JP7361141B2 - sash - Google Patents

Description

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

Conventionally, sashes installed in openings in buildings are required to have heat insulation properties, and by constructing a frame by connecting indoor and outdoor members with a heat insulating member, it is possible to reduce the heat transfer between indoors and outdoors. Sliding type insulating sashes that prevent transmission are known.
Also known is a composite heat insulating sash in which the indoor side portions of the frame and the frame are formed of resin shapes to improve heat insulating performance.
In the sliding type heat insulating sash, a resin cover member is covered between the outer guide rail of the outdoor member and the inner guide rail of the indoor member, and a shielding member is provided on the outdoor side of the inner guide rail. A heat insulating sash has been known that improves heat insulation performance by preventing outside air from directly hitting the guide rail (Patent Document 1).

Japanese Patent Application Publication No. 2001-55869

Normally, in a sliding type sash, the shoji and the frame are sealed with a tight material to isolate the outdoor space from the indoor space, but air that transfers cold and heat through guide rails, etc. Cold heat was transferred to the indoor space by convection in the space between the two, leading to a decline in insulation performance. In particular, it is necessary to secure a large space between the top surface of the shoji and the inner circumferential surface of the upper frame in order to ensure the dimensions of the kendon. There were also restrictions on the contact between the shoji and the inner peripheral surface of the upper frame, and the transfer of cold and heat due to air convection in the large space between the top surface of the shoji and the inner peripheral surface of the upper frame could not be ignored.
In the heat-insulating sash of Patent Document 1, the shielding member is provided to prevent outside air from directly hitting the guide rail of the indoor member and improve the heat-insulating performance. The transfer of cold and heat through air convection in the space between the surfaces was not considered.
Therefore, the cold heat transferred from the outdoors to the outdoor member is transferred to the air as radiant heat from the indoor surface of the guide rail of the outdoor member, and is further transferred indoors by air convection in the space between the shoji and the frame. There was a possibility that it would happen.
In addition, in a composite heat insulating sash in which the indoor side of the frame is formed from a resin profile, the cold heat transmitted through the screws for fixing the resin profile is transferred to the space between the shoji and the frame. There was a possibility that the air could be transmitted indoors due to air convection.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a heat insulating sash that can suppress the convection of air to which cold heat has been transferred into the indoor space and improve the heat insulation performance. .

One embodiment of the present invention includes a frame body and a shoji that slides to open and close a window, and one vertical frame constituting the frame body is composed of a main body member made of a metal material and a hard resin material. It has a resin member that covers the inner peripheral surface of the main body member on the indoor side, and the door frame of the shoji is made of a resin material that covers the outdoor side of the door frame made of a metal material and the indoor side of the outdoor side of the door frame. The resin member of the vertical frame has an indoor side facing surface of the doorside stile indoor side of the shoji shoji, which is opposite to the indoor side facing surface of the doorside stile indoor side of the shoji. It also has a protrusion made of a hard resin material that protrudes straight from the inner peripheral end of the outdoor facing surface toward the outdoor side, and the protrusion of the resin member of the vertical frame This is a sash that is close to the inside of the stile interior without touching the door of the stile.

According to the sash of one embodiment, it is possible to suppress the convection of air to which cold and heat has been transferred into the indoor space, and improve the heat insulation performance.

1 is a longitudinal cross-sectional view of a heat insulating sash according to a first embodiment of the present invention. FIG. 1 is a cross-sectional view of the heat insulating sash according to the first embodiment of the present invention. FIG. 2 is a plan view of the joining portion of the upper frame of the heat insulating sash of the present invention, viewed from below. FIG. 2 is an enlarged vertical cross-sectional view of the upper frame portion of the heat insulating sash according to the first embodiment of the present invention. FIG. 7 is an enlarged vertical cross-sectional view of the upper frame portion of the heat insulating sash according to the second embodiment of the present invention. FIG. 3 is a perspective view illustrating a side surface of a lower corner portion of a frame adjacent to a protruding portion of a heat insulating sash according to an embodiment of the present invention.

The configuration of a heat insulating sash according to an embodiment of the present invention will be described with reference to the drawings.
(Overall composition)
A heat insulating sash according to an embodiment of the present invention is installed in an opening of a building, and includes a frame body 1 made up of an upper frame 11, a lower frame 12, and right and left vertical frames 13, 14 arranged around each other, upper frames 21, 31, The lower stile 22, 32, left and right vertical stile (door stile 23, 34, and side stile 24, 33) are assembled in four circles, and a panel body is fitted on the inner periphery, and the inner stile is made up of the outer shoji 2, 3. By supporting the inner and outer shoji 2 and 3 so as to be movable in the left-right direction along the inner and outer guide rails formed on the frame 1, it is configured as a double-sliding window.
Note that the insulating sash of the present invention is not limited to double-sliding windows, but can be applied to any type of insulating sash, such as single-sliding windows, as long as the sash is opened and closed by sliding the shoji sideways against the window frame. It's okay.

