JP2021161813A - Attachment for sash lower frame and reforming method using the same - Google Patents

Abstract

To provide an attachment for a sash lower frame which, even if there is no difference between a height position of an upper end of an existing sash lower frame provided at a floor-level window of an existing house and a height position of an indoor floor surface, allows the existing sash lower frame to be reformed so as to be a full-flat sash.SOLUTION: An existing sash lower frame 8 to which a sash lower frame attachment 1 is fitted has an upper surface portion 81 and rails 82, 83 having upper ends whose height positions are substantially equal to or lower than a height position of an indoor floor surface 13. Groove portions 85, 86, 87 are formed by the upper surface portion 81 and the rails 82, 83. The sash lower frame attachment 1 is characterized by being formed of attachment members 2, 3, 4 fitted to the respective groove portions 85, 86, 87 and in that the attachment members 2, 3, 4 respectively have plain surface portions 21, 31, 49 whose height positions are substantially equal to the height position of the indoor floor surface 13 when the attachment members are respectively fitted to the corresponding groove portions 85, 86, 87.SELECTED DRAWING: Figure 4

Description

The present invention relates to a sash lower frame attachment for remodeling that is attached to an existing sash lower frame, and a remodeling method using the attachment.

In Patent Document 1, a semi-outdoor space such as a terrace or a balcony is provided on the outdoor side of a living room space such as a living room or a bedroom, and a person provided on the wall between the living room space and the semi-outdoor space can enter and exit. The living room space and the semi-outdoor space are communicated with each other through the opening, and the height of the floor surface of the living room space and the floor surface of the semi-outdoor space are made flush with each other. The invention of a house using a full flat sash that hardly causes a step with a surface is described. According to the invention described in Patent Document 1, since the floor surface from the living room space to the semi-outdoor space is continuously connected without a step through the full flat sash of the opening, the living room space is spaced by the semi-outdoor space. It is described that the space can be made to feel as if it has been expanded, and to have a continuous feeling of openness from indoors to outdoors.

Further, in Patent Document 2, the upper end of the projecting element of the upper plate portion is formed at a predetermined substantially the same height on the lower frame of the existing sash provided at the entrance / exit of the skeleton that separates the interior and the outdoor of the existing building. By fixing the refurbished sash lower frame from above so that the upper end of the protruding element of the refurbished sash lower frame is substantially flat with the floor surface of the room, the existing sash lower frame of the existing building is refurbished. An invention is described in which the elderly and small children are "barrier-free" by eliminating steps that may cause them to stumble or obstruct passage in a wheelchair.

Japanese Unexamined Patent Publication No. 2017-198024 Japanese Unexamined Patent Publication No. 2001-227244

As described above, a house in which a semi-outdoor space is continuously provided on the outdoor side of the living room space through an opening as in the invention described in Patent Document 1 makes the living room space feel wider and more open. Demand has been increasing in recent years because of its excellent effects. When constructing a new house, it is sufficient to design and build a semi-outdoor space as described in Patent Document 1 from the beginning, but since it costs money to build a new house, by remodeling the existing house, There are also many requests to provide a semi-outdoor space as described in Patent Document 1 later.

When it is desired to remodel an existing house to provide a semi-outdoor space as described in Patent Document 1, when a sweep-out window that opens to the floor of the room is provided on the outer wall that separates the interior and the outside of the existing house. By using this sweep-out window and providing an outdoor floor such as a deck on the outdoor side of the sweep-out window so that it is flush with the floor surface on the indoor side, it is semi-outdoor at no cost. It is thought that a space can be provided.

However, since the sash lower frame of the sweep-out window provided in such an existing house is not usually a full flat sash as described in Patent Document 1, the floor on the indoor side on the outdoor side of the sweep-out window. If only a flush outdoor floor is provided, the continuity between the indoor floor surface and the outdoor floor floor surface will be interrupted at the sash lower frame portion of the sweep-out window, which is described in Patent Document 1. It is difficult to obtain the effect of the semi-outdoor space as described. Therefore, if the lower frame of the sash of the sweep window can be made into a full flat sash by reforming, it is considered that a semi-outdoor space having continuity from the floor surface on the indoor side to the floor surface of the outdoor floor can be formed.

In Patent Document 2, by attaching a refurbished sash lower frame in which the upper ends are aligned so as to overlap the existing sash lower frame, the height position of the floor surface in the room and the height of the upper end of the refurbished sash lower frame are provided. An invention is described in which the positions are made substantially equal to each other to make them barrier-free. However, in the invention described in Patent Document 2, since the refurbished sash lower frame newly provided with a protruding element such as a rail is superposed on the existing sash lower frame, the existing sash lower frame is used. It is difficult to equalize the height position of the existing indoor floor with the height position of the upper end of the lower frame of the refurbished sash unless it is provided considerably lower than the floor surface of the room. If there is no difference between the height position of the upper end of the existing sash lower frame and the height position of the existing interior floor, or if it is not large enough to attach the refurbished sash lower frame, the invention described in Patent Document 2 is used. When the existing sash lower frame is remodeled, the height position of the upper end of the refurbished sash lower frame will be higher than the height position of the floor surface of the existing interior floor, so the floor surface of the existing interior floor will be raised. It is costly because it requires a new remodeling of the interior floor to match the height position of the upper end of the lower frame of the refurbished sash. Further, the invention described in Patent Document 2 is for aligning the positions of the upper ends of protruding elements such as rails of the lower frame of the refurbished sash to make the upper ends of the protruding elements barrier-free so as not to protrude from the floor surface in the room. Therefore, a large groove is formed between the rails of the lower frame of the refurbished sash, and a full flat sash that makes the groove between the rails as flat as possible is not considered.

The present invention has been made in view of the above circumstances, and there is no difference between the height position of the upper end of the lower frame of the existing sash provided in the sweep-out window of the existing house and the height position of the floor surface in the room. Even in this case, it is an object of the present invention to provide an attachment for a sash lower frame capable of reforming an existing sash lower frame into a full flat sash.

In order to solve the above problems, the attachment for the sash lower frame according to the present invention is attached to the existing sash lower frame provided on the lower side of the opening formed in the outer wall that separates the interior and the outside of the existing house. An attachment for a sash lower frame to be attached, the existing sash lower frame has an upper surface portion covering the lower side at a position lower than the height position of the floor surface in the room and an upper end having the height of the floor surface in the room. At least one rail for guiding a sash that opens and closes the opening provided in the upper surface portion so as to be a position substantially equal to the position or a position lower than the height position of the floor surface in the room, and the upper surface portion. The sash lower frame attachment includes at least two groove portions having the upper surface portion as the bottom surface formed by the portion and the at least one rail portion, and the sash lower frame attachment comprises a plurality of attachment members attached to each of the groove portions. Each of the attachment members is characterized by having a flat surface portion having a height position substantially equal to the height position of the floor surface in the room when attached to the corresponding groove portion.

Preferably, the sash lower frame attachment according to the present invention is characterized in that each of the attachment members is detachably attached to the corresponding groove.

Preferably, the sash lower frame attachment according to the present invention is characterized in that the attachment member attached to the groove on the most outdoor side is fixed to the groove.

Preferably, the sash lower frame attachment according to the present invention is provided with a gap of a predetermined distance between each of the flat surfaces and the at least one rail when each of the attachment members is attached to the corresponding groove. It is characterized by being able to be.

The reform method according to the present invention uses the attachment for the sash lower frame according to the present invention to reform the existing sash lower frame provided on the lower side of the opening formed in the outer wall that separates the interior and the outside of the existing house. The upper surface portion that covers the lower side at a position lower than the height position of the floor surface in the room and the upper end at a position substantially equal to the height position of the floor surface in the room or the floor surface in the room. It is formed by at least one rail for guiding an obstacle for opening and closing the opening provided in the upper surface portion so as to be a position lower than the height position, and the upper surface portion and the at least one rail. By attaching each of the attachment members of the sash lower frame attachment to each of the groove portions of the existing sash lower frame including at least two groove portions having the upper surface portion as the bottom surface, the chamber is provided in each of the groove portions. It is characterized by forming a flat surface portion having a height position substantially equal to the height position of the floor surface of the floor surface.

Preferably, in the remodeling method according to the present invention, an outdoor floor having a height position substantially equal to the height position of the floor surface in the room is provided on the outdoor side of the opening, and the outdoor floor is provided from the floor surface in the room to the outdoor floor. It is characterized in that up to the floor surface of the above is substantially flush with each other through the lower side of the opening.

Preferably, in the reform method according to the present invention, a gap is provided between each of the flat surfaces and the at least one rail, and the opening is guided by the at least one rail. Is provided.

The sash lower frame attachment according to the present invention is a sash lower frame attachment attached to an existing sash lower frame provided on the lower side of an opening formed in an outer wall that separates the interior and the outside of an existing house. The existing sash lower frame has an upper surface portion that covers the lower side at a position lower than the height position of the floor surface in the room and a position where the upper end is substantially equal to the height position of the floor surface in the room or the room. At least one rail for guiding the obstacle that opens and closes the opening provided in the upper surface portion so as to be lower than the height position of the floor surface, and the upper surface portion and the at least one rail. The sash lower frame attachment is composed of a plurality of attachment members attached to each of the grooves, and the attachment members correspond to each other. Each attachment member of the sash lower frame attachment according to the present invention is characterized by having a flat portion having a height position substantially equal to the height position of the floor surface in the room when attached to the groove portion. By attaching to each groove formed in the existing sash lower frame, a flat portion having a height position substantially equal to the height position of the floor surface in the room is formed in each groove portion. Therefore, the sash lower frame according to the present invention. The existing sash lower frame can be easily converted into a full flat sash by the attachment for use.

