extruded profiles. The outer meeting frame 54 is also made of aluminum extruded profiles. Hollow sections are formed in the inner profiles 512, 612, 522, 622, 532, 632, 642. Therefore, the outer sash 5 and inner sash 6 are equipped with resin interior profiles 512, 612, 522, 622, 532, 632, and 642, and furthermore, the interior profiles 512, 612, 522, 622, 532, 632, and 642 have hollow sections, thus improving the thermal insulation performance of the sliding window 1.

[0021] [Structure of the lower frame] Next, the detailed structure of the lower frame 20 will be described with reference to Figure 5. As mentioned above, the lower frame 20 is composed of an exterior member 210, an interior member 220, and an insulation member 230. The outdoor component 210 includes an outdoor mounting piece 211, an upper surface 212, a screen door rail 213, a lower surface 214, an outdoor surface 215, a connecting piece 216, and an outer rail 241. The outdoor mounting piece 211 is a plate-shaped projection positioned along the outdoor surface 71 of the building structure 7. The upper surface 212 extends substantially along the depth direction (Z-axis direction) to form the upper surface of the outdoor member 210. The screen door rail section 213 extends upward from the outdoor-facing end of the upper section 212. The lower section 214 extends outward in the Z-axis direction, i.e., in the depth direction, from the upper end of the outdoor-facing mounting piece 211 below the upper section 212. The exterior surface portion 215 extends along the Y-axis direction and connects the vicinity of the exterior ends of the upper surface portion 212 and the lower surface portion 214. The connecting piece portion 216 extends along the Y-axis direction and connects the vicinity of the interior ends of the upper surface portion 212 and the lower surface portion 214. The hollow portion 251 is partitioned by the upper surface portion 212, the lower surface portion 214, the exterior surface portion 215, and the connecting piece portion 216. Screw holes are formed in the upper surface portion 212, facing the hollow portion 251. These screw holes are located on the outdoor side of the outer rail 241 and on the indoor side of the outdoor surface portion 215 in the Z-axis direction. The connecting piece 216 has a holding portion for holding the heat insulating member 230 and a screw hole that opens toward the interior side.

[0022] The interior member 220 comprises an upper surface portion 221, a lower surface portion 222, a connecting piece portion 223, an interior surface portion 224, a hanging piece portion 225, a rising piece portion 226, a retaining piece portion 227, a retaining piece portion 228, an interior fixing piece portion 229, and an interior rail 242. The upper portion 221 extends substantially along the depth direction (Z-axis direction) to form the upper surface of the interior member 220. The interior rail 242 extends upward from the exterior end of the upper portion 221. The lower portion 222 extends below the upper portion 221 in the Z-axis direction, that is, in the depth direction. The connecting piece 223 extends substantially along the Y-axis direction and connects the outdoor-facing ends of the upper surface portion 221 and the lower surface portion 222. The connecting piece 223 has a retaining portion formed therein for holding the heat insulating member 230. The interior surface portion 224 extends substantially along the Y-axis direction and connects the interior ends of the upper surface portion 221 and the lower surface portion 222. The hollow portion 252 is partitioned by the upper surface portion 221, the lower surface portion 222, the connecting piece portion 223, and the interior surface portion 224. In addition, a screw hole opening into the hollow portion 252 is formed on the lower surface of the upper surface portion 221.

[0023] The hanging portion 225 extends downward from the lower surface portion 222. The hanging portion 225 is configured to abut against the upper surface of the building frame 7 and to support the load of the inner sash 6 applied to the inner rail 242. As shown in an enlarged view in Figure 6, the rising piece 226 includes a first vertical surface portion 2261 extending upward from the indoor end of the upper surface portion 221 and having a projection formed on the outdoor side, an inclined surface portion 2262 extending diagonally upward toward the indoor side from the upper end of the first vertical surface portion 2261, a bent portion 2263 bent in an L-shape from the upper end of the inclined surface portion 2262, a second vertical surface portion 2264 extending upward from the bent portion 2263, and an upper end contact portion 2265 extending toward the indoor side from the upper end of the second vertical surface portion 2264.

[0024] The retaining piece portion 227 is formed in a substantially L-shape in cross-section, comprising an extension portion 2271 extending inward from the indoor end of the upper surface portion 221, and a retaining surface portion 2272 extending upward from the extension portion 2271. On the retaining surface portion 2272, a projection 2273 is formed on the surface facing the first vertical surface portion 2261. This retaining piece portion 227 constitutes a groove-shaped engaging portion with an open top.

[0025] The retaining piece portion 228 comprises a first retaining piece 2281 extending downward from the indoor end of the lower surface portion 222, a bottom surface portion 2282 extending inward from the lower end of the first retaining piece 2281, and a second retaining piece 2283 extending upward from the bottom surface portion 2282. This retaining piece portion 228 constitutes a groove-shaped engaging portion with an open top. A projection 2285 is formed on the surface of the first retaining piece 2281 facing the second retaining piece 2283. The height of the projection 2285 is set lower than the upper end of the second retaining piece 2283. A projection 2286 is formed at the upper end of the second retaining piece 2283, projecting toward the first retaining piece 2281.