-Embodiment-
A heat insulating sash according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 4.
(Frame configuration)
The upper frame 11 includes an outdoor upper member 111 and an indoor upper member 112 formed of a metal material such as aluminum, and a connection made of a heat insulating material such as resin that connects 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 and fixed to the inner periphery of the lower surface of the indoor upper member 112.
An outer guide rail (guide rail) 111a for guiding the outer shoji 3 is suspended from the lower surface of the upper member 111 on the outdoor side, and an inner shoji is hung on the lower surface of the outer end of the upper member 112 on the indoor side. An inner guide rail (guide rail) 112a for guiding 2 is suspended.

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 consists of an indoor wall part 114c that hangs further down, and a frame part 114d that extends toward the indoor side from the lower end of the indoor wall part 114c.
Then, while the upper wall part 114b of the resin upper member 114 is engaged with the indoor upper member 112, it is fixed in multiple places from the inner circumferential side with screws g etc. that pass through both, thereby firmly attaching it to the opening of the building. installed.

A resin inter-rail upper cover 51 that covers the lower surface of the outdoor upper member 111 is arranged between the outer guide rail 111a and the inner guide rail 112a.
The inter-rail upper cover 51 is configured as a substantially flat long member having approximately half the length of the upper frame 11, and includes a windshield plate installed at least at a position above the meeting portion of the upper frame 11. d and the left vertical frame 14, and prevents cold heat from being transmitted indoors from the lower surface of the outdoor upper member 111 that is exposed indoors when the inner and outer shoji 2 and 3 are closed. .

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 are made of a soft material such as a soft resin. The protrusions 71 and 72 hang down while being inclined toward the indoor side as they go downward, and are provided so as to be close to or in contact with the upper surfaces of the outer and inner shoji 2 and 3.

The protrusions 71 and 72 are made of a soft material so that they can be deformed and restored, so when the inner and outer shoji 2 and 3 are set up with a kendon, the fin-like protrusions 71 and 72 are easily deformed. The erection work can be carried out smoothly. In addition, after construction, the lower ends of the protrusions 71 and 72 can be brought close to or in contact with the upper surfaces of the inner and outer shoji 2 and 3 by restoring to the original shape, so that the inner peripheral surface of the upper frame 11 and the inner and outer shoji While ensuring a sufficient gap to allow the shoji to be built between the upper surfaces of 2 and 3, the protrusions 71 and 72 can close at least part of the gap after the shoji is built.

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

Furthermore, since the protrusions 71 and 72 are slanted and hung so that the lower they go, the closer they are to the indoor side, deformation when installing the shoji is uniform over the entire longitudinal length, and twisting or twisting occurs along the way. It is possible to prevent this from occurring, and it is possible to maintain a good proximity or contact state during restoration.

Note that the fin-shaped protrusions 71 and 72 can be formed by integrally molding a soft resin into 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 can be formed. It is also possible to form it as a separate body and attach it to the inter-rail upper cover 51 or the resin upper member 114 using engagement means or the like. Further, the protrusions 71 and 72 may be a hard fin member that is swingably supported by a semicircular hollow part formed of a soft material or a hinge part, or may be provided on the upper surface of the shoji. . In addition, there are no particular restrictions on the material as long as it is a member that deforms when the shoji is set up and restores its shape after the set-up is completed.

A protruding portion 81 is provided on the lower end of the indoor wall portion 114c of the upper resin member 114 on the outdoor side so as to be close to the indoor side surface of the upper stile 21 of the inner shoji 2. The protrusion 81 is formed as a fin piece that is integrally formed with the resin upper member 114, and 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 has been transferred through the screws g is prevented from convecting between the upper surface of the inner shoji 2 and the lower surface of the upper frame 11 and flowing into the room.
Since the protrusion 81 separates the space on the top surface of the inner shoji 2 from the indoor space and suppresses air convection, not only cold heat is transmitted by the inner guide rail 112a, but also heat is transmitted by the screw g that fixes the resin upper member 114. It is possible to suppress the amount of cold and heat generated, and it is possible to obtain even better heat insulation performance. Furthermore, by forming the fin-like protrusions 72 and 81 on the resin upper member 114, a space surrounded by the resin material can be formed by the resin parts of the frame and the shoji and the protrusions 72 and 81. , can improve insulation properties.

