sash

Abstract

To provide a sash with improved strength against the load from the outdoor side to the indoor side.SOLUTION: A sash 100 includes: a rectangular outer frame 1; a slidable paper sliding door S fitted inside the ring of the outer frame 1; and a reinforcement 8 placed closer to the room than the paper sliding door S in the depth direction of the outer frame 1. The paper sliding door S has a face material 35, and an inner meeting stile 30B fixed inside the depth direction on the perimeter of the face material 35. The reinforcement 8 overlaps with the inner meeting stile 30B in the depth direction of the outer frame 1 and is arranged along the extension direction of the inner meeting stile 30B.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a sash. [Background technology]

[0002] Patent Document 1 describes a sliding sash. In this sash, an outer shoji screen and an inner shoji screen, each consisting of a four-sided frame, are mounted on a sash frame that is made up of a frame on all four sides, and are movable along guide rails on the top and bottom frames. This sash is equipped with a support member on the top of the inner shoji screen's inner frame. The support member has a support part located between the inside of the inner shoji screen guide rail on the top frame of the sash frame and the interior hanging piece of the upper frame. In this sash, the support part compensates for any lack of strength in the support member, and it is said that the sash is strong enough to withstand the pressure exerted on the inner shoji screen due to the air pressure difference from the inside to the outside of the room. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 11-193673 Summary of the Invention [Problem to be solved by the invention]

[0004] Conventional sashes have room for further improvement in strength against loads from the outside to the inside of the room, for example, strength to withstand forces due to air pressure differences and wind forces.

[0005] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a sash having improved strength against a load from the outside to the inside of the room. [Means for solving the problem]

[0006] In order to achieve the above object, the sash according to the present invention comprises: A rectangular window frame, A sliding door fitted inside the ring of the window frame and capable of sliding; A reinforcing material is provided which is arranged on the indoor side of the shoji screen in the projection direction of the window frame, The shoji screen has a surface material and a frame fixed to the inside of the outer periphery of the surface material in the viewing direction, The reinforcing material overlaps with the stile in the projection direction of the window frame and is arranged along the extension direction of the stile.

[0007] The sash according to the present invention further comprises: The stiffener may be secured to the stile.

[0008] The sash according to the present invention further comprises: The reinforcement may be secured to the window frame.

[0009] The sash according to the present invention further comprises: When viewed outward in the projection direction of the window frame, the stile may completely overlap the reinforcement material.

[0010] The sash according to the present invention further comprises: The reinforcement member and the stile may be spaced apart. [Effects of the Invention]

[0011] It is possible to provide a sash with improved strength against loads from the outside to the inside of the room. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 2 is a view of a sash attached to a wall as viewed from the outside of the room. [Figure 2] 2 is a cross-sectional view of the sash taken along line II-II in FIG. 1. [Figure 3] 3 is a cross-sectional view of the sash taken along the line III-III in FIG. 2. [Figure 4] 6 is a cross-sectional view of the sash taken along the line VI-VI in FIG. 2. [Figure 5] A horizontal cross-sectional view of the left outer frame and inner frame portions. [Figure 6] Another horizontal cross-sectional view of the left outer and inner frame portions. [Figure 7] Another horizontal cross-sectional view of the left outer and inner frame portions. [Figure 8] This is another horizontal cross-sectional view of a sash in which a reinforcing material is placed inside the room rather than the inner shoji screen, and a gap is provided between the inner shoji screen and the reinforcing material. [Figure 9] This is a horizontal cross-sectional view of a sash equipped with frame insulation placed on the interior side of the room in the direction of the shoji screen. [Figure 10] FIG. 10 is a cross-sectional view taken along the arrow XX in FIG. 9. [Figure 11] FIG. 10 is a cross-sectional view taken along the line XI-XI in FIG. 9. DETAILED DESCRIPTION OF THE INVENTION

[0013] A sash according to an embodiment of the present invention will be described with reference to the drawings.

[0014] The sash described below is used as one of the building materials for a building such as a multi-story house with a steel frame. A building using the sash described below may be composed of a reinforced concrete foundation, a framework made up of framework members such as columns and beams, and a superstructure fixed to the foundation, which has panels forming walls, floors, etc. The framework members and panels may be standardized in advance. In this case, the framework members and the like can be manufactured in advance in a factory and transported to the construction site, where the building can be assembled.

[0015] (Summary) As shown in Fig. 1, a sash 100 according to this embodiment is attached to a wall 200 of a building when used. Fig. 1 is a view of the sash 100 attached to the wall 200 as viewed from the outside in the projection direction. The projection direction is the same direction as the direction perpendicular to the wall 200 when the sash 100 is attached to the wall 200. In this embodiment, the wall 200 is erected perpendicular to the ground, and the projection direction is along the horizontal direction.