Preferably, the attachment for the sash lower frame according to the present invention is characterized in that each of the attachment members is detachably attached to the corresponding groove, so that when it is desired to clean dust or dirt accumulated in the groove, etc. In addition, the sash lower frame attachment can be easily removed from the groove for cleaning, and then easily reattached to the groove.

Preferably, the sash lower frame attachment according to the present invention is attached to the most outdoor side groove because the attachment member to be attached to the most outdoor side groove is fixed to the groove. It is possible to prevent the attach member from falling off to the outdoor side.

Preferably, the sash lower frame attachment according to the present invention is provided with a gap of a predetermined distance between each of the flat surfaces and the at least one rail when each of the attachment members is attached to the corresponding groove. Therefore, even after the attachment for the sash lower frame is attached to the existing sash lower frame, a shoji can be provided in the opening by using the rail provided in the existing sash lower frame.

The reform method according to the present invention uses the attachment for the sash lower frame according to the present invention to reform the existing sash lower frame provided on the lower side of the opening formed in the outer wall that separates the interior and the outside of the existing house. The upper surface portion that covers the lower side at a position lower than the height position of the floor surface in the room and the upper end at a position substantially equal to the height position of the floor surface in the room or the floor surface in the room. It is formed by at least one rail for guiding an obstacle for opening and closing the opening provided in the upper surface portion so as to be a position lower than the height position, and the upper surface portion and the at least one rail. By attaching each of the attachment members of the sash lower frame attachment to each of the groove portions of the existing sash lower frame including at least two groove portions having the upper surface portion as the bottom surface, the chamber is provided in each of the groove portions. Since a flat surface portion having a height position substantially equal to the height position of the floor surface of the sash is formed, according to the reform method according to the present invention, the existing sash lower frame is replaced or the floor in the room is raised. By simply attaching the sash lower frame attachment according to the present invention to the existing sash lower frame without performing major reforms such as sashing, the sash lower frame at the lower side of the opening of the existing house can be easily combined with the floor surface of the room. It can be made into a full flat sash by making it substantially flush.

Preferably, in the reform method according to the present invention, an outdoor floor having a height position substantially equal to the height position of the floor surface in the room is provided on the outdoor side of the opening, and the outdoor floor is provided from the floor surface in the room to the outdoor floor. Since the floor surface of the house is made to be substantially flush with the floor through the lower side of the opening, even in an existing house, the interior space is made to feel as if it is spatially expanded, and from the room. It is possible to easily form a semi-outdoor space that gives a feeling of openness that continues to the outdoors.

Preferably, in the reform method according to the present invention, a gap of a predetermined distance is provided between each of the flat surfaces and the at least one rail, and the opening is guided by the at least one rail. Therefore, it is possible to install the new shoji at substantially the same position by using the same rail before and after the remodeling without providing a new rail for the new shoji.

The perspective view which shows the state of the existing sash lower frame provided in the opening of the outer wall of the existing house which is the object of remodeling by the attachment for the sash lower frame which concerns on one Embodiment of this invention. FIG. 1 is a cross-sectional side view taken along the line XX of FIG. FIG. 2 is a cross-sectional side view showing a state of the existing sash lower frame in a state where the existing shoji and the groove cover are removed from FIG. FIG. 3 is a cross-sectional side view showing a state in which the sash lower frame attachment according to the embodiment of the present invention is attached to the existing sash lower frame in the state of FIG. A cross-sectional side view showing a state in which an outdoor floor substantially flush with the indoor floor surface and a new shoji screen are provided from the state of FIG. An attachment for a sash lower frame according to an embodiment of the present invention is attached to an existing sash lower frame, and an outdoor floor is provided on the outdoor side substantially flush with the indoor floor surface, thereby creating a semi-outdoor space in the existing house. The perspective view which shows the state which was provided.

An embodiment of an attachment for a sash lower frame and a reform method using the attachment according to the present invention will be described below with reference to the drawings. However, the following is merely an example of one embodiment of the present invention, and the scope of the present invention is not limited to the following embodiments, and can be appropriately changed without departing from the idea of the present invention. Is.

The sash lower frame attachment 1 according to an embodiment of the present invention is the existing sash lower frame 8 provided on the lower side of the opening 12 formed in the outer wall 11 of the existing house as shown in FIGS. 1 to 3. It is used when performing remodeling. As shown in FIGS. 4 to 6, by attaching the sash lower frame attachment 1 to the existing sash lower frame 8, the height position of the lower side of the opening 12 becomes substantially the same as the height position of the floor surface 13 in the room. Align and make the existing sash lower frame 8 into a full flat sash.

As shown in FIGS. 1 and 2, the opening 12 is provided in the outer wall 11 that separates the interior and the outside of the existing house so as to penetrate the outer wall 11, and is viewed from a direction perpendicular to the outer wall 11. It is a so-called sweep-out window that is substantially rectangular and has a lower side that opens to the height of the floor surface 13 in the room and is formed in a size that allows people to enter and exit. The opening 12 is provided with a sash frame so as to cover its four sides, and inside the sash frame, an inner shoji 71 and an outer shoji 72 for opening and closing the opening 12 are provided. There is. The inner sash 71 is provided on the indoor side and the outer sash 72 is provided on the outdoor side so as to open and close the opening 12 sideways. The 71 and the shoji 72 overlap each other, forming a so-called sliding door. The existing sash lower frame 8 is a lower frame of the sash frame body provided in such an opening 12.

As shown in FIG. 2, the existing sash lower frame 8 according to the present embodiment has an upper surface portion 81 which is an upper surface of the existing sash lower frame 8 covering the lower side of the opening 12, and projects substantially vertically upward from the upper surface portion 81. It has an inner rail 82 and an outer rail 83 provided in this way. The inner rail 82 and the outer rail 83 are strip-shaped rails extending substantially parallel to each other along the longitudinal direction of the lower side of the opening 12, and receive the door roller of the inner shoji 71 and the outer shoji 72 at the upper ends, respectively. It has become. The inner sash 71 can be moved along the inner rail 82 by the door roller 73 of the inner sash 71 traveling on the inner rail 82, and the outer sash 72 has the door sash 74 of the outer sash 72 traveling on the outer rail 83. This makes it possible to move along the outer rail 83.

The height position of the upper surface portion 81 is lower than the height position of the floor surface 13 in the room, and the height position of the upper ends of the inner rail 82 and the outer rail 83 is substantially equal to the height position of the floor surface 13 in the room. It is lower than the height position of the floor surface 13 in the room. In the present embodiment, as shown in FIGS. 2 and 3, the height positions of the upper ends of the inner rail 82 and the outer rail 83 are substantially equal to each other, and are substantially equal to the height position of the floor surface 13 in the room. Is formed in. At the end of the upper surface portion 81 on the indoor side, a side wall 84 that rises substantially vertically upward from the upper surface portion 81 to the floor surface 13 in the room is provided. In the present embodiment, the existing sash lower frame 8 is provided with two rails, an inner rail 82 and an outer rail 83 for guiding the shoji, so that the existing sash lower frame 8 has a side wall 84 and an inner rail 82. The inner groove portion 85 formed on the indoor side of the existing sash lower frame 8 by the upper surface portion 81, and the intermediate groove portion formed in the intermediate portion of the existing sash lower frame 8 by the inner rail 82, the outer rail 83, and the upper surface portion 81. 86, the outer groove portion 87 formed on the outdoor side of the existing sash lower frame 8 by the outer rail 83 and the upper surface portion 81, and the height positions of the floor surfaces 13 in the three rooms having the upper surface portion 81 as the bottom surface. It has a recessed groove.

Since the opening 12 is formed on the outer wall 11, it is exposed to rain on a rainy day, and the rain and the like received by the inner sash 71 and the outer sash 72 provided in the opening 12 are already installed. It will drip onto the upper surface 81 of the sash lower frame 8. Therefore, the upper surface portion 81 is high on the indoor side and low on the outdoor side so that rain is discharged to the outdoor side. In the present embodiment, as shown in FIGS. 2 and 3, in the inner groove portion 85, the upper surface portion 81 extends substantially horizontally or gently downward from the side wall 84 toward the outdoor side, and extends to the inner rail 82. After approaching and inclining downward with a steep slope in the vicinity of the inner groove portion 85 beyond the substantially center of the cross section, the inner groove portion 85 becomes substantially horizontal again and is connected to the inner rail 82. In the intermediate groove portion 86 from the inner rail 82 to the outer rail 83, the upper surface portion 81 extends downward from the inner rail 82 toward the outdoor side with a steep slope, and then extends substantially horizontally to the outer rail 83. In the outer groove portion 87 from the outer rail 83 to the outdoor end side of the upper surface portion 81, the upper surface portion 81 is adapted to be substantially horizontal or gently inclined downward from the outer rail 83 toward the outdoor side. In this way, the upper surface portion 81 is inclined downward or substantially horizontal from the indoor side to the outdoor side, so that the upper surface portion 81 can be poured onto the upper surface portion 81 or from the inner sash 71 and the outer sash 72 to the upper surface. The rain dripping on the portion 81 naturally flows to the outdoor side and is discharged to the outside from the end side of the upper surface portion 81 on the outdoor side. The inner rail 82 and the outer rail 83 are formed to be slightly shorter than the length of the upper surface portion 81 in the longitudinal direction so that rain flows from the inner groove portion 85 to the intermediate groove portion 86 and from the intermediate groove portion 86 to the outer groove portion 87. A gap is provided between both ends of the inner rail 82 and the outer rail 83 and the sash frame provided on the side side of the opening 12.