[0026] The indoor-side fixing piece 229 comprises a first hanging piece 2291 extending downward from the indoor-side end of the bottom surface 2282, a mounting piece 2292 extending inward from the first hanging piece 2291, and a second hanging piece 2293 extending downward from the indoor-side end of the mounting piece 2292. In the above-described interior member 220, the interior surface portion 224, the rising piece portion 226, and the retaining piece portion 228 constitute the interior side visible surface of the lower frame 20.

[0027] As shown in Figure 2, the lower frame 20 is fitted with a lower frame rail cover material 25, a lower frame upper surface cover material 26, and a lower frame inner surface cover material 27, all made of synthetic resin. The lower frame rail cover material 25 is positioned between the outer rail 241 and the inner rail 242 on the indoor side of the outer sash 5 when it is in the closed position, and therefore its length is approximately half the length of the longitudinal dimension of the lower frame 20. The lower frame rail cover material 25 is positioned between the outer rail 241 and the inner rail 242 and is attached by engaging with the outdoor member 210.

[0028] The lower frame upper cover material 26 is a resin profile that extends over approximately the entire length of the lower frame 20 in the longitudinal direction (X-axis direction). As shown in Figure 5, the lower frame upper cover material 26 is positioned on the upper surface of the interior member 220, on the interior side of the interior rail 242, and is attached to the interior member 220 by engaging with it. The lower frame upper cover material 26 is made of hard resin. In addition, a contact piece 261 made of soft resin is formed on the interior side of the lower frame upper cover material 26, which abuts against the rising piece portion 226.

[0029] [Interior cover material for lower frame] The lower frame cover material of the present invention, the lower frame interior surface cover material 27, is a resin profile that is arranged along substantially the entire length of the lower frame 20 in the longitudinal direction (X-axis direction) and attached to the interior side surface of the lower frame 20. Interior trim materials 74, such as picture frames and flooring materials, are arranged on the interior side of the lower frame interior surface cover material 27. As shown in Figures 5 and 6, the lower frame interior surface cover material 27 comprises a cover body 271, a lower end engaging portion 272, a contact portion 273, an intermediate engaging portion 274, and an upper surface portion 275. The cover body 271 is a plate-shaped member oriented along the Y-axis.

[0030] The lower end engaging portion 272 extends outward from the lower end of the cover body 271 and further extends downward, forming a roughly L-shaped cross-section, or a downward-facing hook shape. A claw portion 2721 is formed on the lower end interior surface of the lower end engaging portion 272. The claw portion 2721 has an inclined surface 2722 that is inclined upward from the lower end of the lower end engaging portion 272 towards the interior, that is, towards the second retaining piece 2283, and a locking surface 2723 formed outward from the upper end of the inclined surface. This lower end engaging portion 272 engages with the retaining piece portion 228, which is the engaged portion.

[0031] The contact portion 273 is formed at a height of approximately 2 / 3 of the height dimension of the cover body 271 from the top, extends outward from the cover body 271, and further protrudes downward, forming a roughly L-shaped cross-section. As shown in Figure 6, the contact portion 273 is provided at a height near the upper end of the trim piece 74 which is positioned on the indoor side of the lower frame indoor surface cover material 27, so as not to cause the lower frame indoor surface cover material 27 to bend and deform when the trim piece 74 is brought into contact with the lower frame indoor surface cover material 27 during finishing work at the construction site.

[0032] The intermediate engaging portion 274 is formed at a height of approximately 1 / 3 of the height dimension of the cover body 271 from the top, and comprises an extension portion 2741 extending outward from the cover body 271 and an engaging piece 2742 extending downward from the extension portion 2741, forming a roughly L-shaped cross-section, or a downward-facing hook shape. This intermediate engaging portion 274 engages with the retaining piece portion 227, which is the engaged portion.

[0033] The upper portion 275 is formed in a substantially L-shape in cross-section, comprising an extension portion 2751 extending outward from the upper end of the cover body 271 and a protruding piece 2752 projecting downward from the extension portion 2751. As shown in Figures 5 and 6, a gap is formed between the rising piece portion 226 and the protruding piece 2752, and the tip of the contact piece 261 of the lower frame upper cover material 26 is positioned in this gap and hidden.