[0016] The sash 100 comprises at least an outer frame 1, which is a rectangular window frame, a shoji screen S fitted inside the ring of the outer frame 1, and a reinforcing member 8 arranged on the interior side of the shoji screen S in the projection direction of the outer frame 1. As an example, the shoji screen S is slidable in the projection direction. Note that the projection direction is the direction that, when the sash 100 is attached to the wall 200, runs horizontally with respect to the ground on which the building is installed and runs along the wall surface of the wall 200. The projection direction is perpendicular to the projection direction.

[0017] In the following, for the sake of convenience, when we simply refer to the outside or inside of the room, it means the inside of the room in the expected direction, and when we simply refer to the outside or outside of the room, it means the outside of the room in the expected direction. The outside of the surface or the outside direction of the surface of a shoji screen S is the same as the outside of the surface or the direction facing the outside in the expected direction. The term "viewing towards the inside of the room in the expected direction" means looking from the outside of the room towards the inside in the expected direction, and the term "viewing towards the outside of the room in the expected direction" means looking from the inside of the room towards the outside in the expected direction.

[0018] For ease of explanation, the same direction as the find direction may be referred to simply as the width direction in the following description. Also, simply referring to the inside of the width direction means the direction facing the inside of the ring of the outer frame 1 in the find direction, and simply referring to the outside of the width direction means the direction facing the outside of the ring of the outer frame 1 in the find direction.

[0019] For ease of explanation, the left side in the width direction when viewed from the outside of the room in the expected direction will be referred to simply as the left or left side, the right side in the width direction will be referred to simply as the right or right side, etc. Furthermore, the upward vertical direction will be referred to simply as the top or upper side, and the downward vertical direction will be referred to simply as the bottom or lower side.

[0020] The shoji screen S has at least an inner shoji screen 3. In this embodiment, as an example, the shoji screen S has a pair of outer shoji screens 2 and inner shoji screens 3. The inner shoji screen 3 is located closer to the interior of the room than the outer shoji screen 2. The outer shoji screen 2 and inner shoji screens 3 slide in the front direction to form a double sliding door. When closed, the inner shoji screen 3 (shoji screen S) has a face material 35 and an inner joining frame 30B fixed to the inner part of the outer periphery of the face material 35 in the front direction. When viewed from the front direction of the outer frame 1, the reinforcing material 8 overlaps with the inner joining frame 30B and is arranged along the extension direction of the inner joining frame 30B. Unless otherwise specified, the following explanation of the positional relationship of each part of the shoji screen S will be based on the shoji screen S being closed.

[0021] (Detailed explanation) Fig. 2 shows a cross section taken along the line II-II in Fig. 1, i.e., a horizontal cross section of the sash 100 as viewed from above. As shown in Fig. 2, the sash 100 comprises an outer frame 1 that is rectangular when viewed from the front, an inner frame 4 that is a window frame fitted inside the ring of the outer frame 1 and into the interior portion of the outer frame 1, outer shoji screen 2 and inner shoji screen 3 as shoji screens S fitted inside the ring of the outer frame 1, a window frame insulation material 6 arranged to surround the outer periphery of the interior portion of the outer frame 1, and a reinforcing material 8 arranged on the interior side of the shoji screen S. The outer shoji screen 2 and inner shoji screen 3 are slidable in the width direction inside the ring of the outer frame 1 in a double sliding manner.

[0022] The outer shoji screen 2 comprises a rectangular frame 20 when viewed from the front, and face materials 25, 26 fitted inside the ring of the frame 20. The face materials 25, 26 overlap when viewed from the front, with the face material 26 being positioned closer to the interior of the room than the face material 25. The face materials 25, 26 are, for example, glass plates.

[0023] The frame 20 includes a doorstop frame 20A that extends vertically and is the frame closest to the outer frame 1 in the width direction, an outer meeting frame 20B that extends vertically and is the frame away from the outer frame 1 in the width direction, a lower frame 20C (see FIG. 3) that extends horizontally and is located on the lower side, and an upper frame (not shown) that extends horizontally and is located on the upper side. The frame 20 may be an integrally formed frame body, or may be formed by combining multiple frame materials.