The inner sash 71 and the outer sash 72 are composed of a stile in which an upper stile, a lower stile, and two vertical stiles are assembled in a rectangular circumferential shape, and a panel body such as glass attached to the inner peripheral portion of the stile. As shown in FIG. 2, the lower stile 75 of the stile of the inner sash 71 and the lower stile 76 of the stile of the outer sash 72 are provided with grooves 77 and 78 along the longitudinal direction on the lower surfaces thereof, respectively. ing. In the inner sash 71, the upper end of the inner rail 82 is engaged with the groove 77 on the lower surface of the lower stile 75, and the door roller 73 provided at the position of the groove 77 inside the lower stile 75 is placed on the upper end of the inner rail 82. The outer sash 72 is mounted so as to be mounted, and the outer sash 72 is provided at the position of the groove 78 inside the lower stile 76 by engaging the upper end portion of the outer rail 83 with the groove 78 on the lower surface of the lower stile 76. The door roller 74 is attached so as to be placed on the upper end of the outer rail 83. Therefore, the height positions of the lower surfaces of the lower stile 75 of the inner sash 71 and the lower stile 76 of the outer sash 72 are lower than the height positions of the upper ends of the inner rail 82 and the outer rail 83, respectively. It prevents the rain, wind, etc. received by the shoji 72 on the outdoor side from easily entering the indoor side. Further, since the inner sash 71 and the outer sash 72 are provided so that the lower parts of the lower stile 75 and the lower stile 76 cover the upper parts of the inner rail 82 and the outer rail 83, respectively, the inner rail 82 and the outer stile 72 are provided. On both sides of the rail 83, a space for accommodating the lower stile 75 and the lower stile 76 is required, but the inner groove portion 85, the intermediate groove portion 86, and the outer groove portion 87 are spaces for accommodating the lower stile 75 and the lower stile 76. It has become.

Further, in the present embodiment, as shown in FIG. 2, cover members 97 and 98 covering the upper surface portion 81 are attached to the inner groove portion 85 and the intermediate groove portion 86, respectively. When the existing sash lower frame 8 is made of metal such as aluminum, the thermal conductivity is high. Therefore, for example, when the outdoor temperature is low in winter, the existing sash lower frame 8 is cooled and the existing sash lower frame 8 is cooled. Heat is exchanged between the room and the outside through the air, and the temperature inside the room may drop. The cover members 97 and 98 are resin covers having lower thermal conductivity than the existing sash lower frame 8 used for relaxing such heat exchange and keeping the room warm. Since the height positions of the lower surfaces of the lower stile 75 of the inner sash 71 and the lower stile 76 of the outer sash 72 are lower than the height positions of the upper ends of the inner rail 82 and the outer rail 83, the cover members 97 and 98 are In the state of being attached to the inner groove portion 85 and the intermediate groove portion 86, the position is lower than the position of the lower end of the inner sash 71 and the outer sash 72 so as not to interfere with the inner sash 71 and the outer sash 72. The protruding small pieces protruding from the base end of the side wall 84 and the base end of the inner rail 82 toward the inner groove 85 shown in FIGS. 2 and 3 are pieces for attaching the cover member 97. .. Further, the intermediate groove portion 86 is provided with a mounting piece 88 projecting substantially vertically upward from the upper surface portion 81. The mounting piece 88 is provided slightly outside the center of the cross section of the intermediate groove 86, extends in the longitudinal direction of the intermediate groove 86, and its upper end does not exceed the height position of the outer rail 83 substantially in the center of the height direction. It is about the height. The intermediate groove portion 86 is also provided with a substantially hook-shaped protruding small piece that protrudes from the middle portion in the height direction of the inner rail 82 toward the intermediate groove portion 86, and as shown in FIG. The cover member 98 is attached to the intermediate groove portion 86 by the attachment piece 88. The substantially hook-shaped protruding small piece projecting toward the intermediate groove portion 86 side of the inner rail 82 is such that the upper surface portion 81 of the intermediate groove portion 86 is inclined downward from the inner rail 82 toward the outdoor side at a steep slope and then substantially horizontally. Although it extends to 83, the protruding length of the upper surface portion 81 is such that it fits within the inclined region.

Further, in the present embodiment, as shown in FIGS. 2 and 3, the outer groove portion 87 is provided with the existing screen door rail 89 protruding upward from the upper surface portion 81. The opening 12 may be provided with a screen door (not shown) on the outdoor side of the shoji 72, and the existing screen door rail 89 is a rail for receiving the door roller of the screen door. The existing screen door rail 89 is a strip-shaped rail provided on the outdoor side of the outer rail 83 and extending along the outer rail 83, and the height position of the upper end thereof is higher than the height position of the upper end of the outer rail 83. Is also low. Since the screen door is for preventing insects and the like from invading the room when the inner shoji 71 or the outer shoji 72 is opened, it is usually lighter than the inner shoji 71 and the outer shoji 72, and the rail for the screen door is It does not require more strength than the inner rail 82 and the outer rail 83 for the inner sash 71 and the outer sash 72, and is usually smaller than the inner rail 82 and the outer rail 83. 2 and 3 show an example in which the height from the base end to the upper end of the existing screen door rail 89 is about one-fourth of the height from the base end to the upper end of the outer rail 83. ing. By running the door roller of the screen door on the existing screen door rail 89, the screen door can move along the existing screen door rail 89.

Further, in the present embodiment, as shown in FIGS. 2 and 3, the existing sash lower frame 8 is composed of two members, an indoor side member 91 and an outdoor side member 92, and the indoor side member 91. A heat insulating member 93 is sandwiched between the outdoor side member 92, and the indoor side member 91 and the outdoor side member 92 are connected by the heat insulating member 93. With such a configuration, even when the indoor side member 91 and the outdoor side member 92 are made of a metal such as aluminum and have high thermal conductivity, the heat insulating member 93 sandwiched between the indoor side member 91 and the outdoor side member 92 can be used with the indoor side. It suppresses heat exchange with the outdoor side and enhances the heat retention in the room. In a state where the indoor side member 91 and the outdoor side member 92 are connected by the heat insulating member 93, the upper surface portion 81 is smoothly connected at the connecting portion of the heat insulating member 93 without grooves or the like, as shown in FIGS. 2 and 3. From the indoor side to the outdoor side, it is watertight and can be regarded as one.

The sash lower frame attachment 1 is used to remodel the existing sash lower frame 8 as described above into a full flat sash. In the present embodiment, the existing sash lower frame 8 includes three groove portions, an inner groove portion 85, an intermediate groove portion 86, and an outer groove portion 87. Therefore, the sash lower frame attachment 1 according to the present embodiment has FIGS. 4 and 5. As shown in the above, an inner attach member 2 attached to the inner groove portion 85, an intermediate attach member 3 attached to the intermediate groove portion 86, and an outer attach member 4 attached to the outer groove portion 87 are provided.

As shown in FIG. 4, the inner attach member 2 includes a flat surface portion 21 having a height position substantially equal to the height position of the floor surface 13 in the room when the inner attach member 2 is attached to the inner groove portion 85. The flat surface portion 21 has a substantially rectangular shape that is long in the longitudinal direction of the inner groove portion 85. The length of the long side of the flat surface portion 21 is substantially equal to the length of the inner groove portion 85 in the longitudinal direction, but the length of the short side of the flat surface portion 21 is between the inner rail 82 of the inner groove portion 85 and the side wall 84. It is shorter than the distance, and when the inner attachment member 2 is attached to the inner groove portion 85, a gap of a predetermined distance is provided between the flat surface portion 21 and the inner rail 82. In the present embodiment, the legs 22 and 23 are provided so as to extend downward from the two opposite long sides of the flat surface portion 21, respectively, and when the inner attach member 2 is attached to the inner groove portion 85, the legs The lower ends of the portion 22 and the leg portion 23 are in contact with the upper surface portion 81, respectively, and the leg portion 22 and the leg portion 23 support the flat surface portion 21 so as to be horizontal.

Further, in the present embodiment, when the inner attach member 2 is attached to the inner groove portion 85, a gap is also provided between the flat surface portion 21 and the side wall 84, and is provided on the side wall 84 side. The leg portion 22 has an inclined portion 24 at an upper portion extending obliquely downward from the long side of the flat surface portion 21 on the side wall 84 side toward the side wall 84 to the vicinity of the side wall 84. Further, in the present embodiment, a protruding small piece projecting inward of the inner groove portion 85 is provided at the base end portion of the side wall 84, and the leg portion 22 is provided from the upper inclined portion 24 and the lower end side of the inclined portion 24. The vertical wall portion 25 extending substantially vertically downward, and the upper surface portion substantially vertically downward after being bent inward of the inner groove portion 85 so as to avoid the protruding small pieces of the base end portion of the side wall 84 from the lower end side of the vertical wall portion 25. It is composed of a substantially inverted L-shaped bent portion 26 extending to 81. On the other hand, the leg portions 23 provided on the inner rail 82 side are a vertical wall portion 27 extending substantially vertically downward from the long side of the inner rail 82 side of the flat surface portion 21 to the upper surface portion 81, and the lower end side of the vertical wall portion 27. It has a locking piece 28 extending from the inner rail 82 toward the base end on the inner groove 85 side.

The inner attach member 2 is detachably attached to the inner groove portion 85 so as to be fitted from above. Since a gap is provided between the flat surface portion 21, the side wall 84, and the inner rail 82, when the inner attach member 2 is removed from the inner groove portion 85, a finger or the like can be inserted into the gap to sandwich the inner attachment member 2. Easy to remove. Further, even if a gap is provided between the flat surface portion 21, the side wall 84, and the inner rail 82, the vertical wall portion 25 of the leg portion 22 extends to the side wall 84 and / or the bent portion 26 of the leg portion 22. Is substantially in contact with the protruding small piece at the base end portion of the side wall 84, and the tip of the locking piece 28 of the leg portion 23 is substantially in contact with the inner rail 82, so that the flat surface portion 21 moves in the lateral direction. Is suppressed.

