JP2020176519A - sash - Google Patents

Abstract

To restrain a convection of air transferred with cold into an indoor space and improve thermal insulation performance.SOLUTION: A sash comprises: a frame body fixed to a building opening; and a paper sliding door supported in an openable manner to the frame body. The frame body comprises: an upper member formed of a metal material and mounted to an inner periphery of the building opening; and a resin upper member arranged in an inner periphery of the upper member. The upper member has a suspension piece suspended downward from a lower surface to guide an inner paper sliding door. On the lower surface of the resin upper member at the indoor side of the suspension piece for guiding the inner paper sliding door, a separate member deforming in erecting of the paper sliding door and restoring after the erecting is completed is provided.SELECTED DRAWING: Figure 4

Description

The present invention relates to a heat insulating sash installed at an opening of a building.

Conventionally, the sash installed in the opening of a building is required to have heat insulating properties. By connecting the indoor side member and the outdoor side member with a heat insulating member, the frame body can generate heat both indoors and outdoors. Sliding insulation sashes that prevent transmission are known.
Further, there is also known a composite heat insulating sash in which the indoor side portion of the frame body and the frame body is formed of a resin profile to improve the heat insulating performance.
Then, in the sliding type heat insulating sash, the outer guide rail of the outdoor member and the inner guide rail of the indoor member are covered with a resin cover member, and a shielding member is provided on the outdoor side of the inner guide rail. It has been known that a heat insulating sash is provided to prevent the guide rail from being directly exposed to outside air or the like to improve the heat insulating performance (Patent Document 1).

Japanese Unexamined Patent Publication No. 2001-55869

Normally, in a sliding sash, the shoji and the frame are sealed with a tight material to block the outdoor and indoor spaces, but the air to which cold heat is transmitted via the guide rail etc. is the air between the shoji and the frame. By convection in the space between them, cold heat was transmitted to the indoor space, which led to a decrease in heat insulation performance. In particular, between the upper surface of the shoji and the inner peripheral surface of the upper frame, it is necessary to secure a large space for the convenience of securing the upright dimension by Kendon, and since the shoji is slid to move, the shoji, the frame and the tight material There was also a limit to the contact of the shoji, and the transfer of cold heat by air convection in the large space between the upper surface of the shoji and the inner peripheral surface of the upper frame was not negligible.
In the heat insulating sash of Patent Document 1, the heat insulating performance is improved by suppressing the direct outside air from directly hitting the guide rail of the indoor side member by providing the shielding member, but the upper surface of the shoji and the inner circumference of the upper frame The transfer of cold heat by convection of air in the space between the surfaces was not considered.
Therefore, the cold heat transmitted from the outside to the outdoor member is transmitted to the air as radiant heat from the indoor surface of the guide rail of the outdoor member, and further transferred to the room by the convection of air in the space between the shoji and the frame. There was a possibility that it would end up.
Further, in the composite heat insulating sash in which the indoor side part of the frame is formed of the resin profile, the cold heat transmitted through the screws for fixing the resin profile is the space between the shoji and the frame. There was a possibility that it would be transmitted indoors due to the convection of the air.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a heat insulating sash capable of suppressing convection of air to which cold heat is transmitted to an indoor space and improving heat insulating performance. ..

One embodiment of the present invention includes a frame body fixed to the building opening and a shoji sash that is openably and closably supported by the frame body, and the frame body is formed of a metal material and attached to the inner circumference of the building opening. The upper member is provided with a resin upper member arranged on the inner circumference of the upper member, and the upper member has a hanging piece that hangs downward from the lower surface to guide the internal sash and guides the internal sash. The lower surface of the resin upper member on the indoor side is a sash provided with a separate member that deforms when the shoji is erected and is restored after the erection is completed.

According to the sash of one embodiment, it is possible to suppress the convection of the air to which the cold heat is transmitted to the indoor space and improve the heat insulating performance.

