Wooden composite window frames

Abstract

When renovating window frames, instead of replacing the entire window frame, only the visible structural elements exposed within the window frame opening, such as wooden composite horizontal or wooden composite vertical frames, are replaced to reduce costs. [Solution] The window frame of the externally sliding window consists of a visible wooden upper frame 11b2, wooden lower frame 12b2, and wooden vertical frames 13b2, 14b2, which have a large portion exposed to the window frame opening, and a concealing wooden upper frame 11b1, wooden lower frame 12b1, and wooden vertical frames 13b1, 14b1, which are made of a different piece of wood from the visible wooden window frame and are hardly exposed to the window frame opening, and are detachably attached to the visible wooden window frame. The concealing wooden upper frame 11b1, wooden lower frame 12b1, and wooden vertical frames 13b1, 14b1 and the visible wooden upper frame 11b2, wooden lower frame 12b2, and wooden vertical frames 13b2, 14b2 are detachably fixed with L-shaped fixing brackets 11b4, 12b4, 13b4, 14b4 and wood tapping screws 42, respectively.

Description

Technical Field

[0001] The present invention relates to a wooden composite sash provided with a shoji in a window frame opening surrounded by left and right vertical frames having a wooden composite vertical frame and a metal vertical frame and upper and lower horizontal frames having a wooden composite horizontal frame and a metal horizontal frame. In particular, the present invention relates to a wooden composite sash provided with a wooden composite shoji that surrounds the four sides of a glass part with left and right wooden composite vertical frames having a wooden vertical stile and a metal vertical cover and upper and lower wooden composite horizontal frames having a wooden horizontal stile and a metal horizontal cover.

Background Art

[0002] In addition to a resin composite shoji that surrounds the four sides of a glass part with a resin composite frame combining a metal frame such as an aluminum frame and a resin frame, there is also a resin composite shoji that surrounds the four sides of a glass part with a wooden composite frame incorporating a metal cover as a metal frame, and a wooden composite sash in which the wooden composite shoji is provided in a window space formed by left and right vertical frames and upper and lower horizontal frames having a wooden window frame and a metal cover has been proposed (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, the exposed parts of the window frame opening such as the upper frame, lower frame, and vertical frame made of wood are not only stepped on by people or hit by objects, but also cannot avoid aging deterioration due to ultraviolet rays or the like incident from the window frame opening. When it is desired to replace with a new window frame during remodeling such as changing the design of the window frame or maintenance, if the exposed parts of the window frame opening such as the upper frame, lower frame, and vertical frame made of wood are fixed to structural materials such as columns and beams, it is difficult to replace them with a new window frame and the cost is high.

[0005] Therefore, the present invention was made to solve these problems, and aims to provide a wooden composite sash that can reduce costs by replacing only the visible structural parts of the wooden composite horizontal frame or wooden composite vertical frame that are exposed in the window frame opening, without replacing the entire window frame when renovating the window frame. [Means for solving the problem]

[0006] To solve the aforementioned problems, the wooden composite sash according to the present invention is a wooden composite sash in which a sash is provided in a window frame opening surrounded by left and right vertical frames having wooden composite vertical frames and metal vertical frames, and upper and lower horizontal frames having wooden composite horizontal frames and metal horizontal frames, wherein the wooden composite horizontal frame and wooden composite vertical frame each comprise a visible wooden window frame exposed to the window frame opening and a concealing wooden window frame made of a different piece of wood from the visible wooden window frame, which is not exposed to the window frame opening on the opposite side of the window frame opening and is detachably attached to the visible wooden window frame, and the concealing wooden window frame is fixed to the corresponding metal horizontal frame or metal vertical frame with screws. Furthermore, the wooden composite sash according to the present invention is characterized in that the visible wooden window frame is provided with a metal or resin engaging portion that opens toward the exterior, while the metal horizontal frame and metal vertical frame are each provided with a fixing piece for fixing the corresponding concealed wooden window frame with screws, and also with an engaged portion that engages with the engaging portion of the visible wooden window frame. When the visible wooden window frame is pushed out from the interior toward the exterior, the engaging portion of the visible wooden window frame engages with the engaged portion of the concealed wooden window frame and enters an engaged state. When it is pulled out from the exterior toward the interior in that engaged state, the engaging portion of the visible wooden window frame becomes disengaged from the engaged portion of the concealed wooden window frame and can be removed from the concealed wooden window frame. Furthermore, the wooden composite sash according to the present invention is characterized in that the visible wooden window frame is provided to protrude inward from the hidden wooden window frame, and L-shaped brackets are provided on the surface of the visible wooden window frame that faces the hidden wooden window frame and protrudes from the hidden wooden window frame, for detachably fixing the visible wooden window frame and the hidden wooden window frame with screws. Furthermore, the wooden composite sash according to the present invention is also characterized in that the metal horizontal frame and the metal vertical frame are each provided with an airtight material that abuts against the sash in accordance with the position of the outdoor end face of the corresponding visible wooden window frame. Furthermore, the wooden composite sash according to the present invention is also characterized in that the sash is a wooden composite sash in which the glass portion is surrounded on all four sides by left and right wooden composite vertical frames having wooden vertical frames and metal vertical covers, and upper and lower wooden composite horizontal frames having wooden horizontal frames and metal horizontal covers. [Effects of the Invention]

[0007] In the wooden composite sash according to the present invention, the wooden composite horizontal frame and the wooden composite vertical frame each comprise a visible wooden window frame that is exposed to the window frame opening, and a concealed wooden window frame made of a different piece of wood from the visible wooden window frame, which is hardly exposed to the window frame opening and is detachably attached to the visible wooden window frame, and the concealed wooden window frame is fixed to the corresponding metal horizontal frame or metal vertical frame with screws. Therefore, while the concealing wooden window frame is fixed with screws to the corresponding metal horizontal or vertical frame, the visible wooden window frame is detachable from the concealing wooden window frame. This eliminates the need to replace the entire window frame when redesigning or maintaining the window frame. The visible wooden window frame that is exposed in the window frame opening of a wooden composite horizontal or wooden composite vertical frame can be removed and replaced from the concealing wooden window frame, which is fixed with screws to the metal horizontal or vertical frame, allowing for low-cost replacement of the visible portion of the window frame. [Brief explanation of the drawing]

[0008] [Figure 1]This is an interior front view of an outward-moving sliding window, which is an example of a wooden composite sash employing a wooden composite shoji screen according to an embodiment of the present invention, as seen from the interior side. [Figure 2] This is a cross-sectional view of an outward-moving sliding window, which is an example of a wooden composite sash employing a wooden composite shoji screen according to an embodiment of the present invention. [Figure 3] This is a cross-sectional view showing an enlarged view of the left side of the externally sliding window of the embodiment shown on the left side of Figure 2. [Figure 4] (a) to (d) are front view, right side view, top view, and cross-sectional view along line A-A' in Figure 4(b) of the L-shaped fixing bracket that secures the concealing wooden vertical frame and the visible wooden vertical frame of the wooden composite sash according to the embodiment of the present invention. [Figure 5] (a) to (d) are front view, right side view, top view, and cross-sectional view along line B-B' in Figure 5(b), respectively, of the engaging fitting fixed to the metal vertical frame of the left vertical frame constituting the wooden composite sash according to the embodiment of the present invention. [Figure 6] (a) to (d) are front view, right side view, top view, and cross-sectional view along line C-C' in Figure 6(b), respectively, of the engaging fitting fixed to the visible wooden vertical frame of the left vertical frame constituting the wooden composite sash according to the embodiment of the present invention. [Figure 7] This is a diagram showing the installation locations of L-shaped fixing brackets that secure the concealing wooden vertical frame and the visible wooden vertical frame of the wooden composite sash according to an embodiment of the present invention. [Figure 8] This is an end view showing the installation state of an L-shaped fixing bracket that secures the concealing wooden vertical frame and the visible wooden vertical frame of the wooden composite sash according to an embodiment of the present invention. [Figure 9] This is a cross-sectional view showing an enlarged view of the meeting stile portion of the externally sliding window in the embodiment shown in the center of Figure 2. [Figure 10] This is a cross-sectional view showing an enlarged view of the right-hand portion of the interior of the externally sliding window in the embodiment shown on the right side of Figure 2. [Figure 11] This is a vertical cross-sectional view of the exterior movable sash of an outward-moving single-sliding window, which is an example of a wooden composite sash employing a wooden composite sash according to an embodiment of the present invention. [Figure 12]It is a cross-sectional view showing an enlarged upper portion and upper frame portion, etc. of an outdoor movable shutter of an outer movable piece sliding window in the embodiment above FIG. 11. [Figure 13] It is a cross-sectional view showing an enlarged lower portion and lower frame portion, etc. of an outdoor movable shutter of an outer movable piece sliding window in the embodiment below FIG. 11. [Figure 14] It is a longitudinal sectional view of a fixed shutter on the indoor side (FIX window portion) of an outer movable piece sliding window, which is an example of a wooden composite sash adopting a wooden composite shutter in the embodiment according to the present invention. [Figure 15] It is a cross-sectional view showing an enlarged upper portion and upper frame portion, etc. of a fixed shutter on the indoor side (FIX window portion) of an outer movable piece sliding window in the embodiment above FIG. 14. [Figure 16] It is a cross-sectional view showing an enlarged lower portion and lower frame portion, etc. of a fixed shutter on the indoor side (FIX window portion) of an outer movable piece sliding window in the embodiment below FIG. 14.

Mode for Carrying Out the Invention

[0009] Hereinafter, a wooden composite shutter in an embodiment according to the present invention and a wooden composite sash of an outer movable piece sliding window using the wooden composite shutter will be described with reference to the drawings. Note that the wooden composite sash in the embodiment described below is merely an example of the present invention including numerical values such as length, and the present invention is not limited to the embodiment described below, and can be appropriately changed within the scope of the technical idea of the present invention.