[0034] The lower frame interior surface cover material 27 is installed so as to cover the interior surface portion 224, the rising piece portion 226, and the retaining piece portion 228, which are the interior-facing surfaces of the lower frame 20. When the lower frame interior surface cover material 27 is attached to the lower frame 20, as shown in Figure 6, the upper end contact portion 2265 contacts the lower surface of the upper surface portion 275 and the exterior surface of the cover body 271. The engaging piece 2742 contacts the projection 2273, and the intermediate engaging portion 274 engages with the retaining piece portion 227. The lower end engaging portion 272 is positioned within a groove defined by the first retaining piece 2281, the bottom surface portion 2282, and the second retaining piece 2283 of the retaining piece portion 228. The contact portion 273 is positioned opposite the interior surface portion 224. The interior surface of the cover body 271 of the lower frame interior surface cover material 27 is a flat surface and is in contact with the exterior surface of the trim material 74. For this reason, the lower frame interior surface cover material 27 is positioned on the exterior side of the trim material 74.

[0035] [Installation method for the inner surface cover material of the lower frame] Next, the procedure for attaching the lower frame interior cover material 27 to the lower frame 20 of the window frame 2 will be explained. When attaching the lower frame interior surface cover material 27 to the lower frame 20 of the framed window frame 2, before attaching the vertical frame cover materials 35 and 45, as shown in Figure 5, the lower end engaging portion 272 is inserted into the groove of the retaining piece 228 with the lower frame interior surface cover material 27 tilted diagonally with respect to the interior surface of the lower frame 20. For example, the tip of the lower end engaging portion 272 is moved downward along the first retaining piece 2281 and the upper surface portion 275 of the lower frame interior surface cover material 27 is rotated toward the rising piece portion 226 while the tip of the lower end engaging portion 272 is in contact with the projection 2285. Furthermore, the upper surface portion 275 is rotated further toward the rising piece portion 226 while the locking surface 2723 is in contact with the lower surface of the projection 2286. Then, when the contact portion 273 comes into contact with the interior surface portion 224, or when the intermediate engaging portion 274 comes into contact with the inclined surface portion 2262, the lower frame interior surface cover material 27 moves downward. As a result, the upper surface portion 275 comes into contact with the upper surface of the upper end contact portion 2265, the end of the upper end contact portion 2265 comes into contact with the cover body 271, and the intermediate engaging portion 274 engages with the retaining piece portion 227, thereby attaching the lower frame interior surface cover material 27 to the lower frame 20.

[0036] After attaching the lower frame interior cover material 27 to the lower frame 20 and the upper frame interior cover material 18 to the upper frame 10, the vertical frame cover materials 35 and 45 are attached to the vertical frames 30 and 40. As a result, the lower frame interior cover material 27 abuts against the edges of the vertical frame cover materials 35 and 45 and cannot move upward, thus preventing it from coming off the lower frame 20. After attaching the window frame 2 to the joinery frame 7, the trim piece 74 is attached. When the trim piece 74 abuts against the lower frame interior cover material 27, the contact portion 273 abuts against the interior surface portion 224, supporting the force applied from the trim piece 74. This prevents the cover body 271 from bending and deforming.

[0037] [How to remove the inner surface cover material of the lower frame] Next, the procedure for removing the lower frame interior cover material 27 will be explained based on Figure 7. As shown in Figure 7(A), the lower frame interior surface cover material 27 is positioned between the lower frame 20 and the trim material 74. As shown in Figure 7(B), the lower frame interior surface cover material 27 is pulled upward while the upper surface portion 275 is tilted towards the interior. At this time, the lower frame interior surface cover material 27 can also be tilted automatically by pulling up the lower frame interior surface cover material 27 while bringing the intermediate engaging portion 274 into contact with the inclined surface portion 2262. Furthermore, since the cover body 271 is thin, the cover body 271 can also be curved and tilted by the worker moving the upper surface portion 275 towards the interior.

[0038] Furthermore, as shown in Figure 7(C), the lower frame interior surface cover material 27 is tilted and lifted up. At this time, the upper half of the first retaining piece 2281 is tilted outward, and the distance between the first retaining piece 2281 and the trim material 74 gradually widens upward. Therefore, the lower end engaging portion 272 can be brought into contact with the first retaining piece 2281, or the intermediate engaging portion 274 can be brought into contact with the second vertical surface portion 2264, allowing the lower frame interior surface cover material 27 to be smoothly lifted up while increasing the tilt angle of the lower frame interior surface cover material 27.

[0039] Then, as shown in Figure 7(D), by moving the lower end engaging portion 272 to the vicinity of the upper end of the first retaining piece 2281, the inclination angle of the lower frame inner surface cover material 27 can be further increased. Furthermore, as shown in Figure 7(E), by moving the lower end engaging portion 272 to a position where it contacts the upper end of the first retaining piece 2281 or the lower end of the inner surface portion 224, the inclination angle of the lower frame inner surface cover material 27 can be further increased, and the lower frame inner surface cover material 27 can be removed without the intermediate engaging portion 274 interfering with the retaining piece portion 227. As described above, even with the trim material 74 installed, the lower frame interior surface cover material 27, which is positioned between the interior surface of the lower frame 20 and the trim material 74, can be moved upward and removed.