It is a vertical sectional view of the heat insulating sash which concerns on 1st Embodiment of this invention. It is sectional drawing of the heat insulation sash which concerns on 1st Embodiment of this invention. It is a top view which looked at the combined part of the upper frame of the heat insulating sash of this invention from the bottom. It is an enlarged vertical sectional view of the upper frame part of the heat insulating sash which concerns on 1st Embodiment of this invention. It is an enlarged vertical sectional view of the upper frame part of the heat insulating sash which concerns on 2nd Embodiment of this invention. It is a perspective view explaining the side surface of the lower corner part of a frame body in which the protruding part of the heat insulating sash which concerns on embodiment of this invention is close.

The configuration of the heat insulating sash according to the embodiment of the present invention will be described with reference to the drawings.
(Overall composition)
The heat insulating sash according to the embodiment of the present invention is installed in a building opening, and has a frame body 1 in which an upper frame 11, a lower frame 12, and right and left vertical frames 13 and 14 are assembled in four directions, and upper frames 21, 31 and. The lower stiles 22 and 32 and the left and right vertical stiles (door tip stiles 23 and 34 and the combination stiles 24 and 33) are assembled in four circumferences, and the panel body is fitted in the inner circumference. The inner and outer sashes 2 and 3 are movably supported in the left-right direction along the inner and outer guide rails formed on the frame body 1, thereby forming a sliding window.
The heat insulating sash of the present invention is not limited to the sliding window, and any type of heat insulating sash such as a single sliding window can be used as long as the shoji is slid sideways with respect to the window frame to open and close. You may.

− Embodiment −
The heat insulating sash of the first embodiment of the present invention will be described with reference to FIGS. 1 to 4.
(Structure of frame)
The upper frame 11 is a connection made of a heat insulating material such as resin that connects the outdoor upper member 111 and the indoor upper member 112 formed of a metal material such as aluminum, and the outdoor upper member 111 and the indoor upper member 112. It is composed of a member 113 and a resin upper member 114 made of resin which is arranged and fixed on the inner circumference of the lower surface of the indoor upper member 112.
An outer guide rail (guide rail) 111a for guiding the outer sash 3 is hung on the lower surface of the outdoor upper member 111 near the outdoor side, and an inner sash is hung on the lower surface of the outdoor end of the indoor upper member 112. An inner guide rail (guide rail) 112a for guiding 2 is hung.

The resin upper member 114 includes an outdoor wall portion 114a that covers the indoor surface of the inner guide rail 112a of the indoor upper member 112, an upper wall portion 114b that covers the lower surface of the indoor upper member 112, and an indoor end of the upper wall portion 114b. It is composed of an indoor wall portion 114c that hangs down further and a forehead portion 114d that extends from the lower end of the indoor wall portion 114c to the indoor side.
Then, in a state where the upper wall portion 114b of the resin upper member 114 is engaged with the indoor upper member 112, it is firmly fixed to the opening of the building by fixing it at a plurality of locations from the inner peripheral side with screws g or the like penetrating both of them. It is installed.

Between the outer guide rail 111a and the inner guide rail 112a, a resin inter-rail upper cover 51 that covers the lower surface of the outdoor outer upper member 111 is arranged.
The rail-to-rail upper cover 51 is configured as a substantially flat plate-shaped long member having a length substantially half that of the upper frame 11, and is a windbreak plate installed at least above the mating portion of the upper frame 11. It is arranged between d and the left vertical frame 14 to prevent cold heat from being transmitted into the room from the lower surface of the outdoor upper member 111 exposed indoors when the inner and outer sashes 2 and 3 are closed. ..

Then, the lower surface of the inter-rail upper cover 51 on the indoor side of the outer guide rail 111a and the lower surface of the upper wall portion 114b of the resin upper member 114 on the indoor side of the inner guide rail 112a have a fin-like shape of a soft material such as a soft resin. The protruding portions 71 and 72 hang down while being inclined so as to be on the indoor side as they go downward, and are provided so as to be close to or in contact with the outer and upper surfaces of the internal obstacles 2 and 3.