[0010] <Structure of Concealed Frame Outer Movable Piece Sliding Window in Embodiment> The outer movable piece sliding window of Embodiment 1 according to the present invention, for example, as shown in FIGS. 1, 2, 11, etc., in a window frame 1 formed by surrounding with an upper frame 11, a lower frame 12, and left and right vertical frames 13, 14, an outdoor movable shutter 2 that runs on an upper portion of a lower frame side shutter rail portion 12a4 (see FIGS. 11, 13, etc.) formed on the outdoor side of a metal lower frame 12a that constitutes the lower frame 12, and a fixed shutter 3 on the indoor side fixed to the window frame 1 are housed and configured.

[0011] <Window Frame 1> The upper frame 11, lower frame 12, and left and right vertical frames 13, 14 that make up the window frame 1 are respectively composed of a metal upper frame 11a formed from aluminum or the like, a metal lower frame 12a, and metal vertical frames 13a, 14a, and a wooden composite upper frame 11b, a wooden composite lower frame 12b, and wooden composite vertical frames 13b, 14b that are detachably combined with the hiding wood and the decorative wood (frame material) and other appearance wood. Incidentally, the vertical frame 13 on the left side of the interior view may be called the left vertical frame, and the vertical frame 14 on the right side of the interior view may be called the right vertical frame. Also, the hiding wood and the appearance wood may each be a single wood (solid wood), a glued laminated timber, or any other wood-based material.

[0012] <Upper frame 11> As described above, the upper frame 11 includes a metal upper frame 11a formed from aluminum or the like and a wooden composite upper frame 11b that is detachably combined with the hiding wood and the appearance wood.

[0013] (Metal upper frame 11a) The metal upper frame 11a is formed in a cross-sectional shape as shown in FIGS. 11, 12, 13, etc. It has an upper frame hollow portion 11a1 that forms the skeleton of the metal upper frame 11a, an upper frame shoji facing portion 11a2 that is integral with the upper frame hollow portion 11a1 and extends more indoors than the upper frame hollow portion 11a1, and an upper frame outer surface portion 11a3, an upper frame side shoji rail portion 11a4, a wooden upper frame connecting piece portion 11a5, etc. that hang downward from the outdoor side to the indoor side of the lower surface of the upper frame shoji facing portion 11a2.

[0014] On the upper side of the upper frame shoji facing portion 11a2, two tapping holes 11a21, 11a22 into which two metal tapping screws 41 penetrating the vertical frames 13, 14 respectively are screwed are provided at two locations as shown in FIGS. 11, 12, 14, 15, etc. On the other hand, a tapping hole 11a51 into which one metal tapping screw 41 penetrating the vertical frames 13, 14 respectively is screwed is also provided in the wooden upper frame connecting piece portion 11a5.

[0015] Furthermore, on the interior side of the lower end of the wooden upper frame connecting piece 11a5, as shown in Figures 11, 12, 14, and 15, there is a concealing wooden upper frame fixing piece 11a52 that fixes the lower side of the concealing wooden upper frame 11b1 of the wooden composite upper frame 11b (described later) with wood tapping screws 42, an engaging piece 11a53 that elastically engages with an engaging fitting 11b3, which is a metal member provided on the visible wooden upper frame 11b2 of the wooden composite upper frame 11b (described later), to detachably attach the visible wooden upper frame 11b2, and an airtight material mounting fitting piece 11a54 on which an airtight material 43 that abuts against the interior side of the wooden upper frame 31b of the exterior movable sash 2 is provided.

[0016] Furthermore, at the indoor end of the upper frame hollow portion 11a1, as shown in Figures 11, 12, 14, and 15, an upper frame indoor-outdoor interface portion 11a6 is formed to rise up, and a concealing wooden upper frame retaining piece 11a7 is provided extending inward from the middle of the upper frame indoor-outdoor interface portion 11a6 to hold down the concealing wooden upper frame 11b1 of the wooden composite upper frame 11b, which will be described later, from above.

[0017] The wooden upper frame retaining piece 11a7 for concealment has an engaging portion 11a71 at its tip that bends downward and fits into the groove 11b11 of the wooden upper frame 11b1 for concealment, as shown in Figures 11, 12, 14, 15, etc.

[0018] (Wooden composite upper frame 11b) As shown in Figures 11, 12, 14, and 15, the wooden composite upper frame 11b consists of a concealing wooden upper frame 11b1 made of concealing wood and a visible wooden upper frame 11b2 made of visible wood that is exposed to the window frame opening and becomes visible.

[0019] The wooden upper frame 11b1 for concealment is provided with a groove 11b11 on its upper side surface into which the engaging portion 11a71 of the wooden upper frame retaining piece 11a7 of the metal upper frame 11a fits, while a wood tapping screw 42 is screwed through the wooden upper frame fixing piece 11a52 of the metal upper frame 11a to fix it to the metal frame 11a.

[0020] The visible wooden upper frame 11b2 has an engaging fitting 11b3 attached to its upper side surface with countersunk screws 42' that elastically engages with the engaged portion 11a53 at the lower end of the wooden upper frame connecting piece 11a5 of the metal upper frame 11a, and is fixed to the concealed wooden upper frame 11b1 with L-shaped fixing fittings 11b4 and wood tapping screws 42.

[0021] The L-shaped fixing bracket 11b4 is a fitting that directly fixes the concealed wooden upper frame 11b1 and the visible wooden upper frame 11b2 to the upper frame 11 using two wood tapping screws 42, as shown in Figures 11 and 12. It is made of a metal member such as aluminum in the shape shown in Figures 4(a) to (d), and has L-shaped fixing pieces 11b41, 11b41, each having two screw holes 11b411 through which the wood tapping screws 42 pass. As shown in Figure 7 which will be described later, the other L-shaped fixing brackets 12b4, 13b4, and 14b4 are constructed in the same way as the L-shaped fixing bracket 11b4 shown in Figures 4(a) to (d).

[0022] Therefore, when remodeling the window frame 1, such as changing the design or performing maintenance, the visible wooden upper frame 11b2 of the wooden composite upper frame 11b can be easily replaced by removing the L-shaped fixing bracket 11b4, which is fixed to the concealed wooden upper frame 11b1 with wood tapping screws 42, and pulling the visible wooden upper frame 11b2 inwards. This disengages the engagement between the engaging bracket 11b3 on the visible wooden upper frame 11b2 and the engaged portion 11a53 at the lower end of the wooden upper frame connecting piece 11a5 of the metal upper frame 11a, allowing the visible wooden upper frame 11b2 to be removed from the concealed wooden upper frame 11b1.

[0023] <Bottom frame 12> The lower frame 12, like the upper frame 11, includes a metal lower frame 12a made of aluminum or the like, and a wooden composite lower frame 12b which is formed by detachably combining a concealing wooden lower frame 12b1 made of concealing wood and a visible wooden lower frame 12b2 made of decorative wood (picture frame material) or the like.

[0024] (Metal lower frame 12a) The metal lower frame 12a is formed in a cross-sectional shape as shown in Figures 11, 13, 14, and 16, and comprises a lower frame hollow portion 12a1 that forms the skeleton of the metal lower frame 12a, a lower frame sash-facing surface portion 12a2 that is integral with the lower frame hollow portion 12a1 and extends further inward than the lower frame hollow portion 12a1, a lower frame outer surface portion 12a3 extending from the outside to the inside of the lower frame sash-facing surface portion 12a2, and a lower frame side sash rail portion 12a4, a wooden lower frame connecting piece portion 12a5, etc. that rise upward.

[0025] The lower frame facing surface 12a2 is provided with two tapping holes 12a21 and 12a22 into which two metal tapping screws 41 that penetrate through the vertical frames 13 and 14 respectively are screwed, while the wooden lower frame connecting piece 12a5 is also provided with a tapping hole 12a51 into which one metal tapping screw 41 that penetrates through the vertical frames 13 and 14 respectively is screwed.

[0026] Furthermore, the wooden lower frame connecting piece 12a5 is provided with, on the interior side of its upper end, a concealing wooden lower frame fixing piece 12a52 which fixes the upper side of the concealing wooden lower frame 12b1 of the wooden composite lower frame 12b (described later) with wood tapping screws 42, as shown in Figures 11, 13, 14, and 16, etc., an engaging piece 12a53 which elastically engages with an engaging fitting 12b3, which is a metal member provided on the visible wooden lower frame 12b2 of the wooden composite lower frame 12b (described later), to detachably attach the visible wooden lower frame 12b2, and an airtight material mounting fitting piece 12a54 which is provided with an airtight material 43 that abuts against the interior side of the wooden upper frame 31b of the exterior movable sash 2.

[0027] Furthermore, at the indoor end of the hollow lower frame portion 12a1, as shown in Figures 11, 13, 14, and 16, the indoor-outdoor interface portion 12a6 of the lower frame is formed to hang down, and a concealing wooden lower frame retaining piece 12a7 is provided from near the boundary between the hollow lower frame portion 12a1 and the indoor-outdoor interface portion 12a6 toward the indoor side, supporting the concealing wooden lower frame 12b1 of the wooden composite lower frame 12b, which will be described later, from below.

[0028] The wooden lower frame retaining piece 12a7 for concealment has an engaging portion 12a71 at its tip that bends upward and fits into the groove 12b11 of the wooden lower frame 12b1 for concealment, as shown in Figures 11, 13, 14, 16, etc.

[0029] (Wooden composite bottom frame 12b) As shown in Figures 11, 13, 14, and 16, the wooden composite bottom frame 12b consists of a concealing wooden bottom frame 12b1 made of concealing wood and a visible wooden bottom frame 12b2 made of visible wood that is exposed to the window frame opening and becomes visible.

[0030] The wooden lower frame 12b1 for concealment has a groove 12b11 on its upper side surface into which the engaging portion 12a71 of the wooden lower frame retaining piece 12a7 of the metal lower frame 12a fits, while a wood tapping screw 42 is screwed through the wooden lower frame fixing piece 12a52 of the metal lower frame 12a to fix it to the metal lower frame 12a.