[0040] When installing a new lower frame interior cover material 27 between the lower frame 20 and the trim material 74, simply insert the lower frame interior cover material 27 between the lower frame 20 and the trim material 74 in the reverse order of the removal procedure shown in Figure 7, from Figure 7(E) to Figure 7(A).

[0041] [Effects of the First Embodiment] In the sliding window 1 of this embodiment, the lower frame interior cover material 27 is positioned on the exterior side of the lower frame 20 than the trim material 74 which is positioned on the interior side of the lower frame 20. Therefore, the lower frame interior cover material 27 can be removed from or attached to the lower frame 20 even with the trim material 74 positioned on the interior side of the lower frame 20. As a result, if the lower frame interior cover material 27 is damaged, only the lower frame interior cover material 27 can be attached or detached without removing the trim material 74, improving the ease of maintenance when replacing the lower frame interior cover material 27. Since the lower ends of the vertical frame cover materials 35 and 45 abut against the upper surface of the lower frame interior cover material 27, the lower frame interior cover material 27 cannot be moved upward and removed when the vertical frame cover materials 35 and 45 and the lower frame interior cover material 27 are attached to the window frame 2. For this reason, when the sliding window 1 is installed and in use in the building, the lower frame interior cover material 27 will not come off unless the vertical frame cover materials 35 and 45 are removed, and the attachment state of the lower frame interior cover material 27 can be reliably maintained.

[0042] The lower frame interior surface cover material 27 is equipped with a contact portion 273 that can abut against the interior surface of the lower frame 20. Therefore, when a trim material 74, such as flooring, which is placed on the interior side of the lower frame 20, is attached to the building structure 7 by abutting against the lower frame interior surface cover material 27, the contact portion 273 abuts against the interior surface portion 224, which is the interior surface, allowing it to receive the force applied by the trim material 74 and preventing the cover body 271 from bending and deforming.

[0043] The lower frame 20 is provided with retaining pieces 227 and 228, which are groove-shaped engaging parts with an open top, on the indoor-facing surface, and the lower frame interior surface cover material 27 is provided with an intermediate engaging part 274 and a lower end engaging part 272, which are downward-facing hook-shaped engaging parts. As a result, with a simple structure, the lower frame interior surface cover material 27 can be removed upward from the indoor-facing surface of the lower frame 20, and can be installed by inserting the lower frame interior surface cover material 27 downward from the indoor-facing surface.

[0044] Since the upper end contact portion 2265 of the lower frame 20 is in contact with the upper end outer surface and the lower surface of the upper portion 275 of the cover body 271 of the lower frame interior surface cover material 27, the resin lower frame interior surface cover material 27 can be reinforced with the metal interior member 220 of the lower frame 20.

[0045] The lower frame interior surface cover material 27 has a claw portion 2721 formed on the lower end engaging portion 272 and a projection 2286 formed on the second retaining piece 2283. Therefore, when the lower frame interior surface cover material 27 is moved upward, the locking surface 2723 of the claw portion 2721 is locked into the projection 2286, preventing the lower frame interior surface cover material 27 attached to the lower frame 20 from coming off unintentionally. In addition, the upper surface portion 275 has a protruding piece 2752 formed on it. For example, when a user moves the upper surface portion 275 inward, the protruding piece 2752 comes into contact with the rising piece portion 226, restricting its movement and preventing the lower frame interior surface cover material 27 from bending and deforming.

[0046] The lower frame interior surface cover material 27 has a lower end engaging portion 272, a contact portion 273, an intermediate engaging portion 274, and an upper surface portion 275 that protrude outward from the cover body 271, and these portions are formed spaced apart in the vertical direction and along the longitudinal direction, thereby reinforcing the strength of the plate-shaped cover body 271. For example, if the lower frame interior surface cover material 27 expands due to heat, both ends of the lower frame interior surface cover material 27 in the longitudinal direction abut against the vertical frames 30 and 40, restricting its movement. As a result, the lower frame interior surface cover material 27 may bend so that its central portion in the X-axis direction bulges inward. However, the lower end engaging portion 272, the contact portion 273, the intermediate engaging portion 274, and the upper surface portion 275, which are continuous in the X-axis direction, also function as reinforcing ribs, thus suppressing the bending of the lower frame interior surface cover material 27.