Since the protrusions 71 and 72 are formed of a soft material so as to be deformable and reconstructable, the fin-shaped protrusions 71 and 72 are easily deformed when the inner and outer shoji 2 and 3 are erected with Kendon. The upright work can be performed smoothly. In addition, after construction, the lower ends of the protrusions 71 and 72 can be restored to their original shape so that they can be brought close to or in contact with the inner and upper surfaces of the outer sashes 2 and 3, so that the inner and inner and outer sashes of the upper frame 11 can be brought into contact with each other. The protrusions 71 and 72 can block at least a part of the space after the building is completed, while ensuring a sufficient space between the two or three upper surfaces so that the shoji can be built.

As a result, the space between the inner peripheral surface of the upper frame 11 and the upper surfaces of the outer and inner shoji 2 and 3 on the indoor side of the outer and inner guide rails 111a and 112a is separated from the indoor space, and the outer and inner guide rails 111a and 112a are separated. The air to which cold heat is transmitted from the side of the room is suppressed from convection flowing into the room through the space.

Further, since the protruding portions 71 and 72 are hung while being inclined so as to be closer to the indoor side toward the lower side, the shoji is deformed uniformly over the entire length in the longitudinal direction when the shoji is built, and twisting or the like is performed in the middle. Can be prevented from occurring, and a good proximity or contact state can be maintained at the time of restoration.

The fin-shaped protrusions 71 and 72 can be formed as a soft resin by being integrally molded with the resin profile of the inter-rail upper cover 51 or the resin upper member 114, but only the fin-shaped protrusions 71 and 72 are formed. Can be formed as a separate body and attached to the inter-rail upper cover 51 or the resin upper member 114 by an engaging means or the like. Further, the projecting portions 71 and 72 may be a hard fin member supported so as to swing by a semicircular hollow portion or a hinge portion formed of a soft material, or may be provided on the upper surface of the shoji. .. In addition, there is no particular limitation as long as it is a member that deforms when the shoji is erected and is restored after the erection is completed.

On the outer side of the lower end of the indoor wall portion 114c of the resin upper member 114, a protruding portion 81 is provided so as to be close to the indoor side surface of the upper stile 21 of the inner sash 2. The projecting portion 81 is formed as a fin piece integrally formed with the resin upper member 114, separates the space on the upper surface of the inner shoji 2 from the indoor space, and fixes the inner guide rail 112a and the resin upper member 114. The air to which cold heat is transmitted through the screw g is convected between the upper surface of the shoji 2 and the lower surface of the upper frame 11 and is prevented from flowing into the room.
Since the space on the upper surface of the inner shoji 2 is separated from the indoor space by the protruding portion 81 and the convection of air is suppressed, not only the cold heat transmitted by the inner guide rail 112a but also the screw g for fixing the resin upper member 114 transmits. It is possible to suppress the cold heat to be generated, and it is possible to obtain further good heat insulation performance. Further, by forming the fin-shaped protrusions 72 and 81 on the resin upper member 114, it is possible to form a space surrounded by the resin material by the resin portions of the frame and the shoji and the protrusions 72 and 81. , The heat insulating property can be improved.

The lower frame 12 is a connection made of a heat insulating material such as resin that connects the outdoor lower member 121 and the indoor lower member 122 formed of a metal material such as aluminum, and the outdoor lower member 121 and the indoor lower member 122. It is composed of a member 123 and a resin lower member 124 made of resin which is arranged and fixed on the inner circumference of the upper surface of the indoor lower member 122.
An outer guide rail 121a for guiding the outer shoji is provided on the upper surface of the outdoor lower member 121 near the outdoor side, and an inner guide rail 122a for guiding the inner shoji is provided from the outdoor end of the indoor lower member 122. ..
Between the outer guide rail 121a and the inner guide rail 122a, a resin-made lower rail cover 52 that covers the upper surface of the outdoor lower member 121 is arranged.

The rail-to-rail lower cover 52 is configured as a substantially flat plate-shaped long member having a length substantially half that of the lower frame 12, and is a combination block installed at least below the mating portion of the lower frame 12. It is arranged between (not shown) and the left vertical frame 14, and suppresses the transfer of cold heat into the room from the upper surface of the outdoor lower member 121 that is exposed indoors when the inner and outer shoji 2 and 3 are closed. doing.