[0031] The visible wooden lower frame 12b2 has an engaging fitting 12b3 attached to its lower side with countersunk screws 42' that elastically engages with the engaged portion 12a53 at the lower end of the wooden lower frame connecting piece 12a5 of the metal lower frame 12a. The concealed wooden lower frame 12b1 is fixed to it with an L-shaped fixing fitting 12b4 and wood tapping screws 42, which are configured similarly to the L-shaped fixing fitting 11b4 shown in Figures 4(a) to (d).

[0032] Therefore, when remodeling the window frame 1, such as changing the design or performing maintenance, the visible wooden bottom frame 12b2 of the wooden composite bottom frame 12b can be easily replaced by removing the L-shaped fixing bracket 12b4, which is fixed to the concealed wooden bottom frame 12b1 with wood tapping screws 42, and pulling the visible wooden bottom frame 12b2 inwards. This disengages the engagement between the engaging bracket 12b3 on the visible wooden bottom frame 12b2 and the engaged portion 12a53 at the lower end of the wooden bottom frame connecting piece 12a5 of the metal bottom frame 12a, allowing the visible wooden bottom frame 12b2 to be removed from the concealed wooden bottom frame 12b1.

[0033] <Left vertical frame 13> The left vertical frame 13 on the left side of the interior is formed in a cross-sectional shape as shown in Figures 2 and 3, and consists of a combination of a metal vertical frame 13a made of aluminum or the like, and a wooden composite vertical frame 13b which is a combination of concealing wood and decorative wood (picture frame material) for visible surfaces that can be attached and detached.

[0034] (Metal vertical frame 13a) As shown in Figures 2 and 3, the metal vertical frame 13a consists of a vertical frame hollow portion 13a1 which forms the framework of the metal vertical frame 13a, a vertical frame sash facing surface portion 13a2 which is integral with the vertical frame hollow portion 13a1 and faces the outdoor movable sash 2, and is provided with a positioning piece portion 13a21 which fits into a positioning recess 23a1 for the door edge cover of the door edge frame 23 of the outdoor movable sash 2 (described later), and the right vertical frame 14 from the outdoor end of the vertical frame sash facing surface portion 13a2 It has a metal vertical frame outdoor exposed surface portion 13a3 extending in that direction, a left vertical frame fixing piece portion 13a4 extending parallel to the building wall surface (not shown) from the indoor end of the vertical frame hollow portion 13a1 and fixed to structural members such as columns of the building (not shown), and a wooden vertical frame support piece portion 13a5 extending inward from the middle of the left vertical frame fixing piece portion 13a4 and supporting the wooden vertical frame 13b1 for concealment on the left side of the interior view from the outside.

[0035] As shown in Figures 2 and 3, the wooden vertical frame support piece 13a5 for concealment has an engaging portion 13a51 at its tip that bends in the direction of the right vertical frame 14 and fits into the groove 13b11 of the wooden vertical frame 13b1 for concealment.

[0036] Furthermore, the interior end of the vertical frame hollow portion 13a1 has a concealing wooden vertical frame fixing portion 13a6 that extends inward and flush with the vertical frame sash opposing surface portion 13a2 and faces the concealing wooden vertical frame support portion 13a5, as shown in Figures 2 and 3, etc., a visible wooden vertical frame support portion 13a7 that extends to the interior right from the concealing wooden vertical frame fixing portion 13a6 and has a fitting portion 13a71 for attaching an airtight material that abuts against the wooden door frame 23b of the exterior movable sash 2 at its tip, and an engaging fitting 13a8 that extends inward from the interior end of the concealing wooden vertical frame fixing portion 13a6 and elastically engages with an engaging fitting 13b3 provided on the visible wooden vertical frame 13b2 side, allowing the visible wooden vertical frame 13b2 to be attached detachably without being fixed.

[0037] The engaging fitting 13a8 is a fitting that is fixed to the concealing wooden vertical frame 13b1 via a concealing wooden vertical frame fixing piece 13a6 using wood tapping screws 42, as shown in Figure 3, etc. It is made of a metal member such as aluminum in the shape shown in Figures 4(a) to (d), and comprises an engaging fitting body 13a81 through which wood tapping screws 42 pass, and an engaging portion 13a82 that rises from the engaging fitting body 13a81 and is formed in a U shape so that the engaging fitting 13b3, which will be described later, engages with it.

[0038] Here, unlike the engaged portion 11a53 of the upper metal frame 11a and the engaged portion 12a53 of the lower metal frame 12a, the reason why the engaging fitting 13a8 is constructed separately from the metal vertical frame 13a and fixed to the concealing wooden vertical frame 13b1 with wood tapping screws 42 is that, in order to prevent cold air from outside being drawn into the room through the metal vertical frame 13a made of aluminum or the like, the engaging fitting 13a8 is not provided along the entire length of the metal vertical frame 13a, but rather provided as piece material at predetermined intervals along its length.

[0039] (Wooden composite vertical frame 13b) The wooden composite vertical frame 13b on the left side of the interior view, like the wooden composite vertical frame 14b on the right side of the interior view described above, is composed of a combination of a concealing wooden vertical frame 13b1 made of concealing wood and a visible wooden vertical frame 13b2 formed from visible wood such as decorative material (picture frame material).

[0040] As shown in Figures 2 and 3, the wooden vertical frame 13b1 for concealment is provided with a groove 13b11 on its outer surface into which the engaging portion 13a51 of the wooden vertical frame retaining piece 13a5 of the metal vertical frame 13a fits. The wooden vertical frame fixing piece 13a6 of the metal vertical frame 13a is penetrated by a wood tapping screw 42 which is then screwed into the wooden vertical frame fixing piece 13a6 of the metal vertical frame 13a to fix it to the metal vertical frame 13a.

[0041] As shown in Figures 2 and 3, the visible wooden vertical frame 13b2 has a metal engaging fitting 13b3 attached to its outer surface with wood tapping screws 42. This fitting elastically engages with the engaged portion 13a82 (see Figure 5) of the engaging fitting 13a8 provided at the indoor end of the concealing wooden vertical frame fixing piece 13a6 of the metal vertical frame 13a. The concealing wooden vertical frame 13b1 is fixed to the wooden vertical frame 13b1 by an L-shaped fixing fitting 13b4 and wood tapping screws 42, which are configured similarly to the L-shaped fixing fittings 11b4 and 12b4 shown in Figures 4(a) to (d).

[0042] Therefore, when remodeling the window frame 1, such as changing the design or performing maintenance, the wooden composite vertical frame 13b on the left side of the interior can be easily replaced by removing the L-shaped fixing bracket 13b4 that secures the concealing wooden vertical frame 13b1 and the visible wooden vertical frame 13b2 with wood tapping screws 42. This creates a connected state where the engaging bracket 13b3 on the visible wooden vertical frame 13b2 is detachably engaged with the engaging bracket 13a8 on the metal vertical frame 13a. As a result, the visible wooden vertical frame 13b2 can be pulled out from the concealing wooden vertical frame 13b1 toward the interior and removed.

[0043] The engaging fitting 13b3 is a fitting that is fixed to the visible wooden vertical frame 13b2 by tapping screws 42 for wood, as shown in Figures 2 and 3, and is made of a metal member such as aluminum in the shape shown in Figures 6(a) to (d). It comprises an engaging fitting body 13b31 with two screw holes 13b311 through which the tapping screws 42 for wood pass, and an engaging part 13b32 that is set down one step from the engaging fitting body 13b31 and has a roughly triangular V-shaped engaging projection 13b321 that engages with the engaged part 13a82 of the engaged fitting 13a8 shown in Figure 5.

[0044] <Right vertical frame 14> The right vertical frame 14 on the right side of the interior view is formed in the cross-sectional shape shown in Figures 2 and 10, and is composed of a combination of a metal vertical frame 14a made of aluminum or the like, and a wooden composite vertical frame 14b which is a combination of concealing wood and decorative wood (frame material) for visible surfaces that can be attached and detached. Since this wooden composite sash is an outward-opening single-sliding window, an interior-side fixed sash 3 is fixed to the right vertical frame 14.

[0045] (Metal vertical frame 14a) As shown in Figures 2 and 10, the metal vertical frame 14a has a vertical frame hollow portion 14a1 that forms the framework of the metal vertical frame 14a, a vertical frame sash-facing surface portion 14a2 that is integrated with the vertical frame hollow portion 14a1, a metal vertical frame outdoor exposed surface portion 14a3 that extends from the outdoor end of the vertical frame sash-facing surface portion 14a2 toward the left vertical frame 13, a vertical frame fixing piece portion 14a4 that extends from the indoor end of the vertical frame hollow portion 14a1 parallel to the building wall (not shown) and is fixed to a pillar or the like of the building (not shown), and a wooden vertical frame support piece portion 14a5 that extends inward from the middle of the vertical frame fixing piece portion 14a4 and supports the wooden vertical frame 14b1 for concealment on the right side of the interior view from the outside.

[0046] As shown in Figures 2 and 10, the wooden vertical frame support piece 14a5 for concealment has an engaging portion 14a51 at its tip that bends toward the left vertical frame 13 and fits into the groove 14b11 of the wooden vertical frame 14b1 for concealment.

[0047] Furthermore, the outdoor end of the vertical frame hollow portion 14a1 has, as shown in Figures 2 and 10, a wooden vertical frame fixing piece 14a6 that extends inward and is flush with the vertical frame sash opposing surface portion 14a2 and faces the wooden vertical frame support piece 14a5 for concealment, a metal vertical frame outdoor exposed surface portion 14a7 that extends to the left side of the interior view from the wooden vertical frame fixing piece portion 14a6 and has a groove portion 14a71 for attaching a trim material that fits into the tip, into which the locking portion 44a of the trim material 44 that presses down the double-glazed glass portion 35 of the indoor fixed sash 3 is fitted, and a wooden vertical frame fixing piece 14a8 that extends inward from the indoor end of the metal vertical frame outdoor exposed surface portion 14a7 and fixes the visible wooden vertical frame 14b2 with wood tapping screws 42 via a large resin spacer 46.