In the present embodiment, a gap is provided between the flat surface portion 21 and the side wall 84, and the leg portion 22 on the side wall 84 side is a side wall obliquely downward from the long side of the flat surface portion 21 on the side wall 84 side toward the side wall 84. An inclined portion 24 extending to the vicinity of 84 is provided, and the vertical wall portion 25 extends substantially vertically downward from the lower end side of the inclined portion 24. For example, the inclined portion 24 is not provided. The flat surface portion 21 is extended toward the side wall 84, and the vertical wall portion 25 is further extended upward so that the vertical wall portion 25 extends downward directly from the long side of the flat surface portion 21 on the side wall 84 side. A gap may not be provided between the flat surface portion 21 and the side wall 84. Further, a bent portion 26 recessed inward from the vertical wall portion 25 is provided at the lower portion of the leg portion 22, and a protruding small piece for attaching the cover member 97 is provided at the base end portion of the side wall 84. If such a protruding small piece is not provided on the side wall 84, the vertical wall portion 25 is extended downward and abuts on the upper surface portion 81 without providing the bent portion 26. It should be. When the inner attach member 2 is attached to the inner groove portion 85, the flat surface portion 21 is supported so as to be substantially flush with the floor surface 13 in the room, and is predetermined at least in the gap between the flat surface portion 21 and the inner rail 82. Anything will do as long as the intervals between the two are maintained.

The inner attach member 2 does not have to be configured as one member. For example, when the length of the inner groove portion 85 in the longitudinal direction is long, the inner attach member 2 may be composed of a plurality of parts such as those divided in the longitudinal direction, and all the parts are attached to the inner groove portion 85. It suffices if the flat surface portion 21 is formed at the time.

When the inner attachment member 2 is attached to the inner groove portion 85, a flat surface portion 21 is formed in the inner groove portion 85. However, since the flat surface portion 21 is substantially flush with the floor surface 13 in the room, when a person passes through. Since it will be stepped on by the like, the anti-slip may be provided by forming a plurality of grooves on the surface of the flat surface portion 21 or the like.

As shown in FIG. 4, the intermediate attach member 3 includes a flat surface portion 31 that is substantially flush with the floor surface 13 in the room when the intermediate attach member 3 is attached to the intermediate groove portion 86. The flat surface portion 31 has a substantially rectangular shape that is long in the longitudinal direction of the intermediate groove portion 86. The length of the long side of the flat surface portion 31 is substantially equal to the length of the intermediate groove portion 86 in the longitudinal direction, but the length of the short side is larger than the distance between the inner rail 82 and the outer rail 83 of the intermediate groove portion 86. It is shortened so that when the intermediate attachment member 3 is attached to the intermediate groove portion 86, a gap of a predetermined distance is provided between the flat surface portion 31 and the inner rail 82 and the outer rail 83, respectively.

In the present embodiment, the intermediate attach member 3 includes a flat surface portion 31, a leg portion 32 extending substantially perpendicularly downward to the flat surface portion 31 from two opposing long sides of the flat surface portion 31, and two leg portions. A first intermediate attach member 34 having engaging pieces 33 extending from the extending end sides of 32 in directions approaching each other, and one or more second intermediate attach members 35 attached to the first intermediate attach member 34. Consists of.

In the first intermediate attachment member 34, the lengths of the two legs 32 are substantially equal to each other, and the lengths of the two engaging pieces 33 are formed to be substantially equal to each other, and the lengths of the two engaging pieces 33 are formed between the two engaging pieces 33. A gap is provided, and the member is a longitudinal member having a substantially C-shaped cross section.

The second intermediate attach member 35 has two slide grooves 36 in which the two engaging pieces 33 of the first intermediate attach member 34 can each slide inside. The second intermediate attach member 35 engages the two engaging pieces 33 of the first intermediate attach member 34 with the two slide grooves 36, respectively, and slides from the end portion in the longitudinal direction of the first intermediate attach member 34. Then, it is attached to the lower part of the first intermediate attach member 34.

Further, the second intermediate attachment member 35 is provided with a mounting groove 37 that can be engaged with the mounting piece 88 that projects upward from the upper surface portion 81 of the intermediate groove portion 86. The mounting groove 37 is open to the lower surface of the second intermediate attachment member 35, and the lower surface of the second intermediate attachment member 35 is on the lower side, and the upper end of the mounting piece 88 is aligned with the opening of the mounting groove 37. By pushing the intermediate attachment member 35 substantially vertically downward, the mounting piece 88 fits into the mounting groove 37. At that time, the lower surface of the second intermediate attach member 35 comes into contact with the upper surface portion 81 of the intermediate groove portion 86. As shown in FIG. 4, the width of the mounting groove 37 gradually increases from approximately the middle of the mounting groove 37 in the depth direction to the opening so that the mounting piece 88 can be easily engaged with the mounting groove 37. It is formed in a tapered shape.

In the present embodiment, the second intermediate attach member 35 is provided with two mounting grooves 37 substantially parallel to each other, and the second intermediate attach member 35 has two slides with respect to a plane of symmetry passing through the center thereof. The groove 36 and the two mounting grooves 37 are arranged substantially symmetrically to form a substantially plane-symmetrical shape. Further, in the first intermediate attach member 34, the two leg portions 32 and the two engaging pieces 33 are arranged substantially symmetrically with respect to the symmetrical plane substantially perpendicular to the plane portion 31 passing through the substantially center of the cross section of the plane portion 31. Therefore, it has a substantially plane-symmetrical shape. When the second intermediate attach member 35 is attached to the first intermediate attach member 34, the symmetrical plane of the first intermediate attach member 34 and the symmetrical plane of the second intermediate attach member 35 substantially coincide with each other. 1 The intermediate attach member 3 to which one or more second intermediate attach members 35 are attached to the lower portion of the intermediate attach member 34 is substantially perpendicular to a plane of symmetry substantially perpendicular to the plane portion 31 passing through the substantially center of the plane portion 31. It has a plane-symmetrical shape.

Such an intermediate attach member 3 is attached so as to be fitted into the intermediate groove portion 86 from above so that the second intermediate attach member 35 is on the lower side. In the present embodiment, the mounting piece 88 is provided slightly outside the center of the cross section of the intermediate groove portion 86, and the two mounting grooves 37 of the second intermediate attachment member 35 are the flat surfaces of the intermediate attachment member 3. The portion 31 is provided substantially symmetrically with respect to the plane of symmetry passing through the substantially center of the cross section, and is located at a position slightly deviated from the substantially center of the cross section of the flat surface portion 31. The distance between the mounting piece 88 and the substantially center of the cross section of the intermediate groove portion 86 and the distance between each mounting groove 37 and the substantially center of the cross section of the flat surface portion 31 are substantially equal, and are intermediate between the substantially center of the cross section of the flat surface portion 31 and the middle. When the intermediate attach member 3 is pushed substantially vertically downward from above the intermediate groove portion 86 so as to be aligned with the substantially center of the cross section of the groove portion 86, one side of each second intermediate attach member 35 of the intermediate attach member 3 is attached. The mounting piece 88 is fitted into the groove 37, and the intermediate attachment member 3 is mounted on the intermediate groove portion 86.

With the intermediate attachment member 3 attached to the intermediate groove portion 86, the lower surface of each of the second intermediate attachment members 35 comes into contact with the upper surface portion 81 of the intermediate groove portion 86. The first intermediate attach member 34 is supported by each of the second intermediate attach members 35 so that the height position of the flat surface portion 31 is substantially equal to the height position of the floor surface 13 in the room and is substantially horizontal. The length of the flat surface portion 31 in the short side direction is shorter than the distance between the inner rail 82 and the outer rail 83 of the intermediate groove portion 86, and is approximately the center of the cross section of the flat surface portion 31 and the substantially center of the cross section of the intermediate groove portion 86. Since the positions are substantially the same, gaps are provided between the flat surface portion 31 and the inner rail 82 and the outer rail 83, respectively. However, in the intermediate attach member 3 attached to the intermediate groove portion 86, since the attachment groove 37 and the attachment piece 88 are engaged with each other, the movement of the flat surface portion 31 in the short side direction is suppressed. ing. Further, since the intermediate attachment member 3 is attached to the intermediate groove portion 86 by engaging the mounting groove 37 and the mounting piece 88, it can be attached to and detached from the intermediate groove portion 86, and the flat surface portion 31, the inner rail 82, and the outer rail 83 can be attached to and detached from the intermediate groove portion 86. Since there is a gap between the two, it can be removed by inserting a finger into the gap and lifting the intermediate attach member 3 substantially vertically upward, and it is easy to remove from the intermediate groove 86. Is.

In the present embodiment, the upper surface portion 81 of the intermediate groove portion 86 has an inclined region that is steeply inclined downward from the inner rail 82 toward the outdoor side and a substantially horizontal horizontal region that extends from the inclined region to the outer rail 83. There are two regions, and as shown in FIG. 4, the lower surface of the second intermediate attach member 35 of the intermediate attach member 3 attached to the intermediate groove portion 86 comes into contact with the horizontal region of the upper surface portion 81. Therefore, the intermediate attach member 3 has a shape that is substantially plane-symmetric with respect to a symmetrical surface that passes through the substantially center of the cross section of the flat surface portion 31 and is substantially perpendicular to the flat surface portion 31, so that the intermediate attach member 3 is substantially formed on the flat surface portion 31. Even when it is attached to the intermediate groove portion 86 by rotating it 180 degrees with respect to the vertical axis, it can be attached in the same manner. Since the intermediate attach member 3 can be attached to the intermediate groove portion 86 without worrying about the orientation of the intermediate attach member 3, the attachment is easy.