The resin lower member 124 includes a bottom wall portion 124a that covers the upper surface of the indoor lower member 122, an indoor wall portion 124b that extends above the indoor side end of the bottom wall portion 124a, and an indoor side from the upper end of the indoor wall portion 124b. A projecting portion 82 is provided on the outer side of the upper end of the indoor wall portion 124b of the resin lower member 124 so as to be close to the indoor side surface of the lower stile 22 of the inner sash 2. The space between the inner peripheral surface of the lower frame 12 and the upper surface of the inner shoji 2 on the indoor side of the inner guide rail 122a is separated from the indoor space, and the air to which cold heat is transmitted from the indoor side surface of the inner guide rail 122a is transferred to the room. Convection is suppressed.

The right vertical frame 13 is formed of a metal material such as aluminum, and is provided with a main body member 131 on the inner peripheral surface thereof, which is provided with a pulling piece 131a with which the pulling block f arranged on the door end stile 23 of the shoji 2 abuts. , The resin right member 132 is arranged and fixed on the inner peripheral surface of the main body member 131 on the indoor side.

The resin right member 132 includes a mounting portion 132a that is engaged with the main body member 131, a right vertical wall portion 132b that extends in the inner peripheral direction from the indoor end of the mounting portion 132a, and an inner peripheral side end of the right vertical wall portion 132b. It is composed of a forehead portion 132c extending to the indoor side, and in a state where the mounting portion 132a is engaged with the main body member 131, the opening of the building is opened by fixing at a plurality of places from the inner peripheral side with screws g or the like penetrating both. It is firmly attached to the part.

A protrusion 83 is provided so as to be closer to the indoor side surface of the door end stile 23 of the inner sash 2 from the inner peripheral end chamber outer surface of the right vertical wall portion 132b of the resin right member 132, and the door end of the inner sash 2 is provided. The space between the surface and the inner peripheral surface of the right vertical frame 13 is separated from the indoor space to suppress the convection of air passing through the space between the door tip surface of the shoji 2 and the inner peripheral surface of the right vertical frame 13. ..

The left vertical frame 14 is formed of a metal material such as aluminum, and is provided with a main body member 141 having a pulling piece 141a on the inner peripheral surface with which the pulling block f arranged on the door end frame 34 of the outer shoji 3 abuts. It is composed of a resin left member 142 arranged and fixed on the inner peripheral surface of the main body member 141 on the indoor side.

The resin left member 142 is composed of a main body portion 142a that is engaged with the main body member 141 and covers the inner peripheral surface of the left vertical frame 14 on the indoor side, and a forehead portion 142b that extends to the indoor side of the main body portion 142a. A protruding portion 84 is provided so as to approach the indoor side surface of the door end stile 34 of the outer sash 3 from the inner peripheral side end of the outdoor surface of the main body 142a, and the door front surface of the outer sash 3 and the inner circumference of the left vertical frame 14 The space between the surfaces is separated from the indoor space, and the convection in which the air to which the cold heat is transmitted flows into the room through the space is suppressed.

In the above embodiment, the protruding portions 81 to 84 have a fin shape as shown in FIG. 4, but are formed as a semicircular hollow portion as shown in FIG. 5, for example. Also, by making the protruding portion a hollow structure, it is possible to suppress the convection of air and improve the heat insulating property by the air in the hollow portion.

The main body portion 142a of the resin left member 142 is provided with mounting recesses 142c that open in the inner peripheral direction at a plurality of positions in the vertical direction, and the bottom wall of the mounting recesses 142c is polymerized on the main body member 141 of the left vertical frame 14. Then, it is fixed to the opening of the building by fixing it at a plurality of places from the inner peripheral side with screws g or the like penetrating both of them.
The mounting recess 142c may be configured as a groove portion continuous in the longitudinal direction (vertical direction) of the resin left member 142.