[0048] (Wooden composite vertical frame 14b) As shown in Figures 2 and 10, the wooden composite vertical frame 14b is composed of a combination of a concealing wooden vertical frame 14b1, which is made by combining concealing wood and visible wood such as decorative material (picture frame material), and a visible wooden vertical frame 14b2, which is made from visible wood such as decorative material (picture frame material).

[0049] As shown in Figures 2 and 10, the wooden vertical frame 14b1 for concealment is provided with a groove 14b11 on its outer surface into which the engaging portion 14a51 of the wooden vertical frame retaining piece 14a5 of the metal vertical frame 14a fits. The wooden vertical frame fixing piece 14a6 of the metal vertical frame 34a is penetrated by a wood tapping screw 42 which is then screwed into the wooden vertical frame fixing piece 14a6 of the metal vertical frame 34a to fix it to the metal vertical frame 14a.

[0050] As shown in Figures 2 and 10, the visible wooden vertical frame 14b2 is fixed to the outer surface of the visible wooden vertical frame fixing piece 14a8 of the metal vertical frame 14a with wood tapping screws 42 via a large resin spacer 46, while the concealed wooden vertical frame 14b1 is fixed to the visible wooden vertical frame 14b4 with L-shaped fixing brackets 14b4 and wood tapping screws 42, which are configured in the same way as the L-shaped fixing brackets 11b4, L-shaped fixing brackets 12b4 and L-shaped fixing brackets 13b4 shown in Figures 4(a) to (d).

[0051] In this embodiment 1, the wooden composite sash is an outward-moving single-sliding window, and the interior fixed sash 3 is fixed to the window frame 1. Therefore, there is no vertical frame on the interior right side of the interior fixed sash 3. The interior right side of the double-glazed glass portion 25 is directly fixed to the visible wooden vertical frame 14b2 of the right vertical frame 14 with wood tapping screws 42 or the like, and the visible wooden vertical frame 14b2 of the vertical frame 14 also functions as the interior right side vertical frame of the interior fixed sash 3.

[0052] Therefore, unlike the wooden composite vertical frame 13b on the left side of the interior view, when the window frame 1 is redesigned or maintained, if the L-shaped fixing bracket 14b4 that secures the concealing wooden vertical frame 14b1 and the visible wooden vertical frame 14b2 with wood tapping screws 42 is removed, the visible wooden vertical frame 14b2 cannot be removed on its own. Instead, the visible wooden vertical frame 14b2 can be removed together with the interior-side fixed sash 3 by pulling it outwards from the concealing wooden vertical frame 14b1 towards the interior.

[0053] As explained above, the L-shaped fixing brackets 11b4 that secure the concealing wooden lower frame 12b1 and the visible wooden lower frame 12b2 that constitute the lower frame 12 with wood tapping screws 42, the L-shaped fixing brackets 14b4 that secure the concealing wooden vertical frame 14b1 and the visible wooden vertical frame 14b2 that constitute the right vertical frame 14 with wood tapping screws 42, and the L-shaped fixing brackets 14b4 that secure the concealing wooden vertical frame 14b1 and the visible wooden vertical frame 14b2 with wood tapping screws 42 that constitute the right vertical frame 14 are configured in the same way as the L-shaped fixing brackets 11b4 shown in Figures 4(a) to (d) that secure the concealing wooden upper frame 11b1 and the visible wooden upper frame 11b2 that constitute the upper frame 11 with wood tapping screws 42, and the window frame 1 is configured as shown in Figure 7 and As shown in Figure 8, the wooden frames for concealment and the wooden frames for concealment are fixed together with tapping screws 42 for wood. Therefore, when remodeling the window frame 1, such as changing the design or performing maintenance, these L-shaped fixing brackets 11b4, 12b4, 13b4, 14b4, etc. can be removed, making it possible to remove and replace only the structural parts such as the upper wooden frame for concealment 11b2, the lower wooden frame for concealment 12b2, and the vertical wooden frame for concealment 13b2, which are exposed to the window frame opening and prone to deterioration over time due to contact with people or objects or ultraviolet rays entering from the window frame opening, from the upper wooden frame for concealment 11b1, the lower wooden frame for concealment 12b1, and the vertical wooden frame for concealment 13b1. This eliminates the need to replace the entire window frame 1.

[0054] <Outdoor movable sliding door 2> As shown in Figures 1 and 2, the exterior movable sash 2 is constructed by providing a double-glazed section 35 with three panes of glass spaced at predetermined intervals in an opening surrounded by an upper frame 21, a lower frame 22, a door edge frame 23, and a meeting stile 24. It is configured to run on the lower frame side sash rail section 12a4 formed on the lower frame 12 by a roller 22c provided on the lower frame 22.

[0055] The upper frame 21, lower frame 22, door edge frame 23, and meeting frame 24 are each composed of a wooden upper frame 21b, wooden lower frame 22b, wooden door edge frame 23b, and wooden meeting frame 24b made of decorative wood (frame material) or the like, and a metal upper frame cover 21a, metal lower frame cover 22a, metal door edge frame cover 23a, and metal meeting frame cover 24a, etc., made of aluminum or the like, which are provided on their surface sides.

[0056] (Metal upper frame cover 21a) The metal upper frame cover 21a has a cross-sectional shape as shown in Figures 11, 12, 14, and 15, and includes a metal upper hollow section 21a1 into which a metal tapping screw 41 that penetrates the metal door frame cover 23a and the metal meeting frame cover 24a is screwed in, and a metal upper hollow section 21a1 into which the upper frame side sash rail section 11a4 of the metal upper frame 11a is housed, and is movable on the exterior side. The structure includes a U-shaped groove 21a2 for guiding the sliding motion of the shoji screen 2, an L-shaped wooden upper frame fixing piece 21a3 that hangs down from the metal upper hollow part 21a1 and bends inward to fix the wooden upper frame 21b with wooden tapping screws 42, and a groove 21a4 for attaching a trim material that extends outward from the lower end of the wooden upper frame fixing piece 21a3 and into which the locking part 44a of the trim material 44 that holds down the double-glazed glass part 25 fits.

[0057] Here, the wooden upper frame fixing piece 21a3 of the metal upper frame cover 21a has, for example, five screw holes through which wood tapping screws 42 that fix the wooden upper frame 21b are inserted in the longitudinal direction. Of the five screw holes, only the central screw hole is a round hole with an inner diameter approximately the same as the outer diameter of the wood tapping screw 42, while the other four screw holes are elongated holes in the longitudinal direction of the wooden upper frame fixing piece 21a3, so-called loose holes (oversized holes). The metal upper frame cover 21a is designed to release thermal expansion in the longitudinal direction at both ends. The cover is fixed to the wooden upper frame 21b with wood tapping screws 42 via large rubber spacers 48 made of elastomer or other rubber at both ends, and the three screw holes sandwiched between the screw holes at both ends are fixed to the wooden upper frame 21b with wood tapping screws 42 via large resin spacers 46 made of synthetic resin, which are harder than the large rubber spacers 48.

[0058] As shown in Figures 11 and 12, the groove portion 21a4 for mounting the trim material comprises an exterior side portion 21a41 for holding down the trim material and an interior side portion 21a42 for holding down the trim material, into which the locking portion 44a of the trim material 44 fits.

[0059] (Wooden upper stile 21b) The wooden upper frame 21b is formed in the cross-sectional shape shown in Figures 11 and 12, and is a wooden frame that extends in the visible direction, similar to the metal upper frame cover 21a. Since it is visible from the interior, it is made of decorative wood such as picture frame material. It is configured to have a wooden upper frame side fixing part 21b1 that is fixed to the metal upper frame cover 21a by wood tapping screws 42 that are screwed in from the wooden upper frame fixing piece 21a3 of the metal upper frame cover 21a via large resin spacers 46 or large rubber spacers 48, and a double-glazed glass receiving part 21b2 that extends inward from the wooden upper frame side fixing part 21b1, hangs down, and faces the trim material 44 attached to the trim material mounting groove 21a4 of the metal upper frame cover 21a, and receives the interior side of the upper part of the double-glazed glass section 25 via an airtight material 43.

[0060] (Metal lower frame cover 22a) The metal lower frame cover 22a is formed in a cross-sectional shape as shown in Figures 11 and 13, and is a metal member that extends in the visible direction, similar to the metal upper frame cover 21a, etc. It has a vertical surface and an outdoor exposed surface portion 22a1 of the lower frame cover that is exposed to the outdoors, and extending downward from above the outdoor exposed surface portion 22a1 at predetermined intervals, it has a protruding piece portion 22a2 for fitting a trim, an upper protruding piece portion 22a3 for attaching a wooden lower frame, and a lower protruding piece portion 22a4 for attaching a wooden lower frame.

[0061] The molding fitting projection 22a2 is a projection provided on the upper part of the indoor side of the outdoor exposed surface portion 22a1 of the lower frame cover, as shown in Figures 11 and 13, etc. It is formed to extend horizontally in the visible direction, similar to the metal upper frame cover 21a, etc., and is formed so as to engage with the locking portion 44a of the molding material 44 that presses down on the lower part of the double-glazed glass portion 25.

[0062] The upper projection 22a3 for mounting the wooden bottom frame is a projection located below the projection 22a2 for fitting the trim on the indoor side of the outdoor exposed surface 22a1 of the bottom frame cover, as shown in Figures 11 and 13, and has one tapping hole 22a31 into which a metal tapping screw 41 that penetrates the metal door frame cover 23a and the metal meeting frame cover 24a is screwed.