[0047] [Second Embodiment] The second embodiment adds a structure to prevent shrinkage of the lower frame interior surface cover material 27. For this reason, components common to the first embodiment are denoted by the same reference numerals and their descriptions are omitted. As shown in Figures 8 and 9, the sliding window 1B of the second embodiment has locking pieces 2241 formed on the interior surface portion 224 of the lower frame 20B by protruding processing. That is, a part of the interior surface portion 224 is cut into a U-shape to form the locking piece 2241, and this locking piece 2241 is provided as a protruding part that extends outwards. One of these locking pieces 2241 is formed near both the left and right ends in the longitudinal direction (X-axis direction) of the lower frame 20B. Furthermore, the end faces of the locking pieces 2241 that protrude most inwards are formed to face the left and right end faces of the lower frame 20B. The contact portion 273 of the lower frame interior surface cover material 27 has a notch 2731 formed therein, the position of which corresponds to the locking piece 2241 in the X-axis direction. Therefore, as shown in Figure 9, the locking piece 2241 is positioned in the notch 2731 where the contact portion 273 has been removed.

[0048] With the above configuration, the sliding window 1B of the second embodiment can suppress the contraction of the lower frame interior surface cover material 27 due to temperature changes. That is, as shown in Figure 4, both ends of the lower frame interior surface cover material 27 are in contact with the vertical frames 30 and 40, so thermal expansion of the lower frame interior surface cover material 27 can be suppressed, just as in the first embodiment. On the other hand, in winter when temperatures drop, the lower frame interior surface cover material 27 may shrink. When the lower frame interior surface cover material 27 shrinks in the X-axis direction, the cut surface of the notch 2731 of the contact portion 273 comes into contact with the locking piece 2241, thereby suppressing the shrinkage of the lower frame interior surface cover material 27. Therefore, the cut surface of the notch 2731 is a receiving portion that comes into contact with the locking piece 2241, which is a protruding portion, when the lower frame interior surface cover material 27 shrinks in the longitudinal direction due to temperature changes, thereby suppressing the shrinkage of the lower frame interior surface cover material 27.

[0049] [Effects of the second embodiment] The sliding window 1B of the second embodiment has the same configuration as the first embodiment, and therefore the same effects as the first embodiment can be obtained. Furthermore, because it has a locking piece 2241 which is a protruding part and a notch 2731 which is a receiving part, shrinkage of the lower frame interior surface cover material 27 can be suppressed. Since the protruding locking piece 2241 is formed by protruding, there is no need to attach another part, thus reducing costs. In addition, the receiving portion is constructed by cutting out a part of the contact portion 273, so it can be manufactured at a low cost. Furthermore, since the locking piece 2241 is positioned in the notch 2731, it is possible to restrict the sliding of the lower frame interior surface cover material 27 in the X-axis direction relative to the lower frame 20B. Therefore, when connecting the vertical frames 30, 40 to the lower frame 20B after attaching the lower frame interior surface cover material 27 to the lower frame 20B, it is possible to prevent the lower frame interior surface cover material 27 from sliding off the lower frame 20B.

[0050] [Modified version of the second embodiment] The configuration of the protruding portion is not limited to the locking piece 2241; it can be any portion that protrudes inward from the interior-facing surface of the lower frame. For example, as shown in Figures 10 and 11, the lower frame 20C of the sliding window 1C may be configured by fixing a block-shaped locking member 281 to the interior surface portion 224 with screws 282. That is, the locking member 281 that forms the protruding portion is fixed to the interior surface portion 224 by inserting screws 282 into through holes formed in the locking member 281 and through holes formed in the interior surface portion 224, and screwing these screws 282 into nuts 283 provided on the hollow portion 252 side of the interior surface portion 224. On the other hand, a notch 2731 can be formed in the contact portion 273 of the lower frame interior surface cover material 27, with its position in the X-axis direction corresponding to the locking member 281.

[0051] In this sliding window 1C, the same effects as in the second embodiment can be obtained. Furthermore, since the block-shaped locking member 281 contacts the cut surface of the notch 2731 even when the lower frame interior surface cover material 27 expands due to heat, it can function not only when the lower frame interior surface cover material 27 contracts, but also when it expands due to heat.

[0052] [Other variations of the second embodiment] Furthermore, the protruding portion may be made of a screw 291 fixed to the interior surface portion 224, as shown in Figures 12 and 13, for example, the lower frame 20D of the sliding window 1D. That is, the screw 291 is inserted into a through hole formed in the interior surface portion 224, and this screw 291 is screwed into a nut 292 provided on the hollow portion 252 side of the interior surface portion 224, thereby fixing the screw 291, which will be the protruding portion, to the interior surface portion 224. A notch 2731 can be formed in the contact portion 273 of the lower frame interior surface cover material 27, with its position in the X-axis direction corresponding to the screw 291.

[0053] In this sliding window 1D, the same effect as in the sliding window 1C using the locking member 281 can be obtained. Furthermore, since the screw 291 is used as a protruding part, the number of parts can be reduced compared to the sliding window 1C using the locking member 281, thereby reducing costs.