A plurality of deformable fin-shaped protrusions 91 and 91 extending toward the center (center line) of the opening are provided on the peripheral edge of the opening of the mounting recess 142c, and the resin left member 142 is used as the main body member of the left vertical frame 14. When fixed with screws g or the like in a state of being polymerized on 141, the cold heat transmitted to the screws g or the like via the main body member 141 of the left vertical frame 14 made of aluminum or the like is suppressed from being transmitted to the room. At the same time, the deterioration of the design due to the head of the screw g or the like being exposed indoors is suppressed.

Since the fin-shaped protrusions 91 and 91 are formed in a deformable fin shape, the fin-shaped protrusions 91 and 91 can be deformed during fixing work with screws g or the like, and at the end of the work. By restoring, it is possible to suppress the deterioration of the heat insulating performance due to the convection of air in the mounting recess 142c.
By covering the mounting recesses 142c with a panel instead of providing the fin-shaped protrusions 91 and 91, it is possible to suppress the deterioration of the design while suppressing the deterioration of the heat insulating performance.

(Composition of shoji)
The configuration of the shoji will be described with reference to the internal shoji 2.
The upper stile 21 of the inner sash 2 is configured as a composite stile composed of an upper stile chamber outer side portion 211 formed of a metal material such as aluminum and an upper stile chamber inner side portion 212 formed of resin or the like. A guide groove guided by the inner guide rail 112a formed on the upper frame 11 is formed on the outer periphery of the 21.

A tight material that comes into contact with or is close to the inner guide rail 112a is attached to the upper end of the outdoor side and the upper end of the indoor side of the guide groove, and the upper frame 11 and the upper stile 21 are airtightly provided to the upper stile 21. It prevents outside air from directly entering the room through between the upper surface and the lower surface of the upper frame 11.

The lower stile 22 of the inner sash 2 is configured as a composite stile composed of a lower stile chamber outer side portion 221 formed of a metal material such as aluminum and a lower stile chamber inner side portion 222 formed of resin or the like. A guide groove is formed on the outer periphery of the 22, and a wheel a running on the inner guide rail 122a formed on the lower frame 12 is arranged in the guide groove.

A tight material that abuts on the inner guide rail 122a is attached to the lower end of the outdoor side of the guide groove so that the lower frame 12 and the lower stile 22 are airtight, and the lower surface of the lower stile 22 and the upper surface of the lower frame 12 It prevents the outside air from directly entering the room through the space.

The door tip stile 23 of the shoji 2 is configured as a composite stile composed of a door tip stile chamber outer side portion 231 formed of a metal material such as aluminum and a door tip stile indoor side portion 232 formed of resin or the like. ..
A pulling block f that abuts on the pulling piece 131a formed in the right vertical frame 13 is installed on the outer periphery of the doorway stile 23, and an internal shoji 2 is installed at the outer peripheral end of the doorway stile chamber outer side 231. A tight material that comes into contact with the attracting piece 131a when closed is attached, and the space between the right vertical frame 13 and the door tip stile 23 is made airtight so that the outer peripheral surface of the door tip stile 23 and the inner peripheral surface of the right vertical frame 13 are airtight. It prevents the outside air from directly entering the room through the space between the two.

The sash 24 of the shoji 2 is composed of a sash chamber outer side 241 formed of a metal material such as aluminum and a sash indoor side 242 formed of resin or the like, and is composed of a sash indoor side. The 242 is integrated so as to cover the indoor side surface and the outer peripheral surface of the combination stile chamber outer portion 241, that is, the surface exposed to the room when the shoji is closed, and is configured as a composite stile.
Then, a piece is formed at substantially the center of the outdoor surface of the combination stile outdoor portion 241, and the smoke return c is formed in cooperation with the piece formed on the indoor side surface of the combination stile 33 of the shoji screen 3. doing. Further, a protrusion 85 is provided at the outdoor end of the outer peripheral surface portion of the indoor side portion 242 of the mating stile so as to be close to the indoor side surface of the mating stile 33 of the outer sash 3. The space between the mating stile 33 and the mating stile 24 of the shoji 2 is separated from the indoor space to suppress air convection.