[0063] Furthermore, the wooden lower frame fixing piece 22a3 of the metal lower frame cover 22a has, for example, five screw holes through which wood tapping screws 42 that fix the wooden lower frame 22b are inserted in the longitudinal direction. Similar to the wooden upper frame fixing piece 21a3 of the metal upper frame cover 21a, of the five screw holes, only the central screw hole is a round hole with an inner diameter approximately the same as the outer diameter of the wood tapping screw 42, while the other four screw holes are elongated holes that run along the longitudinal direction of the wooden lower frame fixing piece 22a3. The metal bottom frame cover 22a is designed with so-called loose holes (oversized holes) to allow thermal expansion in the longitudinal direction to escape at both ends. Small rubber spacers 49 made of elastomer or other rubber are used to secure it to the wooden bottom frame 22b with wood tapping screws 42. Three screw holes sandwiched between the screw holes at both ends are used to secure it to the wooden bottom frame 22b with wood tapping screws 42 via small resin spacers 47 made of synthetic resin, which are harder than the small rubber spacers 49.

[0064] Furthermore, at least both ends of the upper projection portion 22a3 for attaching the wooden lower frame, that is, the ends on the metal door frame cover 23a and the metal meeting frame cover 24a side, are provided with drainage slits 22a33, which are approximately rectangular in shape when viewed from above, to allow rainwater, condensation, etc., to drain downwards.

[0065] The lower projection 22a4 for mounting the wooden frame is a projection provided below the wooden frame fixing piece 22a3 on the indoor side of the outdoor exposed surface 22a1 of the frame cover, as shown in Figures 11 and 13. It is a roughly L-shaped, hook-shaped projection with a raised tip, and includes a wooden frame lower support piece 22a41 into which the lower fitting part of the wooden frame 22b fits and supports, and a connecting piece 22a42 that connects the outdoor exposed surface 22a1 of the frame cover and the wooden frame lower support piece 22a41 at a predetermined distance.

[0066] Furthermore, the lower support portion 22a41 of the wooden lower frame and the connecting piece portion 22a42 are provided with drainage slits 22a41a and 22a42a, respectively, which are roughly rectangular in plan view and serve as drainage holes to direct rainwater, condensation, etc. downward, similar to the drainage slits 22a33 of the upper projection portion 22a3 for mounting the wooden lower frame.

[0067] (Wooden lower frame 22b) The wooden lower frame 22b is formed from wood that extends in the visible direction, similar to the wooden upper frame 21b described above, and is made from decorative wood (frame material) or other visible wood. As shown in Figures 11 and 13, the upper exterior side is formed to have a wooden lower frame side fixing part 22b1 into which wood tapping screws 42 that penetrate five screw holes in the wooden lower frame fixing piece 22a3 of the metal lower frame cover 22a are screwed in via small resin spacers 47 and small rubber spacers 49, and a double-glazed glass receiving part 22b2 that extends diagonally upward toward the interior from the wooden lower frame side fixing part 22b1, then protrudes upward and faces the trim material 44 provided on the trim fitting projection 22a2 of the metal lower frame cover 22a, and receives the interior side of the lower part of the double-glazed glass section 25 via an airtight material 43.

[0068] Furthermore, the lower exterior side of the wooden bottom frame 22b is provided with a metal bottom frame cover fitting portion 22b3 that fits into the wooden bottom frame lower support portion 22a41 of the metal bottom frame cover 22a, and a roller housing portion 22b4 that houses the roller 22c on the interior side of the metal bottom frame cover fitting portion 22b3.

[0069] (Metal door frame cover 23a) As shown in Figures 2 and 3, the metal door frame cover 23a is provided with a U-shaped recess 23a1 into which the positioning piece 13a1 of the metal vertical frame 13a on the left side of the interior view is inserted, and an outdoor exposed surface portion 23a2 provided on the outdoor side of the door frame cover positioning recess 23a1 with a predetermined width in the visible direction.

[0070] Furthermore, the metal door frame cover 23a is provided with a groove 23a3 for attaching a trim material, which is continuous with the outdoor exposed surface portion 23a2 and faces the recess 23a1 for positioning the door frame cover, and opens toward the double-glazed glass portion 2 in the opposite direction, into which the locking portion 44a of the trim material 44 that holds down the left side of the interior view of the double-glazed glass portion 25 fits; and a door frame cover side fixing piece 23a4, which is located on the interior side of the groove 23a3 for attaching the trim material, and which is used to fix the left side of the interior view of the wooden door frame 23b and the metal bottom frame cover 22a.

[0071] As shown in Figures 2 and 3, the groove portion 23a3 for mounting the trim material comprises an outer side portion 23a31 for holding down the trim material and an inner side portion 23a32 for holding down the trim material, into which the locking portion 44a of the trim material 44 fits.

[0072] The wooden door frame fixing piece 23a4 has, for example, five screw holes through which wood tapping screws 42 that fix the wooden door frame 23b are inserted in the longitudinal direction. Similar to the wooden upper frame fixing piece 21a3 of the metal upper frame cover 21a, of the five screw holes, only the central screw hole is a round hole with an inner diameter approximately the same as the outer diameter of the wood tapping screw 42, while the other four screw holes are elongated holes in the longitudinal direction of the wooden door frame fixing piece 23a4. The metal door frame cover 23a is designed with gap holes (excess holes) to release thermal expansion in the longitudinal direction at both ends. The screw holes at both ends are fixed to the wooden door frame 23b with wood tapping screws 42 via large rubber spacers 48 made of rubber such as elastomer, and the three screw holes sandwiched between the screw holes at both ends are fixed to the wooden door frame 23b with wood tapping screws 42 via large resin spacers 46 made of synthetic resin which are harder than the large rubber spacers 48.

[0073] (Wooden door frame 23b) The wooden door frame 23b is formed from decorative wood such as a frame material having a cross-sectional structure as shown in Figures 2 and 3, and has a door frame cover side fixing piece 23b1 on the exterior side facing the double-glazed glass section 25, into which wood tapping screws 42 that penetrate the wooden door frame fixing piece 23a4 of the metal door frame cover 23a are screwed via large resin spacers 46 and large rubber spacers 48, and a double-glazed glass receiving piece 23b2 that extends inward from the door frame cover side fixing piece 23b1, protrudes toward the meeting stile 24 and faces the trim material 44 provided in the trim material mounting groove 23a3 of the metal door frame cover 23a, and receives the interior left end of the double-glazed glass section 25 via an airtight material 43.

[0074] Furthermore, on the interior side of the wooden door frame 23b, opposite to the double-glazed glass receiving portion 23b2, that is, on the vertical frame 13 side, a door frame cover concealing projection 23b3 is provided, which protrudes to the tip of the door frame cover positioning recess 23a1 of the metal door frame cover 23a so that the door frame cover positioning recess 23a1 of the metal door frame cover 23a is hidden from the interior view.

[0075] (Metal meeting stile cover 24a) As shown in Figures 2 and 3, the metal meeting stile cover 24a has an outdoor exposed surface portion 24a1 on the exterior side parallel to the glass surface and with a predetermined width in the facing direction, and a vertical frame opposing surface portion 24a2 on the interior side of the metal vertical frame 14a on the right side of the outdoor exposed surface portion 24a1 that extends inward toward the interior and faces the exterior movable sash contact surface portion 14a of the metal vertical frame 14a.

[0076] Furthermore, on the side of the double-glazed glass section 25 that is the left side of the exterior exposed surface 24a1 of the meeting stile cover, there is a groove 24a3 for attaching a glazing material into which the locking portion 44a of the glazing material 44 that holds down the right side of the interior view of the double-glazed glass section 25 fits, and a fixing piece 24a4 on the meeting stile cover side that is located on the interior side of the groove 24a3 for attaching a glazing material, and the interior right end of the wooden meeting stile 24b and the metal lower stile cover 22a are fixed.

[0077] The groove portion 24a3 for attaching the trim material comprises an exterior side portion 24a31 for holding down the trim material, into which the locking portion 44a of the trim material 44 fits, and an interior side portion 24a32 for holding down the trim material.

[0078] The wooden door frame fixing piece 24a4 has, for example, five screw holes through which wood tapping screws 42 that fix the wooden door frame 24b are inserted in the longitudinal direction. Similar to the wooden door frame fixing piece 23a4 of the metal door frame cover 23a, of the five screw holes, only the central screw hole is a round hole with an inner diameter approximately the same as the outer diameter of the wood tapping screw 42, while the other four screw holes are elongated in the longitudinal direction of the wooden door frame fixing piece 24a4. The metal stile cover 24a is designed with loose holes (oversized holes) to allow thermal expansion in the longitudinal direction to escape at both ends. The screw holes at both ends are fixed to the wooden stile 24b with wood tapping screws 42 via large rubber spacers 48 made of elastomer or other rubber. The three screw holes sandwiched between the screw holes at both ends are fixed to the wooden stile 24b with wood tapping screws 42 via large resin spacers 46 made of synthetic resin, which are harder than the large rubber spacers 48. Yes, they are.

[0079] (Wooden frame 24b) The wooden meeting stile 24b is formed from decorative wood such as picture frame material having a cross-sectional structure as shown in Figures 2 and 9, and has a wooden meeting stile side fixing part 24b1 into which wood tapping screws 42 that pass through a large resin spacer 46 or a large rubber spacer 48 are screwed into five screw holes in the wooden meeting stile fixing piece 24a4 of the metal meeting stile cover 24a, and a double-glazed glass receiving part 24b2 that extends inward from the wooden meeting stile side fixing part 24b1, protrudes toward the door frame 23 and faces the trim material 44 provided in the trim material mounting groove 24a3 of the metal meeting stile cover 24a, and receives the right side of the interior view of the double-glazed glass part 25 via an airtight material 43.

[0080] Furthermore, on the interior side of the wooden meeting stile 24b, opposite to the double-glazed glass receiving portion 24b2, that is, on the right vertical frame 14 side, as shown in Figures 2 and 9, a smoke deflector piece 24a5 made of aluminum or other metal, which forms the smoke deflector for the metal meeting stile cover 24a, is fixed with wood tapping screws 42.