[0024] In this embodiment, as an example, the frame 20 is formed of an outer frame 21 made of a metal material such as aluminum or an aluminum alloy, and an inner frame 22 made of a resin such as polyvinyl chloride (PVC). The outer frame 21 and the inner frame 22 are each rectangular frames. The outer frame 21 and the inner frame 22 may each have a hollow structure to improve thermal insulation performance and reduce weight. The outer frame 21 is located on the outdoor side of the inner frame 22. The outer frame 21 and the inner frame 22 overlap when viewed from the front. The outer frame 21 and the inner frame 22 are connected together to form the frame 20. Since resin generally has a lower thermal conductivity than metal materials, using the inner frame 22 on the indoor side of the frame 20 can improve the thermal insulation performance of the sash 100 (see Figure 2).

[0025] The inner shoji screen 3 comprises a rectangular frame 30 when viewed from the front, and face materials 35, 36 fitted inside the ring of the frame 30. The face materials 35, 36 overlap when viewed from the front, with the face material 36 being positioned closer to the interior of the room than the face material 35. The face materials 35, 36 are, for example, glass plates.

[0026] The frame 30 includes a doorstop frame 30A extending vertically and positioned closest to the outer frame 1 in the width direction, an inner frame 30B extending vertically and positioned away from the outer frame 1 in the width direction, a lower frame 30C (see FIG. 4) extending horizontally and positioned at the bottom, and an upper frame (not shown) extending horizontally and positioned at the top. The frame 30 may be a single frame body, or may be formed by combining multiple frame members. The inner frame 30B overlaps with the outer frame 20B when viewed from the front.

[0027] In this embodiment, as an example, the frame 30 is formed of an outer frame 31 made of a metal material such as aluminum or an aluminum alloy, and an inner frame 32 made of a resin such as polyvinyl chloride (PVC). The outer frame 31 and the inner frame 32 are each rectangular frames. The outer frame 31 and the inner frame 32 may each have a hollow structure to improve thermal insulation performance and reduce weight. The outer frame 31 is located on the outdoor side of the inner frame 32. The outer frame 31 and the inner frame 32 overlap when viewed from the front. The outer frame 31 and the inner frame 32 are connected together to form the frame 30. Since resin generally has a lower thermal conductivity than metal materials, using the inner frame 32 on the indoor side of the frame 30 can improve the thermal insulation performance of the sash 100 (see Figure 2).

[0028] As shown in FIG. 1 , the outer frame 1 includes a first vertical frame 11 and a second vertical frame 12, which are vertical frames on both the left and right sides of the outer frame 1, and an upper frame 14 and a lower frame 13, which are horizontal frames on the top and bottom of the outer frame 1. The outer frame 1 is fixed to the wall 200 while extending along the wall surface of the wall 200. The outer frame 1 is fixed to the wall 200 with its outer periphery embedded in the wall 200. The outer frame 1 may be formed by integrally forming the frames 11 to 14, or may be formed by connecting separately formed frames 11 to 14 together. The outer frame 1 may be formed from a metal material such as aluminum or an aluminum alloy, or from a resin. The outer frame 1 may have a hollow structure to improve thermal insulation performance and reduce weight. In this embodiment, the following description will be given using an example in which the outer frame 1 is formed from an aluminum alloy.

[0029] As shown in Figures 2 to 4, lower ribs 13a to 13c are formed on the upper surface of the lower frame 13, extending upward and along the extension direction of the lower frame 13. The lower ribs 13a to 13c are arranged in this order from the outside of the room to the inside of the room in the projection direction. Note that Figure 3 shows a cross section taken along arrows III-III in Figure 2. Also, Figure 4 is a cross section taken along arrows VI-VI in Figure 2. In Figures 3 and 4, parts other than the cross section (components visible in the depth direction of the arrows) are not shown.

[0030] The lower rib 13a extends from the outside end of the lower frame 13. The lower rib 13b extends from the upper surface of the lower frame 13, closer to the interior side of the room than the lower rib 13a. The lower rib 13c extends from the upper surface of the lower frame 13, closer to the interior side of the room than the lower rib 13b. The lower rib 13b forms a rail L1 that serves as a guide for sliding the outer shoji screen 2 fitted into the outer frame 1 in the width direction. The lower rib 13c forms a rail L2 that serves as a guide for sliding the inner shoji screen 3 fitted into the outer frame 1 in the width direction. The lower rib 13a overlaps with the lower frames 20B, 30B when viewed from the front.

[0031] In this embodiment, a cover 5 made of resin or the like is attached to the upper surface of the lower frame 13 in the area sandwiched between the lower ribs 13b and 13c. A cover rib 5b is formed on the outdoor end of the cover 5, extending upward and along the extension direction of the lower frame 13. The cover rib 5b is provided adjacent to the lower rib 13b on the indoor side of the lower rib 13b, and together with the lower rib 13b, forms the rail L1.