In the present embodiment, the intermediate attach member 3 is attached to the intermediate groove portion 86 by using the attachment piece 88 provided on the upper surface portion 81 of the intermediate groove portion 86 in order to attach the cover member 98 to the intermediate groove portion 86. However, it is not necessary to use the mounting piece 88 for mounting the intermediate attachment member 3. Further, in the present embodiment, the intermediate attach member 3 is composed of two types of members, a first intermediate attach member 34 and one or more second intermediate attach members 35 attached to the first intermediate attach member 34. However, it may be configured without using the second intermediate attach member 35. For example, when a step is provided on the upper surface portion 81 of the intermediate groove portion 86 to which the intermediate attachment member 3 is to be attached and the height position of the upper surface portion 81 differs between the indoor side and the indoor side, or the mounting piece 88 Is not provided, the two legs 32 extending downward from the opposite long sides of the flat surface portion 31 of the first intermediate attach member 34 are lowered until the lower end portion abuts on the upper surface portion 81. The locking piece is extended from the vicinity of the lower end portion of the two leg portions 32 toward the inner rail 82 or the outer rail 83 so that the flat surface portion 31 is horizontally supported by the two leg portions 32. Therefore, the structure may be the same as that of the inner attach member 2, such that the locking piece suppresses the movement of the flat surface portion 31 in the short side direction. When the intermediate attach member 3 is attached to the intermediate groove portion 86, the flat surface portion 31 is supported so as to be substantially flush with the floor surface 13 in the room, and the flat surface portion 31 is between the inner rail 82 and the outer rail 83. Anything may be used as long as the gaps are maintained at predetermined intervals.

In the present embodiment, the intermediate attach member 3 is attached to the lower part of the first intermediate attach member 34 with one or more second intermediate attach members 35, and each second intermediate attach member abuts on the upper surface portion 81 of the intermediate groove portion 86. 35 is configured to support the first intermediate attach member 34. Since the flat surface portion 31 is substantially flush with the floor surface 13 in the room, a downward load is applied to the flat surface portion 31 when a person or the like passes over the floor surface 13. The load applied to the flat surface portion 31 is transmitted from the first intermediate attach member 34 to the upper surface portion 81 through each of the second intermediate attach members 35. If the size of each of the second intermediate attach members 35 is too small, or if the number of the second intermediate attach members 35 attached to the first intermediate attach member 34 is too small, the upper surface portion 81 may be damaged or the first intermediate attach member 35 may be attached. Since the member 34 may be damaged, the size of the second intermediate attach member 35 and the quantity attached to the first intermediate attach member 34 should support the flat surface portion 31 of the first intermediate attach member 34 substantially horizontally. It may be appropriately designed so that The size and number required for the second intermediate attach member 35 differ depending on the material of the first intermediate attach member 34 and the second intermediate attach member 35, the cross-sectional shape of the first intermediate attach member 34, and the like, but usually The second intermediate attach member 35 can be sufficiently shorter than the length of the first intermediate attach member 34 in the longitudinal direction. Therefore, a plurality of second intermediate attach members 35 can be attached to the lower portion of the first intermediate attach member 34, and when the plurality of second intermediate attach members 35 are attached to the first intermediate attach member 34, the adjacent second intermediate members 35 can be attached. Each second intermediate attach member 35 can be arranged so that a sufficient distance is provided between the attach members 35. In the example shown in FIG. 4, the length of the two leg portions 32 extending downward from the flat surface portion 31 of the first intermediate attach member 34 is about half the distance from the flat surface portion 31 to the upper surface portion 81. One or more second intermediate attach members 35 are attached to the first intermediate attach member 34 so as to support the first intermediate attach member 34, but the second intermediate attach members 35 are sufficiently spaced from each other. Since it is arranged, the leg portion 32 is extended downward from the flat surface portion 31 until it comes into contact with the upper surface portion 81, and the flat surface portion 31 is supported by the leg portion 32 without providing the second intermediate attach member 35. The cost required for the intermediate attachment member 3 can be reduced as compared with the case where.

The intermediate groove portion 86 is an area where the boundary between the inner shoji 71 on which the door roller 73 is mounted on the inner rail 82 and the outer shoji 72 on which the door roller 74 is mounted on the outer rail 83 is located. When the opening 12 is closed by the internal sash 71 and the external sash 72, even if the gap between the boundaries between the internal sash 71 and the external sash 72 is closed, the gap through the intermediate groove 86 is passed through. Outdoor winds may blow into the room. Therefore, when the internal sash 71 and the external sash 72 are closed, it is possible to prevent the wind from blowing into the room from the intermediate groove portion 86 into the intermediate groove portion 86 of the combined region portion where the internal sash 71 and a part of the external sash 72 overlap. A windbreak member for the purpose may be installed. When such a wind blocking member is provided in the intermediate groove portion 86, the intermediate attaching member 3 is divided in the longitudinal direction so as to avoid the wind blocking member, and is divided into the left and right sides of the wind blocking member, respectively. It may be configured so that the intermediate attachment member 3 can be attached. However, since the height positions of the lower ends of the lower stile 75 and the lower stile 76 are lower than the height positions of the upper ends of the inner rail 82 and the outer rail 83, respectively, the existing inner sash 71 and the outer sash 72 are inside. The windbreak member attached to the intermediate groove 86 for the shoji 71 and the outer shoji 72 has a height position at the upper end lower than that of the floor surface 13 in the room, and the upper surface is not flat and has slopes and steps. It may be provided. When the intermediate attach member 3 is attached to the intermediate groove portion 86 while leaving such a wind blocking member in the intermediate groove portion 86, the flatness of the flat surface portion 31 substantially flush with the floor surface 13 in the room formed in the intermediate groove portion 86. However, it will be interrupted at the windbreak member part. Therefore, when the new inner sash 51 and the new outer sash 52 as described later are provided after the sash lower frame attachment 1 is attached to the existing sash lower frame 8, if a windbreak member is required, the existing windbreaker is used. By removing the members, the intermediate attachment member 3 is provided with a wind blocking member for the new internal sash 51 and the new external sash 52 whose upper surface is substantially flush with the floor surface 13 in the room. It may be divided and provided so as to avoid this new windbreak member. Further, regardless of the wind blocking member, the intermediate attach member 3 may be provided separately, for example, when the length of the intermediate groove portion 86 in the longitudinal direction is long.

The outer attach member 4 is attached to the outer groove portion 87. As described above, the inner attachment member 2 is detachably attached to the inner groove portion 85, and the intermediate attach member 3 is detachably attached to the intermediate groove portion 86, but the outer groove portion 87 is attached to the inner groove portion 85 and the intermediate groove portion 86. However, since the partition wall is not provided on the outdoor side, the outer attach member 4 is fixed to the outer groove 87 so that the outer attach member 4 attached to the outer groove 87 does not fall off from the outdoor side. There is. However, when a side wall similar to the side wall 84 provided on the indoor side of the inner groove 85 is provided on the outdoor side of the outer groove 87, the same as the inner attach member 2 and the intermediate attach member 3 , The outer attach member 4 may be configured to be detachably attached to the outer groove portion 87.

In the present embodiment, the outer attach member 4 is composed of a first outer attach member 41 and a second outer attach member 47, as shown in FIG. The first outer attach member 41 and the second outer attach member 47 are longitudinal members having substantially the same cross-sectional shape extending along the longitudinal direction of the outer groove portion 87, respectively.

The first outer attachment member 41 includes a substrate portion 42 mounted on the upper surface portion 81 of the outer groove portion 87, a standing plate portion 43 rising upward from the substrate portion 42, and an attachment portion for attaching the second outer attachment member 47. It is equipped with 44.

The substrate portion 42 is a plate-shaped portion that covers the upper surface portion 81 of the outer groove portion 87. In the present embodiment, since the existing screen door rail 89 is provided on the outdoor end side of the upper surface portion 81 of the outer groove portion 87, the substrate portion 42 is mounted on the upper surface portion 81 of the outer groove portion 87 on the substrate portion 42. A groove portion 421 capable of accommodating the existing screen door rail 89 is provided so as not to be interfered with by the existing screen door rail 89 when the screen door rail 89 is placed. Therefore, the cross-sectional shape of the substrate portion 42 extends from the vicinity of the base end portion of the outer rail 83 to the outdoor side along the upper surface portion 81, and a substantially inverted U-shaped groove portion 421 is formed at the portion of the existing screen door rail 89. The shape is such that it extends to the outdoor side again along the upper surface portion 81.

The standing plate portion 43 is a plate-shaped portion that rises upward from the substrate portion 42, and in the present embodiment, the upper end portion of the standing plate portion 43 is used as a rail for a screen door. Therefore, when the first outer attach member 41 is attached to the outer groove portion 87, the standing plate portion 43 is substantially parallel to the outer rail 83, and the height position of the upper end of the standing plate portion 43 is the floor surface 13 in the room. It is designed to be approximately equal to the height position of. Further, in the present embodiment, the position in the cross-sectional direction of the existing screen door rail 89 and the position in the cross-sectional direction of the rail of the screen door newly provided by the upper end portion of the standing plate portion 43 are substantially equal to each other. The plate portion 43 rises upward from the top of the groove portion 421 of the substrate portion 42.