[0081] <Indoor-side fixed shoji screen 3> The interior fixed shoji screen 3 is a shoji screen fixed to the vertical frame 13 on the right side of the interior view, as shown in Figures 1 and 2, etc. It is constructed by providing a double-glazed section 35 with three panes of glass spaced at predetermined intervals in an opening surrounded by the upper frame 31, lower frame 32, meeting stile (meeting stile) 33 and the vertical frame 13 on the right side of the interior view. The upper frame 31 and lower frame 32 are fixed to the upper frame 11, lower frame 12, and right vertical frame 14 that constitute the window frame 1 of the outward sliding window using various tapping screws such as metal tapping screws 41 and wood tapping screws 42.

[0082] Furthermore, the wooden composite sash in this embodiment 1 is an outward-moving single-sliding window, and the interior fixed sash 3 is fixed to the window frame 1. Therefore, there is no vertical frame on the interior right side of the interior fixed sash 3, and the interior right side of its double-glazed glass portion 35 is attached to the visible wooden vertical frame 14b2 of the right vertical frame 14. In other words, the visible wooden vertical frame 14b2 of the vertical frame 14 also functions as the interior right side vertical frame of the interior fixed sash 3.

[0083] The upper frame 31 and lower frame 32 are composed of a metal upper frame cover 31a and a metal lower frame cover 32a made of aluminum or the like, and a wooden upper frame 31b and wooden lower frame 32b made of decorative wood (picture frame material), as shown in Figures 14 to 16.

[0084] The metal upper frame cover 31a has a cross-sectional shape as shown in Figures 14 and 15, and as described above, the interior fixed sash 3 is fixed to the window frame 1, so it is composed of two divided members: a metal divided outer hollow forming part 31a1 and a metal divided inner hollow forming part 31a2.

[0085] As shown in Figures 14 and 15, the inner side of the metal split outer hollow forming portion 31a1 has a tapping hole 31a11 into which a metal tapping screw 41 that penetrates the metal meeting stile vertical frame cover 33a is screwed, and a wooden upper frame fixing piece 31a12 is provided for fixing the wooden upper frame 31b with a wood tapping screw 42.

[0086] Here, the wooden upper frame fixing piece 31a12 of the metal upper frame cover 31a of the indoor fixed sash 3 also has, similar to the wooden upper frame fixing piece 21a3 of the metal upper frame cover 21a of the outdoor movable sash 2, for example, five screw holes through which wood tapping screws 42 that fix the wooden upper frame 31b are provided in the longitudinal direction. Of the five screw holes, only the central screw hole is a round hole with an inner diameter approximately the same as the outer diameter of the wood tapping screw 42, while the other four screw holes are for the wooden upper frame fixing piece 31a12. The metal upper frame cover 31a is configured to release thermal expansion in the longitudinal direction at both ends by using elongated holes (so-called loose holes) that are long in the longitudinal direction. The screw holes at both ends are fixed to the wooden upper frame 31b with wood tapping screws 42 via small rubber spacers 49 made of rubber such as elastomer, and the three screw holes sandwiched between the screw holes at both ends are fixed to the wooden upper frame 31b with wood tapping screws 42 via small resin spacers 47 made of synthetic resin which are harder than the small rubber spacers 49.

[0087] Furthermore, as shown in Figures 14 and 15, on the front of the inner side of the metal divided outer hollow forming portion 31a1, an engaging portion 31a13 is provided at the top that engages with the engaged portion 31a22 of the metal divided inner hollow forming portion 31a2, and a groove portion 31a14 for attaching the trim material is provided at the bottom into which the locking portion 44a of the trim material 44 fits.

[0088] On the other hand, as shown in Figures 14 and 15, the inner hollow forming portion 31a2 of the metal division is provided with a metal upper frame fixing piece 31a21 which is fixed from above to the metal upper frame fixing piece 11a55 of the metal upper frame 11a by countersunk screws 42', an engaged portion 31a22 which engages with the engaging portion 31a13 of the outer hollow forming portion 31a1 of the metal division, and a wooden upper frame outer surface contact piece 31a23 which contacts the outer surface of the wooden upper frame 31b.

[0089] The wooden upper frame 31b is formed from decorative wood (frame material) and, like the wooden upper frame 21b of the exterior movable shoji screen 2 (see Figures 11 and 14, etc.), has a wooden upper frame side fixing part 31b1 and a double-glazed glass receiving part 31b2. However, unlike the wooden upper frame 21b of the exterior movable shoji screen 2, the wooden upper frame 31b is fixed to the concealing wooden upper frame 11b1 and the visible wooden upper frame 11b2 that constitute the upper frame 11b by tapping screws 42 for wood, as shown in Figures 11 and 14, etc.

[0090] The metal lower frame cover 32a has a cross-sectional shape as shown in Figures 14 and 16, and as described above, the interior fixed sash 3 is fixed to the window frame 1, so it is composed of two divided members, a metal divided outer hollow forming portion 32a1 and a metal divided inner hollow forming portion 32a2, similar to the metal upper frame cover 31a.

[0091] As shown in Figures 14 and 16, the inner side of the metal split outer hollow forming portion 32a1 has a tapping hole 31a11 into which a metal tapping screw 41 that penetrates the metal meeting stile frame cover 33a is screwed, and a wooden lower frame fixing piece 32a12 is provided for fixing the wooden lower frame 32b with a wood tapping screw 42.

[0092] Here, the wooden bottom frame fixing piece 32a12 of the metal bottom frame cover 32a of the indoor fixed sash 3 also has, similar to the wooden bottom frame fixing piece 22a3 of the metal bottom frame cover 22a of the outdoor movable sash 2, for example, five screw holes through which tapping screws 42 for wood to fix the wooden bottom frame 32b are provided in the longitudinal direction. Of the five screw holes, only the central screw hole is a round hole with an inner diameter approximately the same as the outer diameter of the tapping screw 42 for wood, while the other four screw holes are for the wooden bottom frame fixing piece 32a12. The metal lower frame cover 32a is designed with elongated holes in the longitudinal direction, so-called loose holes (oversized holes), to release thermal expansion in the longitudinal direction at both ends. The screw holes at both ends are fixed to the wooden lower frame 32b with wood tapping screws 42 via small rubber spacers 49 made of rubber such as elastomer, and the three screw holes sandwiched between the screw holes at both ends are fixed to the wooden lower frame 32b with wood tapping screws 42 via small resin spacers 47 made of synthetic resin, which are harder than the small rubber spacers 49.

[0093] Furthermore, as shown in Figures 14 and 16, the front of the inner side of the metal split outer hollow forming portion 32a1 is provided with an engaging portion 32a13 at the bottom that engages with the engaged portion 32a22 of the metal split inner hollow forming portion 32a2, and a groove portion 32a14 for mounting the trim material into which the locking portion 44a of the trim material 44 fits at the top, and drainage slits are provided in the engaging portion 32a13 and the groove portion 32a14 for mounting the trim material, respectively.

[0094] On the other hand, the inner hollow forming portion 32a2 of the metal division is provided with a metal lower frame fixing piece 32a21 which is fixed from below to the metal lower frame fixing piece 12a55 of the metal lower frame 12a by countersunk screws 42', as shown in Figures 14 and 16, etc., an engaged portion 32a22 which engages with the engaging portion 32a13 of the outer hollow forming portion 32a1 of the metal division, and a wooden lower frame outer surface contact piece 32a23 which abuts against the outer surface of the wooden lower frame 32b.

[0095] The wooden bottom frame 32b is formed from decorative wood such as picture frame material, and, like the wooden bottom frame 22b of the outdoor movable shoji screen 2 (see Figures 11 and 14, etc.), it has a wooden bottom frame side fixing part 32b1 and a double-glazed glass receiving part 32b2. However, unlike the wooden bottom frame 22b of the outdoor movable shoji screen 2, the wooden bottom frame 32b is fixed to the concealing wooden bottom frame 12b1 and the visible wooden bottom frame 1b2 that constitute the bottom frame 12b by tapping screws 42 for wood, as shown in Figures 14 and 16, etc.

[0096] Furthermore, as shown in Figures 2 and 9, the meeting stile 33 is composed of a metal meeting stile frame cover 33a made of aluminum or the like, and a wooden meeting stile 33b made of decorative wood (frame material) or the like.

[0097] As shown in Figures 2 and 9, the metal meeting stile frame cover 33a is provided on the outdoor side of the movable sash 2 and has a smoke-return piece 33a1 that overlaps with the smoke-return piece 24a5 of the metal meeting stile frame cover 24a of the meeting stile 24 when the outdoor side of the movable sash 2 is closed, and a wooden meeting stile fixing piece 33a2 that bends 90 degrees from the smoke-return piece 33a1 and extends inward to fix the wooden meeting stile frame 33b with wood tapping screws 42. The wooden meeting stile fixing piece 33a2 is provided with a groove 33a3 for attaching a trim material into which the locking portion 44a of the trim material 44 fits, and is also provided with a fitting portion 33a4 for attaching an airtight material that abuts against the back side (indoor side) of the outdoor side of the movable sash 2.

[0098] Here, the wooden meeting stile fixing piece 33a2 of the metal meeting stile frame cover 33a of the indoor fixed shoji screen 3 also has, similar to the wooden lower frame fixing piece 32a12 of the metal lower frame cover 32a of the indoor fixed shoji screen 3, for example, five screw holes are provided in the longitudinal direction through which wood tapping screws 42 that fix the wooden meeting stile frame 33b pass. Of the five screw holes, only the central screw hole is a round hole with an inner diameter approximately the same as the outer diameter of the wood tapping screw 42, while the other four screw holes are for the wooden meeting stile fixing piece 33 The metal meeting stile frame cover 33a is designed to release thermal expansion in the longitudinal direction at both ends, with elongated holes (so-called loose holes) in the longitudinal direction of a2. Small rubber spacers 49 made of elastomer or other rubber are used to secure the wooden meeting stile frame cover 33b to the wooden meeting stile frame cover 33a. Three screw holes sandwiched between the screw holes at both ends are used to secure the wooden meeting stile frame cover 33b to the wooden meeting stile frame cover 33a to the wooden meeting stile frame cover 33a via small resin spacers 47 made of synthetic resin, which are harder than the small rubber spacers 49, and are also used with wood tapping screws 42.