[0054] [Third Embodiment] As shown in Figure 14, the sliding window 1E of the third embodiment has some modifications to the structure of the lower frame 20E and some modifications to the structure of the lower frame interior surface cover material 27E. For this reason, the same reference numerals are used for components that are the same as those in the sliding window 1 of the first embodiment, and their descriptions are omitted. The lower frame 20E has been modified in part by altering a portion of the rising piece 226E of the interior member 220E. Specifically, the extension dimension of the bent portion 2263E has been increased to bring the second vertical surface portion 2264 closer to the cover body 271, and the upper end contact portion 2265E has been extended diagonally upward from the second vertical surface portion 2264. As a result, the upper surface of the upper end contact portion 2265E is an inclined surface 2266 that is inclined diagonally upward toward the interior side. The lower frame interior cover material 27E has modified shapes for the extension portion 2751E and the protruding piece 2752E of the upper surface portion 275E to match the shape of the upper end contact portion 2265E. Specifically, the extension portion 2751E is configured such that its exterior surface is almost flush with the exterior surface of the second vertical surface portion 2264. Furthermore, the lower surface of the protruding piece 2752E of the upper surface portion 275E is an inclined surface 2753 that slopes diagonally downward toward the exterior side. The inclined surface 2266 of the upper end contact portion 2265E is in contact with this inclined surface 2753 of the upper surface portion 275E.

[0055] [Effects of the third embodiment] The sliding window 1E of the third embodiment can achieve the same effect by having the same configuration as the sliding window 1 of the first embodiment. Furthermore, since the second vertical surface portion 2264 is positioned close to the cover body 271, the thickness dimensions of the upper part of the cover body 271 and the rising piece portion 226E can be reduced, and the step dimension between the interior surface of the inner sash 6 and the cover body can also be reduced. As a result, the interior surfaces of the lower frame 20E and the inner sash 6 can be made to appear flat, improving the aesthetic design of the sliding window 1E. Furthermore, since a rising portion 226E is provided along the cover body 271, strength can be ensured compared to the case where only the cover body 271 is provided. In particular, the lower frame 20E is sometimes stepped on by users when entering or exiting the balcony or garden from the sliding window 1 in the case of a patio window, so the lower frame interior surface cover material 27E also needs strength, but since the second vertical surface portion 2264 is arranged along the cover body 271, the strength can be improved. The upper end contact portion 2265E extends diagonally upward to provide an inclined surface 2266, and this inclined surface 2266 is in contact with the inclined surface 2753 on the lower surface portion 275E. Therefore, when the lower frame interior surface cover material 27E is attached to the lower frame 20E, the upper end contact portion 2265E can restrict the movement of the upper surface portion 275E in the Z-axis direction. Furthermore, when removing the lower frame interior surface cover material 27E from the lower frame 20E, the inclined surface 2266 of the upper end contact portion 2265E comes into contact with the inclined surface 2753 of the protruding piece 2752E and acts as a guide surface, allowing the lower frame interior surface cover material 27E to be smoothly pulled diagonally upward along the inclined surface 2266.

[0056] [Differentiation] The structure of the lower frame cover material, the lower frame interior surface cover material 27, 27E, is not limited to the embodiments described above. For example, the lower frame interior surface cover material 27 has a single contact portion 273 formed continuously in the X-axis direction, but two or more contact portions formed spaced apart vertically may be provided. Also, when the height dimension of the lower frame visible surface is small, or when the distance between the intermediate engaging portion 274 and the lower end engaging portion 272 is small, a lower frame interior surface cover material without a contact portion 273 may be used. Furthermore, in the second embodiment, the receiving portion was formed by the notch 2731 of the contact portion 273, but the receiving portion may be formed in the intermediate engaging portion 274, and protrusions may be formed in the first vertical surface portion 2261 and the retaining piece portion 227.

[0057] In the embodiments described above, the lower ends of the vertical frame cover members 35 and 45 were in contact with the upper surfaces 275 and 275E of the lower frame interior surface cover members 27 and 27E, but they may be positioned close to each other without contact. That is, the vertical frame cover members 35 and 45 should be positioned above the lower frame interior surface cover members 27 and 27E, and their upward movement should be restricted so that they do not come off the lower frames 20 and 20E. The configuration of the lower frames 20, 20B, 20C, 20D, and 20E is not limited to the configuration in which a metal exterior member 210 and an interior member 220 are connected by a resin heat insulating member 230, as in the above embodiment. The entire lower frame may be constructed from an aluminum extruded profile, with an interior lower frame cover material 27 attached to its interior facing surface.

[0058] Since the present invention can be used in joinery in which a resin lower frame interior cover material is attached to the interior surface of the lower frame, it is not limited to sliding windows 1, but can be widely used in joinery of various window types such as single-hung windows, double-hung windows, casement windows, and hinged windows.