The attachment portion 44 is provided on the side surface of the outer rail 83 of the standing plate portion 43, and is a portion for attaching the second outer attach member 47 to the first outer attach member 41. In the present embodiment, a strip-shaped horizontal portion extending substantially horizontally from the middle portion in the height direction of the standing plate portion 43 toward the outer rail 83, and the horizontal portion provided on the extending tip side of the horizontal portion. It is composed of a strip-shaped vertical portion substantially perpendicular to the vertical portion, and a gap having a width through which a screw can be inserted is provided between the vertical portion of the mounting portion 44 and the outer rail 83.

The first outer attachment member 41 is mounted on the upper surface portion 81 with the mounting portion 44 facing the outer rail 83 side so as to cover the upper surface portion 81 of the outer groove portion 87, and then the mounting portion 44. The substrate portion 42 is fixed to the outer groove portion 87 by screwing the substrate portion 42 to the upper surface portion 81 through a screw provided between the outer rail 83 and the outer rail 83.

Further, in the present embodiment, the first outer attach member 41 has a strip-like shape extending substantially horizontally toward the outdoor side from a position slightly lower than the upper end of the standing plate portion 43 on the outdoor side of the standing plate portion 43. A locking portion 45 including a horizontal portion and a locking piece portion extending downward from the extending tip side of the horizontal portion is provided. As for the height position of the horizontal portion of the locking portion 45, since the upper end portion of the standing plate portion 43 is a rail for the screen door, the door roller and the lower end portion of the screen door provided at the upper end of the standing plate portion 43 do not interfere with each other. It is in a high position. Further, the substrate portion 42 on the outdoor side of the groove portion 421 extends substantially horizontally toward the outdoor side, and the distance of the extension tip side of the substrate portion 42 on the outdoor side from the standing plate portion 43 is the locking portion 45. The distance from the vertical plate portion 43 of the extension tip side of the horizontal portion is substantially equal to that of the vertical plate portion 43, and the locking piece 46 extends upward from the extension tip side of the substrate portion 42 on the outdoor side. The locking piece portion and the locking piece 46 of the locking portion 45 are provided so as to face each other at positions where the distances from the standing plate portion 43 are substantially equal to each other, and the locking piece portion and the locking piece 46 of the locking portion 45 are locked. Various adapters and the like can be attached to the first outer attachment member 41 by using the piece 46. For example, as shown in FIG. 5, an outdoor floor continuous with the lower side of the opening 12 on the outdoor side of the opening 12. When it is desired to form the 18, an auxiliary adapter or the like for providing the outdoor floor 18 can be attached.

The second outer attachment member 47 includes an engaging portion 48 that engages with the mounting portion 44, and a flat surface portion 49 that is substantially flush with the floor surface 13 in the room in a state where the outer attaching member 4 is attached to the outer groove portion 87. To be equipped. The second outer attach member 47 is adapted to be attached to the first outer attach member 41 in a state of being fixed to the upper surface portion 81 of the outer groove portion 87, and the engaging portion 48 is engaged with the attachment portion 44. It can be attached by letting it. By fixing the first outer attach member 41 to the upper surface portion 81 of the outer groove portion 87 and attaching the second outer attach member 47 to the first outer attach member 41, the outer attach member 4 is attached to the outer groove portion 87.

The flat surface portion 49 is substantially flush with the floor surface 13 in the room when the outer attachment member 4 is attached to the outer groove portion 87, and is a substantially rectangular shape long in the longitudinal direction of the outer groove portion 87. A gap of a predetermined interval is provided between the flat surface portion 49 and the outer rail 83. Further, in the present embodiment, since the upper end portion of the standing plate portion 43 is used as a rail for a new screen door, the flat surface portion 49 is provided so that the door roller and the lower end portion of the screen door provided at the upper end of the standing plate portion 43 do not interfere with each other. A gap of a predetermined distance is also provided between the vertical plate portion 43 and the vertical plate portion 43, and the flat surface portion 49 is located between the outer rail 83 and the vertical plate portion 43. If it is not necessary to provide a new rail for the screen door, the height position of the upper end of the standing plate portion 43 is set lower than the height position of the floor surface 13 in the room, and the flat surface portion 49 is set to the outdoor side. You may try to extend it.

When the outer attach member 4 is composed of one member by integrating the first outer attach member 41 and the second outer attach member 47, a flat surface portion is used to fix the outer attach member 4 to the upper surface portion 81. Since it is necessary to provide a gap having a width through which a screw can be inserted between the 49 and the outer rail 83, the flat surface portion 49 may be smaller than a desired size, but in the present embodiment, the outer attachment member 4 is composed of two members, a first outer attach member 41 and a second outer attach member 47, with respect to the first outer attach member 41 fixed to the upper surface portion 81 of the outer groove portion 87, and the floor in the room. Since the second outer attach member 47 having the flat surface portion 49 substantially flush with the surface 13 is attached, the flat surface portion 49 having a desired size can be formed in the outer groove portion 87.

Since the first outer attachment member 41 is fixed to the outer groove portion 87 by fixing the substrate portion 42 to the upper surface portion 81 of the outer groove portion 87 with screws, the upper surface portion 81 of the outer groove portion 87 is fixed to the upper surface portion 81 by screws. A hole will be made. Although screws are fixed in the holes formed in the upper surface portion 81 by screwing, it cannot be said that there is a possibility that water such as rain may seep into the lower part of the upper surface portion 81 through a slight gap. However, as shown in FIG. 4, the outdoor side member 92 constituting the outdoor side of the existing sash lower frame 8 according to the present embodiment has a hollow space 94 formed in the lower part of the upper surface portion 81, and is screwed. The tip of the is designed to stop in the hollow space 94. Since the floor surface of the hollow space 94 is inclined downward toward the outdoor side, when water seeps into the hollow space 94, the water flows to the outdoor side along the floor surface. There is. Therefore, only by providing a drainage hole 95 penetrating to the hollow space 94 on the outdoor side surface of the outdoor side member 92, if the hole of the screw formed in the upper surface portion 81 is provided in the hollow space 94 below the upper surface portion 81. Even if water seeps in, the water can be discharged to the outside through the drainage hole 95.

As described above, the sash lower frame attachment 1 is attached to the inner groove portion 85, the intermediate groove portion 86, and the outer groove portion 87 formed in the existing sash lower frame 8, respectively. It includes an intermediate attach member 3 and an outer attach member 4. The inner attach member 2 includes a flat surface portion 21 that is substantially flush with the floor surface 13 in the room when attached to the inner groove portion 85, and the intermediate attach member 3 is attached to the floor surface 13 in the room when attached to the intermediate groove portion 86. The outer attachment member 4 is provided with a flat surface portion 31 that is substantially flush with the floor surface 13 of the room when attached to the outer groove portion 87, and is an attachment for a sash lower frame. By attaching 1 to the existing sash lower frame 8, the floor surface of the room is formed on the inner groove portion 85, the intermediate groove portion 86, and the outer groove portion 87, each of which has an upper surface portion 81 lower than the floor surface 13 in the room as the bottom surface. A flat surface portion 21, a flat surface portion 31, and a flat surface portion 49 that are substantially flush with 13 are formed, and there is no step from the floor surface 13 to the upper surface portion 81 in the room of each groove portion. Further, in the present embodiment, the outer attach member 4 is provided with a standing plate portion 43 whose upper end portion is used as a rail for a new screen door on the outdoor side of the flat surface portion 49 when attached to the outer groove portion 87. The height position of the upper end of the plate portion 43 is also substantially equal to the height position of the floor surface 13 in the room. Therefore, by attaching the sash lower frame attachment 1 to the existing sash lower frame 8, the floor surface 13 in the room can be extended to the outdoor end of the outer attachment member 4 provided on the outdoor side of the existing sash lower frame 8. The existing sash lower frame 8 can be made into a full flat sash by the attachment 1 for the sash lower frame, which is connected to the floor surface 13 in the room so as to be flat without a step.

When the attachment 1 for the sash lower frame is attached to the existing sash lower frame 8, between the flat surface portion 21 and the inner rail 82, between the flat surface portion 31 and the inner rail 82, and between the flat surface portion 31 and the outer rail 83. Since gaps of predetermined intervals are provided between the space and between the flat surface portion 49 and the outer rail 83, that is, on both sides of the inner rail 82 and the outer rail 83, the sash lower frame attachment 1 can be used. While attached to the existing sash lower frame 8, the door roller of the shoji can be engaged with the inner rail 82 and the outer rail 83, respectively. Therefore, according to the sash lower frame attachment 1, even after the sash lower frame attachment 1 is attached to the existing sash lower frame 8 to form a full flat sash, the inner rail 82 and the outer rail 83 of the existing sash lower frame 8 are used. Therefore, a shoji can be provided in the opening 12. In that case, the inner sash 71 and the outer sash 72 provided in the opening 12 before attaching the sash lower frame attachment 1 are the heights of the lower surfaces of the lower stile 75 and the lower stile 76, respectively, as shown in FIG. Since the vertical position is lower than the height position of the upper ends of the inner rail 82 and the outer rail 83, after attaching the sash lower frame attachment 1 to the existing sash lower frame 8, the inner groove portion 85 and the intermediate groove portion 86 Since the lower part of the inner sash 71 and the outer sash 72 interferes with the flat surface portion 21, the flat surface portion 31 and the flat surface portion 49 formed in the outer groove portion 87, the inner sash 71 and the outer sash 72 cannot be used as they are. As shown in FIG. 5, it is necessary to newly install a new internal sash 51 in place of the internal sash 71 and a new external sash 52 in place of the external sash 72.