[0099] As shown in Figures 2 and 9, the wooden meeting stile 33b has a wooden meeting stile side fixing part 33b1 which is fixed to the meeting stile fixing piece 33a2 of the metal meeting stile stile frame cover 33a, and a double-glazed glass receiving part 33b2 which receives the left side of the interior view of the double-glazed glass part 35 via an airtight material 43.

[0100] (Metal tapping screws 41 and wood tapping screws 42) The metal tapping screws 41 are used to fasten metal upper frames 11a and lower frames 12a to metal vertical frames 13a, 14a, and other metal profiles. The wood tapping screws 42 are used to fasten metal members to wood, or to wood members to wood.

[0101] (Airtight material 43) The airtight seal 43 is a well-known component made of a soft synthetic resin such as rubber, and is attached to the fitting portion 11a54 for attaching the airtight seal on the upper metal frame 11a and the fitting portion 12a54 for attaching the airtight seal on the lower metal frame 12a, etc., as shown in Figures 11 to 13, to ensure airtightness with the movable sash 2 on the outside.

[0102] (Folding material 44) The trim material 44 is a member that holds down the double-glazed glass section 25 and the double-glazed glass section 35 on the exterior movable sash 2 and the interior fixed sash 3, respectively, and is formed from a metal profile such as aluminum, similar to the various metal frame covers such as the metal upper frame cover 21a, the metal door edge frame cover 23a, and the metal meeting stile vertical frame cover 33a.

[0103] As described above, the upper frame 11, lower frame 12, and left vertical frame 13 that constitute the window frame 1 of the externally sliding window of this embodiment each comprise an upper wooden frame 11b2, a lower wooden frame 12b2, and a vertical wooden frame 13b2 that are visible wooden window frames exposed to the window frame opening, and a lower wooden frame 12b1, a lower wooden frame 12b1, and a vertical wooden frame 13b1 that are concealed wooden window frames made of a different type of wood from the visible wooden window frames, which are hardly exposed to the window frame opening and are detachably attached to the visible wooden window frames. The upper wooden frame 11b1, the lower wooden frame 12b1, and the vertical wooden frame 13b1 are configured to be fixed to the corresponding metal upper frame 11a, the lower metal frame 12a, and the vertical wooden frame 13a with wood tapping screws 42.

[0104] Therefore, although the wooden upper frame 11b1, wooden lower frame 12b1, and wooden vertical frame 13b1 for concealment are fixed to the corresponding metal upper frame 11a, metal lower frame 12a, and metal vertical frame 13a with wood tapping screws 42, they are detachable from the visible wooden upper frame 11b2, visible wooden lower frame 12b2, and visible wooden vertical frame 13b2 respectively. This eliminates the need to replace the entire window frame 1 when redesigning or maintaining the window frame 1, and prevents it from being exposed in the window frame opening and being hit by people or objects. This allows for the removal and replacement of only the visible wooden upper frame 11b2, visible wooden lower frame 12b2, and visible wooden vertical frame 13b2, which are prone to deterioration over time due to ultraviolet rays and other factors entering through the window frame opening, from the concealed wooden upper frame 11b1, concealed wooden lower frame 12b1, and concealed wooden vertical frame 13b1. As a result, only the visible portion of the window frame can be replaced at a low cost.

[0105] Furthermore, in this embodiment, the window frame 1 is the window frame for an outward-moving sliding window. Unlike the wooden composite vertical frame 13b on the left side of the interior view, the wooden composite vertical frame 14bb on the right side of the interior view, which is on the side of the fixed sash 3, cannot be removed by itself. Instead, the wooden composite vertical frame 14b2 is removed together with the fixed sash 3 on the interior side by pulling the wooden composite vertical frame 14b2 outwards from the wooden vertical frame 14b1.

[0106] Furthermore, in the wooden composite sash according to the embodiment of the present invention, the visible wooden upper frame 11b2, the visible wooden lower frame 12b2, and the visible wooden vertical frame 13b2 are each provided with metal engaging fittings 11b3, 12b3, and 13b3 that open toward the exterior, while the corresponding metal upper frame 11a1, the metal lower frame 12a1, and the metal vertical frame 13a are each provided with the corresponding concealed wooden upper frame 11b1 and the concealed wooden lower frame 12b1. The wooden upper frame fixing piece 11a52, wooden lower frame fixing piece 12a52, and wooden vertical frame fixing piece 13a6 for concealing are provided to fix the wooden vertical frame 13b1 for concealment with wood tapping screws 42, and the engaging fittings 11a53, 12a53, 13a8 for engaging the engaging fittings 11b3, 12b3, 13b3 of the visible wooden upper frame 11b2, the visible wooden lower frame 12b2, and the visible wooden vertical frame 13b2 are provided.

[0107] Therefore, when remodeling the window frame 1, such as changing the design or performing maintenance, if the visible wooden upper frame 11b2, visible wooden lower frame 12b2, and visible wooden vertical frame 13b2 are pushed out from the inside to the outside, the engaging fittings 11b3, 12b3, 13b3 of the visible wooden upper frame 11b2, visible wooden lower frame 12b2, and visible wooden vertical frame 13b2 engage with the engaging fittings 11a53, 12a53, 13a8 of the concealed wooden upper frame 11b1, concealed wooden lower frame 12b1, and concealed wooden vertical frame 13b1, and become engaged. At the same time, in that engaged state, the working wooden upper frame 11b2, visible wooden lower frame 12b2, and visible wooden vertical frame 13b2 are pushed out from the inside to the outside. When pulled out to the side, the engaging fittings 11b3, 12b3, and 13b3 of the visible wooden upper frame 11b2, visible wooden lower frame 12b2, and visible wooden vertical frame 13b2 become disengaged from the engaging fittings 11a53, 12a53, and 13a8 of the concealed wooden upper frame 11b1, concealed wooden lower frame 12b1, and concealed wooden vertical frame 13b1, allowing the visible wooden upper frame 11b2, visible wooden lower frame 12b2, and visible wooden vertical frame 13b2 to be removed. Thus, the visible wooden upper frame 11b2, visible wooden lower frame 12b2, and visible wooden vertical frame 13b2, which are the visible parts of the window frame, can be replaced easily and at low cost.

[0108] Furthermore, in the wooden composite sash according to the embodiment of the present invention, the visible wooden upper frame 11b2, the visible wooden lower frame 12b2, and the visible wooden vertical frames 13b2, 14b2 are provided to protrude inward more than the corresponding concealed wooden upper frame 11b1, the concealed wooden lower frame 12b1, and the concealed wooden vertical frames 13b1, 14b1, respectively, and the visible wooden upper frame 11b1, the visible wooden lower frame 12b2, and the visible wooden vertical frames 13b2, 14b2 are provided to protrude inward more than the corresponding concealed wooden upper frame 11b1, the concealed wooden lower frame 12b1, and the concealed wooden vertical frames On the surfaces of frames 13b1 and 14b1, where they protrude from the concealing wooden upper frame 11b1, the concealing wooden lower frame 12b1, and the concealing wooden vertical frames 13b1 and 14b1, L-shaped brackets 11b4, 12b4, 13b4, and 14b4 are provided, as shown in Figures 7 and 8, etc., to detachably fix the visible wooden upper frame 11b2, the visible wooden lower frame 12b2, and the visible wooden vertical frames 13b2 and 14b2 to the concealing wooden upper frame 11b1, the concealing wooden lower frame 12b1, and the concealing wooden vertical frames 13b1 and 14b1, respectively, using wood tapping screws 42.

[0109] Therefore, even if the wooden upper frame 11, wooden lower frame 12, and wooden vertical frames 13b, 14b that make up the window frame 1 are made of different materials, such as a concealing window frame made of concealing wood and a visible window frame made of decorative wood (picture frame material), they can be securely fixed. Furthermore, when remodeling the window frame 1, such as changing the design or performing maintenance, if only the visible window frame needs to be removed and replaced, the L-shaped brackets 11b4, 12b4, 13b4, 14b4 can be removed, and then basically the engaging brackets 11b3, 12b3, 13b3 can be released from the engaging brackets 11a53, 12a53, 13a8 provided on the metal upper frame 11a1, metal lower frame 12a1, and metal vertical frame 13a, so the visible window frame can be easily replaced.

[0110] Furthermore, in the wooden composite sash according to the embodiment of the present invention, the metal upper frame 11a1, metal lower frame 12a1, and metal vertical frame 13a each have fitting parts 11a54, 12a54, and 13a71 for attaching airtight material, which are provided in contact with the wooden upper frame 21b, wooden lower frame 22b, and wooden door edge frame 23b that are the innermost parts of the movable sash on the exterior side, along with engaging fittings 11a53, 12a53, and 13a8 that engage with the engaging fittings 11b3, 12b3, and 13b3 provided on the visible wooden upper frame 11b2, visible wooden lower frame 12b2, and visible wooden vertical frame 13b2, respectively, and airtight material 43 that abuts against the wooden upper frame 21b, wooden lower frame 22b, and wooden door edge frame 23b that are the innermost parts of the movable sash on the exterior side. When remodeling the window frame 1, such as changing the design or performing maintenance, even if the visible wooden upper frame 11b2, visible wooden lower frame 12b2, and visible wooden vertical frame 13b2 are removed and replaced, the metal upper frame 11a1, metal lower frame 12a1, and metal vertical frame 13a remain in place. This prevents damage to the airtightness of the exterior movable sash 2, and also makes it easier to remove the airtight seal 43 from the interior side when the visible wooden upper frame 11b2, visible wooden lower frame 12b2, and visible wooden vertical frame 13b2 are removed, thereby improving maintenance performance.