The outer sash 3 is different from the inner sash 2 in that the entire combination stile 33 is made of a metal material such as aluminum and is not configured as a composite stile. Then, a piece of smoke return c is provided on the indoor side surface of the combination stile 33. Further, a tight material that comes into contact with the combination stile 24 of the inner sash 2 is attached to the outer peripheral end of the indoor side surface, and is between the combination stile 33 of the outer sash 3 and the combination stile 24 of the inner sash 2. It prevents outside air from entering the room directly through it.
Since the other configurations of the external shoji 3 are almost the same as those of the internal shoji 2, the description thereof will be omitted.

In the present embodiment, the internal sash 2 is configured as a tenon sash in which the upper and lower stiles 21 and 22 are inserted into the groove b on the inner circumference of the door end stile 23.
As can be seen in FIG. 6, in the tenon shoji, the estimated dimensions of the upper and lower stiles 21 and 22 are smaller than the estimated dimensions of the door end stile 23 by the thickness p. That is, the indoor side surface of the door end stile 23 is on the indoor side by the thickness p of the upper side and the indoor side surface of the lower stiles 21 and 22.
Therefore, when the inner peripheral opening of the frame body 1 has a constant width over four circumferences, the protrusions 81 and 82 provided on the outdoor outer surfaces of the indoor wall portions 114c and 124b of the upper and lower frames 11 and 12 The distance between the upper and lower stiles 21 and 22 from the indoor side surface is larger than the distance between the protrusion 83 provided on the outdoor side of the right vertical wall portion 132b of the right vertical frame 13 and the indoor side surface of the door end stile 23. It increases by the size p of the wall thickness of 23.
In such a case, for the right vertical frame 13 (door end frame), the protruding portion 83 of the right vertical wall portion 132b is formed by a small fin piece, or the protruding portion 83 is not provided on the right vertical wall portion 132b. By bringing the right vertical wall portion 132b directly close to the indoor side surface of the door tip stile 23, the distance between the protruding portion 83 of the right vertical frame 13 and the indoor side surface of the door front stile 23 and the protruding portions of the upper and lower frames 11 and 12 The distance between 81 and 82 and the indoor side surfaces of the upper and lower stiles 21 and 22 can be made substantially the same.
In addition, it is preferable to appropriately select appropriate protrusions according to the distance between the upper and lower frames 11 and 12, such as forming the protrusions 81 and 82 larger by the hollow portions.

Further, when the upper and lower end caps 6 are attached to the upper end or the lower end of the door end stile 23 and the combination stile 24 to close the corners of the internal shoji 2, the upper end or the lower end of the door end stile 23 and the combination stile 24 is closed. As shown in FIG. 6, for example, the upper and lower stiles 21 are formed on the upper and lower end caps 6 at the same positions as the indoor side surfaces of the upper and lower stiles 21 and 22 in the prospective direction. , 22 is formed on the indoor side surface in the left-right direction so that the distance between the upper and lower stiles 21 and 22 and the indoor side surface is the same over the entire length of the protruding portions 81 and 82. Is preferable.
On the side of the mating stile 24, the protruding portions 81 and 82 on the outer sash side are appropriately cut off with a cutter or the like to form the protruding portions 81 and 82 and the upper and lower end caps 6 of the mating stile 24. In that case, it is not necessary to form a vertical surface on the upper and lower end caps 6 of the mating stile 24.

The heat insulating performance of the heat insulating sash according to the embodiment of the present invention will be verified.
As the first embodiment, a heat insulating sash having a fin-shaped protrusion 71 provided on the lower surface of the inter-rail upper cover 51, and as the second embodiment, further projecting onto the resin upper member 114, the resin lower member 124, and the resin right member 132, respectively. A heat insulating sash provided with portions 81, 82, 83 was used, and as a comparative example, the fin-shaped protruding portion 71 and the protruding portions 81, 82, 83 were not provided.
Table 1 shows the heat transmission rates of Examples 1 and 2 and Comparative Examples of the present invention.
The heat transmission coefficient is used as one of the criteria for evaluating the heat insulation performance of sashes, etc., and the amount of heat that passes through 1 m2 per hour when there is a temperature difference between the inside and outside of the sash, etc., is watt. It is expressed by, and the smaller the value, the better the heat insulating property.
In the table, LE3-G16-3 is low-E 3 mm glass + intermediate gas layer 16 mm + float transparent 3 mm glass double glazing, and LE3-A16-3 is Low-E 3 mm glass + intermediate air layer 16. Milli + float transparent 3 mm glass double glazing, 3-G16-3 means float transparent 3 mm glass + medium air layer 10 mm + float transparent 3 mm glass double glazing.