In the new internal sash 51 and the new external sash 52, the door rollers of the new sash 51 and the new external sash 52 are guided along the inner rail 82 or the outer rail 83 by running on the inner rail 82 or the outer rail 83. It is the same as the external shoji 72. Since the same inner rail 82 and outer rail 83 are used by the new inner sash 51 and the new outer sash 52, and the inner sash 71 and the outer sash 72, the door roller 53 of the new inner sash 51 is the door sash 73 of the inner sash 71. As the door roller 54 of the new external shoji 52, the same size and equivalent as the door roller 74 of the external shoji 72 can be used. However, unlike the lower stile 75 of the inner sash 71 and the lower stile 76 of the outer sash 72, the lower stile 55 of the new internal sash 51 and the lower stile 56 of the new external sash 52 have a lower surface height position of the indoor floor surface. It is slightly higher than the height position of 13, and when the new internal sash 51 and the new external sash 52 move along the inner rail 82 or the outer rail 83, the inner groove 85 and the middle are provided by the sash lower frame attachment 1. The flat surface portion 21, the flat surface portion 31, and the flat surface portion 49 that are substantially flush with the floor surface 13 in the room formed in the groove portion 86 and the outer groove portion 87 are prevented from interfering with each other.

The door roller 53 of the new internal shoji 51 and the door roller 54 of the new external shoji 52 are provided so as to be housed inside the lower rail 55 and the lower rail 56, respectively. It is slightly higher than the height position of the floor surface 13 in the room, and the height position of the upper ends of the inner rail 82 and the outer rail 83 is substantially equal to the height position of the floor surface 13 in the room or the floor surface 13 in the room. The door roller 53 and the door roller 54 engage with the inner rail 82 and the outer rail 83 so as to partially project downward from the lower surfaces of the lower stile 55 and the lower stile 56, respectively. It has become like. As the door roller 53 of the new internal shoji 51 and the door roller 54 of the new external shoji 52, the same ones as the door roller 73 of the internal shoji 71 and the door roller 74 of the external shoji 72 can be used, and the same inner rail 82 and outer rail 83 can be used. Since it is placed on the top, the height position of the upper end of the space required to provide the door roller 53 inside the lower stile 55 of the new internal sash 51 and the door sill 54 inside the lower stile 56 of the new external sash 52. The height positions of the upper ends of the space required for the provision are the height positions of the upper ends of the space required for providing the door roller 73 inside the lower stile 75 of the inner sash 71 and the lower stile 76 of the outer sash 72, respectively. It is substantially equal to the height position of the upper end of the space required to provide the door roller 74 inside. Therefore, the lower stile 55 of the new internal sash 51 and the lower stile 56 of the new external sash 52 need to raise the height position of the lower surface as compared with the lower stile 75 of the internal sash 71 and the lower stile 76 of the external sash 72, respectively. However, since the height positions of the upper ends can be made substantially the same, the opening 12 provided with the new internal sash 51 and the new external sash 52 is compared with the opening 12 provided with the internal sash 71 and the external sash 72. However, it does not give the impression that the size of the opening 12 has become smaller.

Since there is a slight gap between the lower surfaces of the lower stile 55 and the lower stile 56 and the flat surface portion 21, the flat surface portion 31 and the flat surface portion 49, wind, rain, etc. should be blown into the room from the outside through this gap. There is a possibility. Therefore, a hanging portion 57 is provided on the lower surface of the lower stile 55, and a hanging portion 58 is provided on the lower surface of the lower stile 56. The hanging portion 57 is formed in a substantially inverted U-shape in cross section by an upper surface that abuts on the lower surface of the lower stile 55 and an outdoor side hanging lower surface and an indoor side hanging lower surface that extend downward from opposite ends of the upper surface, respectively. It is a longitudinal member extending in the longitudinal direction of the lower stile 55, and the hanging lower portion 58 includes an upper surface that abuts on the lower surface of the lower stile 56 and an outdoor side hanging lower surface that extends downward from opposite ends of the upper surface. It is a longitudinal member extending in the longitudinal direction of the lower stile 56 formed in a substantially inverted U-shape in cross section by the hanging lower surface on the indoor side. The height positions of the lower ends of the outdoor side hanging surface and the indoor side hanging surface of the hanging portion 57 are lower than the height positions of the upper ends of the inner rail 82, and the outdoor side hanging surface and the indoor side hanging surface of the hanging portion 57 are lower. The upper part of the inner rail 82 is sandwiched between the two. Further, the height positions of the lower ends of the outdoor side hanging surface and the indoor side hanging surface of the hanging portion 58 are lower than the height positions of the upper ends of the outer rail 83, and the outdoor side hanging surface and the indoor side of the hanging portion 58. The upper part of the outer rail 83 is sandwiched between the hanging lower surfaces. Therefore, the hanging portion 57 and the hanging portion 58 can prevent rain, wind, or the like from entering from the outdoor side to the indoor side on the lower side of the new internal sash 51 and the new external sash 52.

As described above, the newly installed internal sash 51 and the new external sash 52 are provided with a hanging portion 57 and a hanging portion 58 having an outdoor side hanging lower surface and an indoor side hanging lower surface extending downward from the lower surfaces of the lower stile 55 and the lower stile 56, respectively. Therefore, the height positions of the lower ends of the hanging portion 57 and the hanging portion 58 are lower than the height positions of the upper ends of the inner rail 82 and the outer rail 83, respectively. Therefore, it is provided between the flat surface portion 21 and the inner rail 82, between the flat surface portion 31 and the inner rail 82, between the flat surface portion 31 and the outer rail 83, and between the flat surface portion 49 and the outer rail 83, respectively. The gap can be provided with the hanging portion 57 and the hanging portion 58, and when the new internal obstacle 51 and the new external obstacle 52 move along the inner rail 82 and the outer rail 83, respectively, the hanging portion 57 and the hanging portion are provided. The intervals are such that 58 does not interfere. In order to enhance the continuity of the lower side of the opening 12 from the floor surface 13 in the room obtained by making the existing sash lower frame 8 into a full flat sash by the sash lower frame attachment 1, the distance between these gaps should be as narrow as possible. Is preferable.

In the present embodiment, the opening 12 is provided with two sashes, an internal sash 71 and an external sash 72, and the existing sash lower frame 8 has an inner rail 82 for guiding the internal sash 71 and the external sash 72, and an inner rail 82. An example is shown in which two rails of the outer rail 83 are provided, but the opening 12 is provided with a shoji for opening and closing three or more openings 12, and the existing sash lower frame 8 is provided with each shoji. When three or more rails are provided corresponding to the above, the groove on the indoor side corresponding to the inner groove 85 formed in the existing sash lower frame 8 and the groove on the outdoor side corresponding to the outer groove 87. The sash lower frame attachment 1 is provided with an attachment member attached to each groove between the rails and the groove between the rails corresponding to the intermediate groove 86, which is one less than the number of rails. Form a flat surface that is flush with each other. Further, for example, a door pocket capable of storing a sash is provided in the outer wall 11 opened on the side side of the opening 12, so that only one sash for opening and closing the opening 12 is provided in the opening 12. When the existing sash lower frame 8 is provided with only one rail for guiding the shoji, it corresponds to the inner groove portion 85 and the outer groove portion 87 formed in the existing sash lower frame 8. The sash lower frame attachment 1 includes two attachment members that are attached to the two grooves. As described above, the sash lower frame attachment 1 may be configured to include an attachment member corresponding to each groove according to the groove formed in the existing sash lower frame 8.

Next, a method of reforming the existing sash lower frame 8 using the sash lower frame attachment 1 according to the present embodiment will be described. The sash lower frame attachment 1 has an opening 12 that opens up to the height position of the floor surface 13 of the room formed on the outer wall 11 that separates the inside and the outside of the existing house, as shown in FIGS. 1 and 2. It is used to make the existing sash lower frame 8 provided on the lower side into a full flat sash by reforming. In the present embodiment, as shown in FIG. 2, the existing sash lower frame 8 has an inner rail 82 and an outer rail 82 extending along the longitudinal direction of the lower side of the opening 12 substantially parallel to each other so as to project upward from the upper surface portion 81. The existing sash lower frame 8 is provided with a rail 83, and an inner groove portion 85, an intermediate groove portion 86, and an outer groove portion 87 are formed by an upper surface portion 81, an inner rail 82, and an outer rail 83. The inner rail 82 and the outer rail 83 are provided with an inner sash 71 and an outer sash 72, respectively, and cover members 97 and 98 are attached to the inner groove portion 85 and the intermediate groove portion 86, respectively. Further, in the intermediate groove portion 86, a windbreak member may be attached to the combined region portion of the inner rail 82 and the outer rail 83.

When reforming the existing sash lower frame 8 with the sash lower frame attachment 1, first, the inner sash 71 and the outer sash 72 attached to the existing sash lower frame 8 as shown in FIG. 2, and the cover member 97, 98 is removed, and if a windbreak member is provided in the intermediate groove portion 86, the windbreak member is also removed, and as shown in FIG. 3, the inner groove portion 85, the intermediate groove portion 86, and the intermediate groove portion 86 of the existing sash lower frame 8 are removed. Make sure that nothing is attached to the outer groove 87. After that, as shown in FIG. 4, the inner attachment member 2, the intermediate attachment member 3, and the outer attachment member 4 of the sash lower frame attachment 1 are attached to the inner groove portion 85, the intermediate groove portion 86, and the outer groove portion 87, respectively.