[0032] Although not shown, the underside of the upper frame 14 also has guides such as rails or grooves for sliding the outer shoji screen 2 and inner shoji screen 3.

[0033] As shown in Fig. 2, a fin-shaped rib 11a is provided on the outside end of the first vertical frame 11, extending inward in the width direction (to the right) and along the extension direction (up-down direction) of the first vertical frame 11. The rib 11a may be integrally molded with the first vertical frame 11, or may be attached and fixed to the first vertical frame 11. In this embodiment, a case in which the rib 11a is integrally molded with the first vertical frame 11 will be described below as an example.

[0034] Rib 11a is spaced apart from and overlaps with doorstop frame 20A when viewed from the front. Rib 11a is located on the exterior side of doorstop frame 20A. Rib 11a extends inward in the width direction beyond center line G1 of doorstop frame 20A. Note that center line G1 typically roughly overlaps with the neutral line when force is applied in the front direction to the outer or inner end of doorstop frame 20A. This improves the strength of outer screen 2 (particularly doorstop frame 20A) against loads from the interior side to the exterior side (outside the surface). Furthermore, from the perspective of fire resistance, the strength of outer screen 2 against energy, force, and impacts that deform outer screen 2 toward the exterior side due to heat, hot air currents, and blasts can be improved, thereby improving fire resistance. Therefore, it is not necessary to increase the size of the outer screen 2 (for example, by increasing the size in the forward direction) in order to improve the strength of the outer screen 2 against loads to the outside of the room. In this way, it is possible to provide a sash 100 that allows the outer screen 2 to stand on its own against loads from the inside to the outside of the room, and has improved strength to the extent that deformation such as twisting of the outer screen 2 can be prevented.

[0035] FIG. 5 shows a horizontal cross section in a top view near the first vertical frame 11 (the left portion of the outer frame 1) and the first vertical inner frame 41 (the left portion of the inner frame 4). In this embodiment, as shown in FIG. 5, the rib 11a extends so that the widthwise inner end 11t of the rib 11a is located at the same position as the widthwise inner end of the door stop frame 20A in the width direction, that is, so that the end 11t and the widthwise inner end of the door stop frame 20A overlap when viewed from the front. Note that, as shown in FIG. 6, the end 11t may be located between the center line G1 of the door stop frame 20A and the widthwise inner end of the door stop frame 20A in the width direction, or may be located further widthwise inward than the widthwise inner end of the door stop frame 20A in the width direction, as shown in FIG. 7. From the viewpoint of design when viewed from the outside in the projection direction, it is preferable to extend the rib 11a in the width direction so that the end 11t is at the same position as the inner end of the doorstop frame 20A in the width direction (see Fig. 5) or further inward in the width direction (see Fig. 6). In other words, by forming the rib 11a in this way, when viewed from the inside in the projection direction, the doorstop frame 20A completely overlaps with the rib 11a, and the rib 11a (outer frame 1) conceals the doorstop frame 20A, resulting in a neat appearance when viewed from the outside of the sash 100 (see Fig. 1).

[0036] As shown in Fig. 2, the second vertical frame 12 has a fin-shaped rib 12a at its outer end on the room side, extending inward in the width direction (left side) and along the extension direction (up-down direction) of the second vertical frame 12. Furthermore, the second vertical frame 12 has a fin-shaped rib 12b at its inner side in the width direction, extending inward in the width direction (left side) and along the extension direction of the second vertical frame 12. The ribs 12a and 12b may be integrally molded with the second vertical frame 12, or may be attached and fixed to the second vertical frame 12. In this embodiment, a case in which the ribs 12a and 12b are integrally molded with the second vertical frame 12 will be described below as an example.

[0037] When viewed from the front, rib 12a is spaced apart from the doorstop frame 30A and rib 12b and overlaps with the doorstop frame 30A. Rib 12a is located on the exterior side of the doorstop frame 30A. Rib 12a, rib 12b, and doorstop frame 30A are arranged in this order from the exterior side to the interior side in the front. Rib 12b is located on the interior side of the doorstop frame 30A in the front, and ribs 12a and 12b function as an outer rib and an inner rib. Rib 12a extends inward in the width direction beyond the center line G2 of the doorstop frame 30A in the width direction. Note that center line G2 typically roughly overlaps with the neutral line when a force is applied in the front direction to the outer or inner end of the doorstop frame 30A in the width direction.