[0111] In the above description of the embodiment, an outward-moving single-sliding window was used as an example. However, the present invention is not limited to outward-moving single-sliding windows, but can also be applied to sliding windows, inward-moving single-sliding windows, and even wooden composite sashes and wooden composite sashes such as casement windows, outward-opening windows, double-opening windows, and fixed windows (non-opening windows). [Explanation of Symbols]

[0112] 1 Window frame 11 Top frame 11a Metal upper frame 11a1 Upper frame hollow section 11a2 Upper frame shoji facing surface part 11a21, 11a22 Tapping holes (tapping area) 11a3 Upper frame outer surface 11a4 Upper frame side shoji rail section 11a5 Wooden upper frame connecting piece 11a51 Tapping hole (tapping part) 11a52 Wooden upper frame fixing piece for concealment 11a53 Engaged part 11a54 Fitting part for attaching airtight material 11a6 Upper frame indoor / outdoor boundary area 11a7 Wooden upper frame retainer for concealment (one side) 11a71 Engagement part 11b Wooden composite upper frame 11b1 Wooden upper frame for concealment (Wooden horizontal frame for concealment) 11b11 Groove 11b2 Wooden upper frame for visible portion (wooden window frame for visible portion) 11b3 Engagement fittings 11b4 L-shaped fixing bracket 12a Metal bottom frame 12a1 Lower frame hollow section 12a2 Lower frame shoji facing surface part 12a21, 12a22 Tapping holes (tapping area) 12a3 Bottom frame outer surface 12a4 Lower frame side sash rail section 12a5 Wooden lower frame connecting piece 12a51 Tapping hole (tapping part) 12a52 Wooden lower frame fixing piece for concealment 12a53 Engaged part 12a54 Fitting part for attaching airtight material 12a55 Metal lower stile fixing piece 12a6 Lower frame interior / exterior boundary surface 12a7 Wooden bottom frame retainer for concealment (one side) 12a71 Engagement part 12b Wooden bottom frame 12b1 Wooden bottom frame for concealment (wooden window frame for concealment) 12b11 Groove 12b2 Wooden lower frame for visible portion (wooden window frame for visible portion) 12b3 Engagement fittings 12b4 L-shaped fixing bracket 13 Left vertical frame 13a Metal vertical frame 13a1 Vertical frame hollow section 13a2 Vertical frame shoji facing surface part 13a21 Positioning piece 13a3 Metal vertical frame, outdoor exposed surface 13a4 Left vertical frame fixing piece 13a5 Wooden vertical frame support piece for concealment 13a51 Engagement part 13a6 Wooden vertical frame fixing piece for concealment 13a7 Wooden vertical frame support piece for visible use 13a71 Fitting part for attaching airtight material 13a8 Engaged metal fitting 13a81 Engaged metal fitting body 13a811 Screw hole 13a82 Engaged part 13b Wooden composite vertical frame 13b1 Wooden vertical frame for concealment (wooden window frame for concealment) 13b11 Groove 13b2 Wooden vertical frame for visible portion (wooden window frame for visible portion) 13b3 Engagement fittings 13b31 Engaging fitting body 13b311 Screw hole 13b32 Engaging part 13b321 Chevron engagement convex part 13b4 L-shaped fixing bracket 13b41 L-shaped fixed piece 13b411 Screw hole 14 Right vertical frame 14a Metal vertical frame 14a1 Vertical frame hollow section 14a2 Vertical frame shoji facing surface part 14a3 Metal vertical frame, outdoor exposed surface 14a4 Right vertical frame fixing piece 14a5 Wooden vertical frame support piece for concealment 14a51 Engagement part 14a6 Wooden vertical frame fixing piece for concealment 14a7 Metal vertical frame outdoor exposed surface 14a71 Groove for mounting trim material 14a8 Wooden vertical frame fixing piece for visible use 14b Wooden composite vertical frame 14b1 Wooden vertical frame for concealment (wooden window frame for concealment) 14b11 Groove 14b2 Wooden vertical frame for visible portion (wooden window frame for visible portion) 14b4 L type fixing bracket 2. Movable sliding door on the outside 21 Upper stile 21a Metal upper frame cover 21a1 Metal upper hollow part 21a11 Tapping hole (tapping part) 21a2 U-shaped channel for shoji screen guidance 21a3 Wooden upper stile fixing piece 21a4 Groove for mounting trim material 21a41 Exterior side piece for securing trim material 21a42 Indoor side piece for holding edge material 21b Wooden upper stile 21b1 Wooden upper stile side fixing part 21b2 Double-glazed glass support section 22 Lower stile 22a Metal bottom frame cover 22a1 Lower stile cover outdoor exposed surface 22a2 Projection piece for fitting the rim 22a3 Wooden lower stile fixing piece 22a31 Tapping hole (tapping part) 22a33 Drainage slit (drainage opening) 22a4 Lower projection for mounting wooden frame 22a41 Wooden lower stile lower support part 2a41a Drainage slit (drainage opening) 22a42 Connecting piece 2a42a Drainage slit (drainage opening) 22b Wooden bottom frame 22b1 Wooden lower stile side fixing part 22b2 Double-glazed glass support section 22b3 Metal lower frame cover fitting part 22b4 Door roller storage section 22c Door roller 23a Metal door frame cover 23a1 Recess for positioning door frame cover 23a2 Outdoor exposed surface 23a3 Groove for mounting trim material 23a31 Exterior side piece for securing trim material 23a32 Indoor side piece for holding edge material 23a4 Wooden door frame fixing piece 23b Wooden door frame 23b1 Wooden door frame side fixing part 23b2 Double-glazed glass support section 23b3 Protruding part for concealing door frame cover 24 Sewing frame 24a Metal door frame cover 24a1 Meeting stile cover, outdoor exposed surface 24a2 Meeting stile cover, opposing surface of vertical stile 24a3 Groove for mounting trim material 24a31 Exterior side piece for securing trim material 24a32 Indoor side piece for holding edge material 24a4 Wooden stile fixing piece 24a5 Smoke deflector section 24b Wooden stile 24b1 Wooden stile side fixing part 24b2 Double-glazed glass support section 25 Double-glazed section 3. Indoor fixed shoji screen 31 Upper stile 31a Metal upper stile 31a Metal upper frame cover 31a1 Metal split outer hollow forming part 31a11 Tapping hole (tapping part) 31a12 Wooden upper stile fixing piece 31a13 Engagement part 31a14 Groove for mounting trim material 31a2 Metal split inner hollow forming part 31a21 Metal upper frame fixing piece 31a22 Engaged part 31a23 Wooden upper stile room outer side contact piece 31b Wooden upper frame 31b1 Wooden upper stile side fixing part 31b2 Double-glazed glass support section 32 Lower stile 32a Metal bottom frame cover 32a1 Metal split outer hollow forming part 32a11 Tapping hole (tapping part) 32a12 Wooden lower frame fixing piece 32a13 Engagement part 32a14 Groove for mounting trim material 32a2 Metal split inner hollow forming section 32b Wooden bottom frame 32b1 Wooden lower stile side fixing part 32b2 Double-glazed glass support section 33. Meeting of the Political Principles 33a Metal meeting stile frame cover 33a1 Smoke deflector section 33a2 Wooden mullion fixed piece 33a3 Groove for mounting trim material 33a4 Fitting part for attaching airtight material 33b Wooden meeting stand 33b1 Wooden stile side fixing part 33b2 Double-glazed glass support section 33b Wooden meeting stand 35 Double-glazed section 41 Tapping screws for metal 42 Wood tapping screws 42' Countersunk screw 43 Airtight material 44. Trim material 44a Locking part 46 Large resin spacers 47 Small resin spacers 48 Large rubber spacers 49 Small rubber spacers

Claims

1. A wooden composite sash in which a sash is installed in a window frame opening enclosed by left and right vertical frames having wooden composite vertical frames and metal vertical frames, and upper and lower horizontal frames having wooden composite horizontal frames and metal horizontal frames, The aforementioned wooden composite horizontal frame and wooden composite vertical frame are, respectively, A wooden window frame for appearance that is exposed in the aforementioned window frame opening, The system includes a concealing wooden window frame made of a different piece of wood from the aforementioned visible wooden window frame, which is located on the opposite side of the window frame opening, not exposed to the window frame opening, and detachably attached to the visible wooden window frame. The aforementioned wooden window frame for concealing the view is fixed with screws to the corresponding metal horizontal frame or metal vertical frame, characterized in that it is a wooden composite sash.

2. In the wooden composite sash according to claim 1, The aforementioned wooden window frame for appearance is provided with a metal or resin engaging portion that opens toward the outside, The aforementioned metal horizontal frame and metal vertical frame each have, A fixing piece is provided for fixing the corresponding wooden window frame for concealment with screws, and an engaged portion is provided for engaging with the engaging portion of the wooden window frame for visibility. The wooden composite window frame is characterized in that, when the visible wooden window frame is pushed out from the interior to the exterior, the engaging portion of the visible wooden window frame engages with the engaged portion of the concealed wooden window frame, and when it is pulled out from the exterior to the interior in that engaged state, the engaging portion of the visible wooden window frame becomes disengaged from the engaged portion of the concealed wooden window frame, allowing it to be removed from the concealed wooden window frame.

3. In the wooden composite sash according to claim 2, The aforementioned visible wooden window frame is provided to protrude more inward than the aforementioned concealed wooden window frame, A wooden composite sash characterized in that an L-shaped bracket is provided on the side of the visible wooden window frame that faces the concealed wooden window frame, at a portion that protrudes from the concealed wooden window frame, for detachably fixing the visible wooden window frame and the concealed wooden window frame with screws.

4. In the wooden composite sash according to claim 1, The aforementioned metal horizontal frame and metal vertical frame each have, A wooden composite sash characterized in that an airtight material is provided that abuts against the sash in accordance with the position of the outdoor end face of the corresponding visible wooden window frame.

5. In a wooden composite sash according to any one of claims 1 to 4, The aforementioned shoji screen is a wooden composite sash characterized by having a glass section surrounded on all four sides by left and right wooden composite vertical frames having wooden vertical frames and metal vertical covers, and upper and lower wooden composite horizontal frames having wooden horizontal frames and metal horizontal covers.

Images