When attaching the inner attach member 2 to the inner groove portion 85, the flat surface portion 21 of the inner attach member 2 is attached so as to be on the upper side, and the inner attach member 2 is fitted into the inner groove portion 85 from above, and the flat surface portion 21 is attached. Make it substantially flush with the floor surface 13 in the room. When attaching the intermediate attach member 3 to the intermediate groove portion 86, one or more second intermediate attach members 35 are attached to the lower part of the first intermediate attach member 34 so that the flat surface portion 31 of the intermediate attach member 3 is on the upper side. Then, the intermediate attach member 3 is attached to the intermediate groove portion 86 so as to be fitted from above so that the flat surface portion 31 is substantially flush with the floor surface 13 in the room. If a windbreak member is required for the new internal sash 51 and new external sash 52 that are newly provided after the remodeling with the sash lower frame attachment 1, the combined area of the new internal sash 51 and the new external sash 52 A wind blocking member whose upper surface is substantially flush with the floor surface 13 in the room is attached to the intermediate groove portion 86, and the intermediate attachment member 3 divided so as to avoid the wind blocking member is attached to the intermediate groove portion 86. When attaching the outer attachment member 4 to the outer groove portion 87, first, the substrate portion 42 of the first outer attachment member 41 is placed on the upper surface portion 81 of the outer groove portion 87, and the substrate portion 42 is screwed to the upper surface portion 81. By doing so, the first outer attach member 41 is fixed to the outer groove portion 87, and then the engaging portion 48 of the second outer attach member 47 is engaged with the attachment portion 44 of the first outer attach member 41. The second outer attach member 47 is attached to the outer attach member 41 so that the flat surface portion 49 of the second outer attach member 47 is substantially flush with the floor surface 13 in the room.

The first outer attach member 41 is fixed to the outer groove 87 by screwing the substrate portion 42 of the first outer attach member 41 to the upper surface portion 81 of the outer groove 87. As shown in FIG. 4, the outer groove portion When a hollow space 94 having a floor surface inclined downward toward the outdoor side is formed in the lower part of the upper surface portion 81 of the 87, as a screw for fixing the substrate portion 42 and the upper surface portion 81 with screws, A screw having a length that allows the tip of the screw to stay in the hollow space 94 is used, and the side surface of the existing sash lower frame 8 that separates the hollow space 94 from the outside is used for draining water so that the hollow space 94 and the outside are communicated with each other. A hole 95 is provided.

The sash lower frame attachment 1 is attached to the existing sash lower frame 8, and the inner groove portion 85, the intermediate groove portion 86, and the outer groove portion 87 are provided with a flat surface portion 21 and a flat surface portion 31 that are substantially flush with the floor surface 13 in the room. And the flat surface portion 49 is formed. A gap of a predetermined distance is provided between the flat surface portion 21, the flat surface portion 31 and the flat surface portion 49, and the inner rail 82 and the outer rail 83, respectively, and a new new inner sash 51 and a new outer sash 51 are provided. When the 52 is provided in the opening 12, as shown in FIG. 5, the inner rail 82 and the outer rail 83 of the existing sash lower frame 8 can be used without providing a new rail.

As described above, the sash lower frame attachment 1 has the inner groove portion 85, the intermediate groove portion 86, and the outer groove portion 87 formed in the existing sash lower frame 8 by the inner rail 82 and the outer rail 83 for guiding the shoji. On the other hand, an inner attachment member 2, an intermediate attachment member 3, and an outer attachment member 4 are provided, respectively, and the sash lower frame attachment 1 allows each groove to have a flat surface portion 21 and a flat surface portion substantially equal to the floor surface 13 in the room. 31 and a flat surface portion 49 are formed, and the existing sash lower frame 8 is made into a full flat sash.

The inner attachment member 2 and the intermediate attachment member 3 are attached to the inner groove portion 85 and the intermediate groove portion 86, respectively, excluding the outer groove portion 87, which is the most outdoor side groove portion, but they can be attached by simply fitting them without the need for tools or the like. Therefore, it is removable and easy to install. Further, since the inner groove portion 85 and the upper surface portion 81 of the intermediate groove portion 86 are not bored by the attachment of the inner attach member 2 and the intermediate attach member 3, the inner attach member 2 and the intermediate attach member 3 are attached. The water that has entered the inner groove portion 85 and the intermediate groove portion 86 later flows over the upper surface portion 81 of the existing sash lower frame 8 and is discharged to the outdoor side without newly applying water storage.

Further, the outer attachment member 4 is attached to the outer groove portion 87 which is the most outdoor side groove portion, but the outer attachment member 4 has the first outer attachment member 41 on the outside so as not to fall off from the outdoor side of the outer groove portion 87. The second outer attach member 47 is detachably attached to the first outer attach member 41 fixed to the groove 87 and fixed to the outer groove 87. Since the first outer attachment member 41 is fixed by screwing the substrate portion 42 to the upper surface portion 81 of the outer groove portion 87, a hole is formed in the upper surface portion 81 of the outer groove portion 87 by screwing. However, since a screw is screwed into this hole, most of the water that has entered the outer groove portion 87 flows over the substrate portion 42 and the upper surface portion 81 of the existing sash lower frame 8 and is discharged to the outdoor side. NS. Even if water slightly infiltrates into the hollow space 94 below the upper surface portion 81 from the screwed hole, it is discharged to the outdoor side from the drainage hole 95. In this way, although the first outer attach member 41 is fixed to the outer groove portion 87, the construction is easy because the substrate portion 42 and the upper surface portion 81 are only screwed together, and the water drainage is also for draining water. It is easy because it is only necessary to provide the hole 95.

As described above, by using the sash lower frame attachment 1 according to the present embodiment, the existing sash lower frame provided on the lower side of the opening 12 which is the sweep-out window formed on the outer wall 11 of the existing house. 8 can be easily converted into a full flat sash by reforming. As shown in FIGS. 5 and 6, on the outdoor side of the opening 12 provided with the existing sash lower frame 8 which has been made into a full flat sash by the sash lower frame attachment 1, the height position of the floor surface 13 in the room and the height position of the floor surface 13 in the room. If the outdoor floor 18 such as a deck or a terrace is provided so as to have substantially the same height position, the floor surface 13 of the room to the floor surface of the outdoor floor 18 are substantially flush with each other through the lower side of the opening 12. Therefore, the outdoor floor 18 can be made into a semi-outdoor space that makes the indoor space feel as if it is spatially expanded and also gives a feeling of continuous openness from the indoor to the outdoor. Therefore, even in an existing house, a semi-outdoor space can be easily provided by remodeling using the sash lower frame attachment 1.

1 Attachment for sash lower frame 11 Outer wall 12 Opening 13 Indoor floor 18 Outdoor floor 2 Inner attachment member (attach member)
21 Flat surface 3 Intermediate attach member (attach member)
31 Flat surface part 4 Outer attach member (attach member)
49 Flat surface 51 New internal shoji (new shoji)
52 New external shoji (new shoji)
71 Internal shoji ((existing) shoji)
72 External shoji ((existing) shoji)
8 Existing sash lower frame 81 Upper surface 82 Inner rail (rail)
83 Outer rail (rail)
85 Inner groove (groove)
86 Intermediate groove (groove)
87 Outer groove (groove)

Claims (7)

It is an attachment for the sash lower frame that is attached to the existing sash lower frame provided at the lower side of the opening formed in the outer wall that separates the interior and the outside of the existing house.
The existing sash lower frame is
An upper surface portion that covers the lower side at a position lower than the height position of the floor surface in the room, and
Guide the shoji that opens and closes the opening provided in the upper surface portion so that the upper end is at a position substantially equal to the height position of the floor surface in the room or a position lower than the height position of the floor surface in the room. With at least one rail for
At least two grooves having the upper surface as the bottom surface formed by the upper surface and the at least one rail.
With
The attachment for the lower frame of the sash is
It consists of a plurality of attachment members attached to each of the grooves.
An attachment for a sash lower frame, wherein each attachment member has a flat surface portion having a height position substantially equal to the height position of the floor surface in the room when attached to the corresponding groove portion. The attachment for a sash lower frame according to claim 1, wherein each of the attachment members is detachably attached to the corresponding groove. The attachment for a sash lower frame according to claim 1 or 2, wherein the attachment member attached to the groove on the most outdoor side is fixed to the groove. Any of claims 1 to 3, wherein when each of the attachment members is attached to the corresponding groove, a gap of a predetermined distance is provided between each of the flat surfaces and the at least one rail. Attachment for the lower frame of the sash described in item 1. Using the sash lower frame attachment according to any one of claims 1 to 4, the existing sash lower frame provided on the lower side of the opening formed in the outer wall that separates the indoor and outdoor parts of the existing house is used. It ’s a way to remodel
An upper surface portion that covers the lower side at a position lower than the height position of the floor surface in the room, and
Guide the shoji that opens and closes the opening provided in the upper surface portion so that the upper end is at a position substantially equal to the height position of the floor surface in the room or a position lower than the height position of the floor surface in the room. With at least one rail for
At least two grooves having the upper surface as the bottom surface formed by the upper surface and the at least one rail.
For each groove portion of the existing sash lower frame provided with
A remodeling method characterized in that by attaching each of the attachment members of the sash lower frame attachment, a flat surface portion having a height position substantially equal to the height position of the floor surface in the room is formed in each of the groove portions. An outdoor floor having a height position substantially equal to the height position of the floor surface in the room is provided on the outdoor side of the opening, and the lower side of the opening is provided from the floor surface in the room to the floor surface of the outdoor floor. The reform method according to claim 5, wherein the remodeling method is made substantially flush with each other. A gap of a predetermined distance is provided between each of the flat surfaces and the at least one rail.
The remodeling method according to claim 5 or 6, wherein the opening is provided with a new shoji that is guided by at least one rail.

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