[0059] [Summary of the invention] The present invention relates to a window frame comprising an upper frame, a lower frame, and left and right vertical frames, wherein a resin vertical frame cover material is detachably attached to the vertical frame, a resin lower frame cover material is detachably attached to the indoor-facing surface of the lower frame, the lower frame cover material is positioned on the outdoor side of the interior-facing material positioned on the indoor side of the lower frame, the lower end surface of the vertical frame cover material is positioned above the lower frame cover material, the lower frame cover material can be removed from the position between the indoor-facing surface and the interior-facing material when the vertical frame cover material is removed from the vertical frame, and can be inserted between the indoor-facing surface and the interior-facing material and attached to the indoor-facing surface. According to the present invention, the lower frame cover material is positioned on the exterior side of the lower frame than the trim material positioned on the interior side of the lower frame. Therefore, the lower frame cover material can be removed from or attached to the lower frame even with the trim material positioned on the interior side of the lower frame. As a result, if the lower frame cover material is damaged, only the lower frame cover material can be attached or detached without removing the trim material, improving the workability when replacing the lower frame cover material. Furthermore, since the vertical frame cover material is positioned above the lower frame cover material, when the vertical frame cover material and the lower frame cover material are attached to the window frame, the lower frame cover material will come into contact with the vertical frame cover material if moved upwards, preventing further movement and thus preventing the lower frame cover material from being removed from the lower frame. For this reason, when the building is installed and in use, the lower frame cover material will not come off unless the vertical frame cover material is removed, ensuring that the lower frame cover material is securely attached.

[0060] In the building fittings of the present invention, it is preferable that the lower frame cover material comprises a plate-shaped cover body and a contact portion formed at an intermediate position in the vertical direction on the exterior surface of the cover body, which is capable of contacting the interior surface. According to the present invention, the lower frame cover material is provided with a contact portion that can abut against the interior-facing surface of the lower frame. Therefore, when a structural material such as flooring material, which is placed on the interior side of the lower frame, is attached to the building structure by abutting against the lower frame cover material, the contact portion can receive the force applied by the structural material by abutting against the interior-facing surface, thereby preventing the cover body from bending and deforming.

[0061] In the building fitting of the present invention, the lower frame cover material comprises a plate-shaped cover body and downward-facing hook-shaped engaging portions provided vertically spaced apart on the exterior surface of the cover body, and preferably the interior-facing surface comprises an engaged portion formed in the shape of a recessed groove with an open top, into which the engaging portion engages. According to the present invention, a groove-shaped engaging portion with an open top is provided on the indoor-facing surface of the lower frame, and a downward-facing hook-shaped engaging portion is provided on the lower frame cover material. As a result, the lower frame cover material can be removed upward from the indoor-facing surface of the lower frame with a simple structure, and can be installed by inserting the lower frame cover material downward from the indoor-facing surface.

[0062] In the building fittings of the present invention, it is preferable that the interior-facing surface is provided with a protruding portion that projects inward, and that the lower frame cover material has a receiving portion that contacts the protruding portion to suppress contraction when it shrinks. According to the present invention, since a protrusion is provided on the lower frame side and a receiving portion is provided on the lower frame cover material side, when the lower frame cover material shrinks in the longitudinal direction, the protrusion comes into contact with the receiving portion, thereby restricting the shrinkage of the lower frame cover material and suppressing its contraction.

[0063] In the building fittings of the present invention, the lower frame cover material comprises a plate-shaped cover body and an upper surface portion extending outward from the upper end of the cover body, and the lower frame preferably has an upper end contact portion that abuts against the upper end outward surface of the cover body and the lower surface of the upper surface portion. According to the present invention, the upper end contact portion of the lower frame is in contact with the upper end outer surface and the lower surface of the upper part of the cover body of the lower frame cover material, so that the resin lower frame cover material can be reinforced with a metal lower frame.

[0064] In the building fittings of the present invention, the lower frame cover material comprises a plate-shaped cover body and an upper surface portion extending outward from the upper end of the cover body, wherein the lower surface of the upper surface portion is inclined diagonally downward toward the outward direction, and the lower frame preferably has an upper end contact portion having an inclined surface that contacts the lower surface of the upper surface portion of the cover body. According to the present invention, since the inclined surface provided at the upper end contact portion is in contact with the inclined surface on the lower surface of the upper part of the lower frame cover material, when the lower frame cover material is attached to the lower frame, the upper part can be restricted from moving in the depth direction by the upper end contact portion. Furthermore, when removing the lower frame cover material from the lower frame, the inclined surface of the upper end contact portion acts as a guide surface, allowing the lower frame cover material to be smoothly pulled up diagonally. [Explanation of symbols]