[0038] In this embodiment, the rib 12a extends so that the widthwise inner end of the rib 12a is flush with the widthwise inner end of the doorstop frame 30A, i.e., so that the widthwise inner end of the rib 12a and the widthwise inner end of the doorstop frame 30A overlap when viewed from the front. The widthwise inner end of the rib 12a may be located between the center line G2 of the doorstop frame 30A and the widthwise inner end of the doorstop frame 30A, or may be located further inward than the widthwise inner end of the doorstop frame 30A. From the perspective of design as viewed from the outside in the front direction, it is preferable to extend the rib 12a so that the widthwise inner end of the rib 12a is flush with the widthwise inner end of the doorstop frame 30A or further inward as shown in FIG. 2. By forming the rib 12a in this manner, when viewed from the inside of the room in the forward direction, the door stop frame 30A completely overlaps with the rib 12a, and the rib 12a (outer frame 1) conceals the door stop frame 30A, resulting in a neat appearance of the sash 100 (see Figure 1) when viewed from the outside of the room.

[0039] Rib 12b is spaced apart from and overlaps with doorstop frame 30A and rib 12a when viewed from the front. As described above, rib 12b is located outside doorstop frame 30A and inside doorstop frame 12a. Rib 12b extends inward in the width direction beyond centerline G2 of doorstop frame 30A. As described above, centerline G2 roughly overlaps the neutral line of doorstop frame 30A, improving the strength of outer doorstop frame 3 against loads from the inside to the outside (out-of-plane direction) of inner doorstop frame 3 (particularly, doorstop frame 30A). Furthermore, from the perspective of fire resistance, the strength of outer doorstop frame 3 against energy, force, and impacts that deform outer doorstop frame 3 toward the outside due to heat, hot air currents, and blasts can be improved, improving fire resistance. Therefore, it is not necessary to increase the size of the inner screen 3 (for example, by increasing the size in the forward direction) in order to increase the strength of the inner screen 3 against loads to the outside of the room. In this way, it is possible to provide a sash 100 that allows the inner screen 3 to stand on its own against loads from the inside to the outside of the room, and has improved strength to the extent that deformation such as twisting of the inner screen 3 can be prevented.

[0040] In this embodiment, the rib 12b extends so that the widthwise inner end of the rib 12b is at the same position in the width direction as the widthwise inner end of the doorstop frame 30A, i.e., the same position as the widthwise inner end of the rib 12a. In other words, the rib 12b extends so that the widthwise inner end of the rib 12b and the widthwise inner end of the doorstop frame 30A overlap when viewed from the front direction.

[0041] The inner widthwise end of rib 12b may be located between center line G2 of doorstop frame 30A and the inner widthwise end of doorstop frame 30A, or may be located further inward than the inner widthwise end of doorstop frame 30A. From the perspective of design when viewed from the outside in the projection direction, it is preferable that the inner widthwise end of rib 12b be located in the same position as the inner widthwise end of rib 12b or between center line G2 of doorstop frame 30A and the inner widthwise end of rib 12b. By forming rib 12b in this manner, when viewed from the inside in the projection direction, rib 12b completely overlaps rib 11a, and rib 12a conceals rib 12b, resulting in a neat appearance of sash 100 (see FIG. 1) when viewed from the outside.

[0042] If it is desired to install a screen door on the sash 100, the screen door may be installed, for example, on the outdoor side of the ribs 11a and 12a.

[0043] As shown in Figures 2 to 4, the inner frame 4 is a frame material that is rectangular when viewed from the front and is fitted inside the ring of the outer frame 1 at the inner portion of the outer frame 1 in the front direction. The inner frame 4 is formed of a resin such as polyvinyl chloride (PVC). Since resin generally has a lower thermal conductivity than metal materials, placing the inner frame 4 on the indoor side of the outer frame 1 can improve the thermal insulation performance of the sash 100 (see Figure 2). The inner frame 4 may have a hollow structure to improve thermal insulation performance and reduce weight.

[0044] In FIG. 2, the vertical frames on both the left and right sides of the inner frame 4 are shown as a first vertical inner frame 41 and a second vertical inner frame 42, respectively, and the horizontal frame on the lower side of the inner frame 4 is shown as a lower inner frame 43.

[0045] The first vertical inner frame 41 overlaps with the door stop frame 20A when viewed from the front, and is positioned closer to the interior of the room than the door stop frame 20A. When viewed from the width direction, the first vertical inner frame 41 overlaps with the inner shoji screen 3. When viewed from the front, the second vertical inner frame 42 overlaps with the door stop frame 30A and is positioned closer to the interior of the room than the door stop frame 30A.