From Table 1, in the sash using any of the double glazings, a comparative example in which the fin-shaped protrusion 71 is provided on the lower surface of the inter-rail upper cover 51 so that no protrusion is provided on any side of the window frame. On the other hand, the heat transmission coefficient was improved by 0.04 to 0.05 points, and the protrusions 81, 82, and 83 were provided on the resin upper member 114, the resin lower member 124, and the resin right member 132, respectively. It is improved by 0.04 to 0.05 points, and it can be seen that the heat insulating property of the sash is improved.

As described above, in the embodiment of the present invention, the protrusions 81, 82, 83 provided at the inner peripheral ends of the upper, lower frames 11, 12 and the right vertical frame 13 of the frame 1 are formed inside the frame 1. By separating the space between the peripheral surface and the outer peripheral surface of the inner barrier 2 and the indoor space, it is possible to prevent the air to which cold heat is transmitted through the space from convection into the indoor space. Air to which cold heat is transmitted from the indoor side surfaces of the guide rails 112a and 122a and air to which cold heat is transmitted from the head of the screw g for fixing the resin frame material (resin upper member 114, resin right member 132) pass through the space. Convection that flows through the room can be suppressed.
Further, the protruding portions 84 provided on the left vertical frame 14 of the frame body 1 and the fin-shaped protruding portions 91 and 91 prevent convection in which the air to which cold heat is transmitted flows into the room on the inner peripheral surface of the left vertical frame 14. It can be deterred.
Moreover, since the projecting portions 81, 82, 83, 84 provided on the frame body 1 are close to the side surface of the frame body in a non-contact state, the projecting portions 81, 82, 83, 84 come close to each other when the shoji is opened and closed. Smooth opening and closing of the sliding shoji can be maintained without touching the inner and outer shoji.

Further, in the present embodiment, particularly in the upper frame portion where it is necessary to secure a large space, the resin is made of resin arranged between the lower surface of the resin upper member 114 of the upper frame 11 and the guide rail of the upper frame 11. On the lower surface of the inter-rail upper cover 51 of the above, projecting portions 71 and 72 are formed so as to hang down.
If any one of the above-mentioned protruding portions 71, 72, 81 to 84, 91 is provided, the effect of improving the heat insulating performance can be obtained by itself, but in particular, the upper, lower frames 11, 12 and the frame 1 The protruding portions 81, 82, 83 provided at the inner peripheral end of the right vertical frame 13, the protruding portion 84 provided at the inner peripheral portion of the left vertical frame 14, and the protruding portion 71 formed on the lower surface of the upper frame 11 It is possible to form a space separated from the indoor space over approximately four circumferences of the sash, and it is possible to more efficiently prevent the transfer of cold heat by air convection.

It is preferable that the tip of each projecting portion is in contact with either the upper frame or the upper stile or is about 2 mm or less, but if they are close to each other so as to be about 10 mm or less, convection is suppressed to some extent. It is possible to improve the heat insulating performance.

1: Frame 11: Upper frame 111a: Outer guide rail 111b: Inner guide rail 2: Inner shoji 21: Upper stile 51: Inter-rail upper cover 52: Inter-rail lower cover 71, 72: Protruding parts 81-85: Protruding parts 91: Projection

Claims (1)

It has a frame that is fixed to the opening of the building and a shoji that can be opened and closed by the frame.
The frame body includes an upper member formed of a metal material and attached to the inner circumference of the building opening, and a resin upper member arranged on the inner circumference of the upper member.
The upper member has a hanging piece that hangs downward from the lower surface to guide the shoji.
A sash provided with a separate member on the lower surface of the resin upper member on the indoor side of the hanging piece that guides the shoji, which deforms when the shoji is erected and is restored after the erection is completed.

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