[0065] 1...Sliding window, 1B...Sliding window, 1C...Sliding window, 1D...Sliding window, 1E...Sliding window, 2...Window frame, 7...Structure, 10...Upper frame, 20...Lower frame, 20B...Lower frame, 20C...Lower frame, 20D...Lower frame, 20E...Lower frame, 27...Lower frame interior cover material, 27E...Lower frame interior cover material, 30...Vertical frame, 35...Vertical frame cover material, 40...Vertical frame, 45...Vertical frame cover material, 74...Trim material, 21 0...Exterior member, 220...Interior member, 220E...Interior member, 221...Upper part, 222...Lower part, 223...Connecting piece, 226...Rising piece, 226E...Rising piece, 227...Retaining piece, 228...Retaining piece, 229...Interior side fixing piece, 230...Insulation member, 271...Cover body, 272...Lower end engaging part, 273...Contact part, 274...Intermediate engaging part, 275...Upper part, 2 75E...Top surface, 281...Locking member, 282...Screw, 283...Nut, 291...Screw, 292...Nut, 2241...Locking piece, 2261...First vertical surface, 2262...Inclined surface, 2263...Bent section, 2263E...Bent section, 2264...Second vertical surface, 2265...Upper end contact section, 2265E...Upper end contact section, 2266...Inclined surface, 2271...Extended section, 2272...Retainer Surface part, 2273...Protrusion, 2281...First holding piece, 2282...Bottom part, 2283...Second holding piece, 2285...Protrusion, 2286...Protrusion, 2721...Claw part, 2722...Slanted surface, 2723 ...Locking surface, 2731...Notch, 2741...Extending part, 2742...Engaging piece, 2751...Extending part, 2751E...Extending part, 2752...Protruding piece, 2752E...Protruding piece, 2753...Slope surface.

Claims

1. A window frame comprising an upper frame, a lower frame, and left and right vertical frames, A resin vertical frame cover is detachably attached to the aforementioned vertical frame. A resin lower frame cover is detachably attached to the indoor-facing surface of the aforementioned lower frame. The lower frame cover material is positioned on the exterior side of the lower frame, rather than on the interior side of the lower frame. The lower end surface of the vertical frame cover material is positioned above the lower frame cover material. The lower frame cover material can be removed from the position between the interior surface and the trim material when the vertical frame cover material is removed from the vertical frame, and can be inserted between the interior surface and the trim material and attached to the interior surface. The aforementioned lower frame cover material is A plate-shaped cover body, The cover body comprises downward-facing hook-shaped engaging portions provided at vertically spaced intervals on its outdoor surface, The interior-facing surface is formed in the shape of a recessed groove with an open top, and includes an engaged portion into which the engaging portion engages. A type of joinery characterized by its features.

2. A window frame comprising an upper frame, a lower frame, and left and right vertical frames, A resin vertical frame cover is detachably attached to the aforementioned vertical frame. A resin lower frame cover is detachably attached to the indoor-facing surface of the aforementioned lower frame. The lower frame cover material is positioned on the exterior side of the lower frame, rather than on the interior side of the lower frame. The lower end surface of the vertical frame cover material is positioned above the lower frame cover material. The lower frame cover material can be removed from the position between the interior surface and the trim material when the vertical frame cover material is removed from the vertical frame, and can be inserted between the interior surface and the trim material and attached to the interior surface. The aforementioned interior-facing surface is provided with a projection that protrudes inward. The lower frame cover material has a receiving portion that contacts the protruding portion to suppress contraction when it shrinks. A type of joinery characterized by its features.

3. A window frame comprising an upper frame, a lower frame, and left and right vertical frames, A resin vertical frame cover is detachably attached to the aforementioned vertical frame. A resin lower frame cover is detachably attached to the indoor-facing surface of the aforementioned lower frame. The lower frame cover material is positioned on the exterior side of the lower frame, rather than on the interior side of the lower frame. The lower end surface of the vertical frame cover material is positioned above the lower frame cover material. The lower frame cover material can be removed from the position between the interior surface and the trim material when the vertical frame cover material is removed from the vertical frame, and can be inserted between the interior surface and the trim material and attached to the interior surface. The aforementioned lower frame cover material is A plate-shaped cover body, The cover body comprises an upper surface portion extending outwards from the upper end, The lower surface of the aforementioned upper portion is inclined diagonally downward toward the outside. The lower frame has an upper end contact portion which has an inclined surface that contacts the lower surface of the upper portion of the cover body. A type of joinery characterized by its features.

4. In the joinery according to any one of claims 1 to 3, The aforementioned lower frame cover material is A plate-shaped cover body, The cover body comprises a contact portion formed at an intermediate position in the vertical direction on the outdoor surface of the cover body, which is capable of contacting the indoor surface. A type of joinery characterized by its features.

5. In the joinery according to any one of claims 1 to 3, The aforementioned lower frame cover material is A plate-shaped cover body, The cover body comprises an upper surface portion extending outwards from the upper end, The lower frame has an upper end contact portion that contacts the upper end outer surface of the cover body and the lower surface of the upper portion. A type of joinery characterized by its features.

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