[0046] The inner end of the first vertical inner frame 41 in the width direction is located inward in the width direction beyond the center line G1 of the door stop frame 20A in the width direction. This improves the strength of the outer shoji screen 2 (especially the door stop frame 20A) against loads in the in-plane direction (toward the room).

[0047] The inner end of the second vertical inner frame 42 in the width direction is located inward in the width direction beyond the center line G2 of the door stop frame 30A in the width direction. This improves the strength of the outer door stop frame 2 against loads in the in-plane direction (inside the room) relative to the inner door stop frame 3 (especially the door stop frame 30A).

[0048] The inner end in the width direction of the first vertical inner frame 41 and the inner end in the width direction of the second vertical inner frame 42 are each located at the same position in the width direction as the inner ends in the width direction of the doorstop stiles 20A and 30A. As a result, when viewed toward the inside of the room in the forward direction, the first vertical inner frame 41 and the second vertical inner frame 42 completely overlap the doorstop stiles 20A and 30A, respectively, and the doorstop stiles 20A and 30A conceal the first vertical inner frame 41 and the second vertical inner frame 42, resulting in a neat appearance when viewed from the outside of the room of the sash 100 (see FIG. 1).

[0049] The lower inner frame 43 is disposed on the indoor side of the lower frame 13. In this embodiment, it is connected to the indoor side end of the lower frame 13. A lower inner frame rib 43c is formed at the outdoor end of the lower inner frame 43, extending upward and along the extension direction of the lower frame 13. The lower inner frame rib 43c is disposed adjacent to the lower rib 13c on the indoor side of the lower rib 13c, and together with the lower rib 13c, forms the rail L2.

[0050] The window frame insulation 6 is an insulating material such as resin, rubber, or wood formed into a sponge-like, cotton-like, or porous shape. The window frame insulation 6 is arranged so as to surround the outer periphery of the outer frame 1 or the inner frame 4. In this case, the window frame insulation 6 may be embedded within the wall portion 200. The window frame insulation 6 is preferably arranged in contact with the outer peripheral surface of the outer frame 1 or the inner frame 4. The window frame insulation 6 is also preferably arranged on the indoor side of the outer frame 1. This can improve the insulating performance of the sash 100 (see FIG. 2).

[0051] As shown in FIG. 1, the reinforcing member 8 is a frame-shaped member located on the interior side of the inner sash frame 30B. The reinforcing member 8 is a member that reinforces the outer sash frame 3 to improve the strength of the outer sash frame 3 against loads from the outside to the inside of the room (outward from the surface) on the inner sash frame 3 (particularly the inner sash frame 30B). By placing the reinforcing member 8, the strength of the outer sash frame 3 against loads from the outside to the inside of the room can be improved without increasing the size of the inner sash frame 30B in the projected direction. The reinforcing member 8 may be made of a metal material or a resin material, but from the standpoint of thermal insulation, it is preferable to make it of a resin material such as polyvinyl chloride. In other words, if the reinforcing member 8 is made of a resin material, the thermal insulation of the sash 100 can also be improved.

[0052] The reinforcing material 8 may be arranged along the inner joining frame 30B. In this case, it is advisable to overlap the inner joining frame 30B in the projection direction. By overlapping in this way, the strength of the outer screen 3 against loads from the outside to the inside of the room (outside the surface) is appropriately improved.

[0053] Furthermore, when viewed from the inside of the room in the projection direction, the reinforcing material 8 should completely overlap the inner sill 30B, and when viewed from the outside of the room in the projection direction, the sill 30B should completely overlap the reinforcing material 8. In other words, when viewed from one side to the other in the projection direction, the reinforcing material 8 and the sill 30B should overlap so that they hide each other. This improves the design of the sash 100 when viewed from the inside of the room.

[0054] The reinforcing material 8 may be abutted against the indoor surface of the inner joining frame 30B and fixed to the frame 30B by adhesive or screwing. Alternatively, as shown in FIG. 8, in order to suppress heat transfer from the inner joining frame 30B to the reinforcing material 8 and improve insulation, the reinforcing material 8 may be aligned along the indoor side of the inner joining frame 30B and spaced apart from the inner joining frame 30B to provide a gap between the reinforcing material 8 and the inner joining frame 30B. In this case, the upper and lower ends of the reinforcing material 8 may be fixed to the outer frame 1 via the outer frame 1 or the inner frame 4. FIG. 8 shows a case in which the upper and lower ends of the reinforcing material 8 are fixed to the outer frame 1 via the inner frame 4.

[0055] The reinforcing material 8 may have a hollow structure (not shown), or may be composed of a cylindrical outer tube portion 81 made of resin and a skeleton 82 made of a metal material or the like inserted into the cylindrical outer tube portion 81, as shown in Figures 1 and 8.

[0056] In this way, a sash having improved strength against loads from the outside to the inside of the room can be provided.

[0057] [Another embodiment] (1) In the above embodiment, the ribs 11a and 12b overlap with the doorstop stiles 20A and 30A in the projection direction of the outer frame 1. However, it is not essential that both the rib 11a and the rib 12b overlap with the doorstop stile 20A and the doorstop stile 30A, respectively; it is sufficient that the rib 11a and the doorstop stile 20A, or the rib 12b and the doorstop stile 30A, overlap.

[0058] (2) In the above embodiment, the ribs 11a and 12b overlap with the doorstop frames 20A and 30A in the projection direction of the outer frame 1, and the ribs 11a and 12b extend beyond the center lines G1 and G2 of the doorstop frames 20A and 30A in the width direction. However, it is not essential that both the rib 11a and the rib 12b extend beyond the center lines G1 and G2, respectively; it is sufficient that the rib 11a or the rib 12b extends beyond the center line G1 or G2.

[0059] (3) In the above embodiment, the sash 100 is described as being equipped with window frame insulation 6, but in this embodiment, it is not excluded that insulation materials other than the window frame insulation 6 may be added to the sash 100.

[0060] For example, as shown in FIG. 9, the sash 100 may further include a frame insulation 7 arranged on the interior side of the shoji screen S of the outer frame 1 in the projection direction. The frame insulation 7 may be made of, for example, a resin, rubber, or wood insulation material formed in a sponge, cotton, or porous form. The frame insulation 7 may be solid or hollow. Note that FIG. 9 is a horizontal cross-sectional view of the sash 100 at the same cross-sectional position as FIG. 2 when the sash 100 includes the frame insulation 7. In this case, the frame insulation 7 may overlap the bottom frame 20C in the projection direction of the outer frame 1, as shown in FIG. 10. Alternatively, the frame insulation 7 may overlap the bottom frame 30C in the projection direction of the outer frame 1, as shown in FIG. 11. In Figures 9 and 10, the frame insulation material arranged on the indoor side of the lower frame 20C of the outer shoji 2 is shown as outer shoji side frame insulation material 71, and in Figures 9 and 11, the frame insulation material arranged on the indoor side of the lower frame 30C of the inner shoji 3 is shown as inner shoji side frame insulation material 72. Figures 10 and 11 are cross-sectional views taken along the arrows XX and XI-XI shown in Figure 9, respectively.

[0061] The outer shoji side frame insulation material 71 may be fixed by fitting onto the lower frame 13, for example, onto the lower inner frame 43 or cover 5. Figure 10 shows the case where the outer shoji side frame insulation material 71 is placed on the lower inner frame 43 and cover 5. The example shown in Figure 10 illustrates the case where a groove 71a is provided along the width direction at the bottom of the outer shoji side frame insulation material 71, and a rail L2 is fitted into this groove 71a to fix the outer shoji side frame insulation material 71. In this way, by placing and fixing the outer shoji side frame insulation material 71 on the bottom frame 13 (in FIG. 10, it is in contact with the upper surfaces of the lower inner frame 43 and cover 5) on the indoor side of the bottom frame 20C in the projection direction, the gap between the bottom frame 20C and the lower inner frame 43 and cover 5 is narrowed, preventing air leakage (intrusion or outflow) in the projection direction through this gap, thereby improving the thermal insulation of the sash 100. In addition, heat transfer and radiation from the bottom frame 13, lower inner frame 43, cover 5 and bottom frame 20C is hindered, improving the thermal insulation of the sash 100.

[0062] The inner shoji side frame insulation material 72 may be fixed onto the lower frame 13, for example, onto the lower inner frame 43 or cover 5, by fitting or clamping. Figure 11 shows a case where the inner shoji side frame insulation material 72 is fixed by being sandwiched between the lower inner frame 43 and cover 5 and the lower frame 30C. The example shown in Figure 10 illustrates a case where a groove 72a is provided along the width direction at the bottom of the inner shoji side frame insulation material 72, and a rail L2 is fitted into this groove 72a to ensure the inner shoji side frame insulation material 72 is securely fixed. In this way, by sandwiching and fixing the inner shoji side frame insulation material 72 between the top of the bottom frame 13 (top of the lower inner frame 43 and cover 5 in FIG. 11) and the bottom frame 30C, it is possible to inhibit air leakage (intrusion or outflow) in the forward direction through the gap below the bottom frame 30C, for example, the gap between the bottom frame 13 (lower inner frame 43 and cover 5 in FIG. 11) and the bottom frame 30C, thereby improving the thermal insulation of the sash 100. In addition, it is possible to inhibit heat transfer and heat radiation from the bottom frame 13, lower inner frame 43, cover 5, and bottom frame 30C, thereby improving the thermal insulation of the sash 100.

[0063] It is even better to form an insulating rib 72b extending upward from the end on the interior side of the inner shoji frame insulating material 72. If this insulating rib 72b overlaps the lower frame 30C in the projection direction, heat transfer in the projection direction at the lower frame 30C can be hindered, further improving the insulating properties of the sash 100.

[0064] As shown in Figure 9, it is preferable to place the inner shoji side frame insulation material 72 between the door stop frame 30A and the second vertical inner frame 42, and between the door stop frame 30A and the second vertical frame 12. This further improves the insulation properties of the sash 100.

[0065] As shown in Figures 9 to 11, when the outer shoji side frame insulation material 71 (see Figures 9 and 10) and the inner shoji side frame insulation material 72 (see Figures 9 and 11) are fixed by fitting or clamping, the outer shoji side frame insulation material 71 and the inner shoji side frame insulation material 72 may be removable. When the outer shoji side frame insulation material 71 and the inner shoji side frame insulation material 72 are attached to the sash 100, the inner shoji 3 cannot slide (open or close). This may make it impossible or inconvenient to perform maintenance such as cleaning on the exterior surface of the inner shoji 3, for example, the exterior surface of the face material 35 (see Figures 9 and 11). However, if the outer shoji side frame insulation material 71 and the inner shoji side frame insulation material 72 are made detachable, it becomes possible to remove the outer shoji side frame insulation material 71 and the inner shoji side frame insulation material 72 beforehand when carrying out the above maintenance, thereby enabling maintenance of the exterior surface of the face material 35 and improving maintainability. If the outer shoji side frame insulation material 71 and the inner shoji side frame insulation material 72 are made detachable, it is preferable that the outer shoji side frame insulation material 71 and the inner shoji side frame insulation material 72 be made of flexible rubber or sponge.

[0066] The configurations disclosed in the above embodiments (including other embodiments, the same applies below) can be applied in combination with configurations disclosed in other embodiments, as long as no contradiction arises. Furthermore, the embodiments disclosed in this specification are examples, and the embodiments of the present invention are not limited to these, and can be modified as appropriate within the scope that does not deviate from the purpose of the present invention. [Industrial Applicability]

[0067] The present invention is applicable to sashes. [Explanation of symbols]

[0068] 1 Outer frame (window frame) 100 sashes 11 First vertical frame 11a Rib 11t end 12 Second vertical frame 12a Rib 12b Rib 13 Bottom frame 13a Rib 13b Rib 13c Rib 14 Upper frame 2. Outer Shoji Screen 20 stile 200 Wall 20A Doorstop frame 20B Outer joining frame 20C Lower stile 21 Outer stile 22 Inner stile 25 Surface material 26 Surface material 3. Outer Shoji Screen 30 stile 30A Doorstop frame 30B Inner joining frame 30C Lower stile 31 Outer stile 32 Inner stile 35 Surface material 36 Surface material 4 Inner frame (window frame) 41 First vertical inner frame 42 Second vertical inner frame 43 Lower inner frame 43c Lower inner frame rib 5 Cover 5b Cover Rib 6. Window frame insulation 7 Frame insulation 71 Outer shoji side frame insulation material 71a Groove 72 Shoji side frame insulation material 72a Groove 72b Insulation rib 8 Reinforcement 81 Outer cylinder 82 Skeleton L1 rail L2 rail S Shoji screen

Claims

1. A rectangular window frame, A sliding door fitted inside the ring of the window frame and capable of sliding; A reinforcing material is provided which is arranged on the indoor side of the shoji screen in the projection direction of the window frame, The shoji screen has a surface material and a frame fixed to the inside of the outer periphery of the surface material in the viewing direction, The reinforcing material overlaps with the stile in the projection direction of the window frame and is arranged along the extension direction of the stile, A sash in which the reinforcement member and the interlocking frame are spaced apart.

2. The sash described in Claim 1, wherein the shoji screen is a sliding screen and has an outer shoji screen and an inner shoji screen positioned inside the room relative to the outer shoji screen.

3. 3. The sash according to claim 1, wherein the reinforcing member is fixed to the window frame.

4. 4. The sash according to claim 1, wherein the frame frame completely overlaps with the reinforcing material when viewed from the outside of the room in the projection direction of the window frame.

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