The lower frame 12 includes an outdoor lower member 121 and an indoor lower member 122 formed of a metal material such as aluminum, and a connection made of a heat insulating material such as resin that connects 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 and fixed to the inner periphery of the upper surface of the indoor lower member 122.
An outer guide rail 121a for guiding an outer shoji screen is provided on the upper surface of the outdoor side lower member 121 on the outdoor side, and an inner guide rail 122a for guiding an inner shoji screen from the outdoor side end of the indoor side lower member 122 is provided. .
A resin inter-rail lower cover 52 that covers the upper surface of the outdoor lower member 121 is arranged between the outer guide rail 121a and the inner guide rail 122a.

The inter-rail lower cover 52 is configured as a substantially flat elongated member having approximately half the length of the lower frame 12, and is provided with a matching block installed at least at a position below the matching of the lower frame 12. (not shown) and the left vertical frame 14, and suppresses cold heat from being transmitted indoors 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. are 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 extending upward from the indoor end of the bottom wall portion 124a, and an indoor wall portion 124b extending upward from the indoor end of the indoor wall portion 124b. A projecting portion 82 is provided on the upper end of the indoor wall portion 124b of the resin lower member 124 on the outdoor side so as to be close to the indoor side surface of the lower stile 22 of the inner shoji 2. , the space between the inner circumferential 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 has been transferred from the indoor side of the inner guide rail 122a is directed into the room. It suppresses convection.

The right vertical frame 13 is made of a metal material such as aluminum, and has a main body member 131 provided with a pulling piece 131a on the inner circumferential surface of which the pulling block f arranged on the door frame 23 of the inner shoji 2 comes into contact. , the resin right member 132 is arranged and fixed on the inner circumferential 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 extending inward from the indoor end of the mounting portion 132a, and a right vertical wall portion 132b extending from the inner peripheral end of the right vertical wall portion 132b. It is composed of a frame part 132c that extends toward the indoor side, and when the mounting part 132a is engaged with the main body member 131, it can be fixed at multiple points from the inner circumferential side with screws g, etc. that pass through both, so that the opening of the building can be fixed. It is firmly attached to the part.

A protruding portion 83 is provided so as to be closer to the indoor side surface of the door frame 23 of the inner shoji 2 than the inner circumferential end of the right vertical wall portion 132b of the resin right member 132. The space between the surface and the inner peripheral surface of the right vertical frame 13 is separated from the indoor space, and the convection of air passing through the space between the door edge surface of the inner shoji 2 and the inner peripheral surface of the right vertical frame 13 is suppressed. .

The left vertical frame 14 is made of a metal material such as aluminum, and has a main body member 141 provided with a pulling piece 141a on the inner circumferential surface of which a pulling block f disposed on the door frame 34 of the outer shoji 3 comes into contact. , is constituted by 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 includes a main body part 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 frame part 142b that extends to the indoor side of the main body part 142a. A protruding portion 84 is provided so as to be closer to the indoor side surface of the door frame 34 of the outer shoji 3 from the inner peripheral side end of the outdoor surface of the main body portion 142a, and extends between the door edge surface of the outer shoji 3 and the inner periphery of the left vertical frame 14. The space between the surfaces is separated from the indoor space to prevent convection in which air to which cold and heat has been transferred flows into the room through the space.

In the above embodiment, the protrusions 81 to 84 are fin-shaped as shown in FIG. 4, but they may be formed as semicircular hollow parts, for example, as shown in FIG. By forming the protrusion into a hollow structure, it is possible to suppress air convection and improve heat insulation due to the air inside the hollow part.

The main body part 142a of the resin left member 142 is provided with mounting recesses 142c that open toward the inner circumference at multiple locations in the vertical direction, and the bottom wall of the mounting recess 142c is overlapped with the main body member 141 of the left vertical frame 14. It is fixed to the opening of the building by fixing at multiple locations from the inner circumferential side using screws g etc. that pass through both.
Note that the mounting recess 142c may be configured as a groove continuous in the longitudinal direction (vertical direction) of the resin left member 142.

A plurality of deformable fin-shaped protrusions 91, 91 extending toward the center (center line) of the opening are provided on the opening periphery of the mounting recess 142c, and the resin left member 142 is connected to the main body member of the left vertical frame 14. 141 and is fixed with screws g etc., the cold heat transmitted to the screws g etc. through the main body member 141 of the left vertical frame 14 made of aluminum etc. is suppressed from being transmitted into the room. At the same time, the design is prevented from deteriorating due to the heads of screws g etc. being exposed indoors.

Since the fin-shaped protrusions 91, 91 are formed into deformable fins, the fin-shaped protrusions 91, 91 can be deformed during fixing work using screws g, etc., and when the work is finished, By restoring the structure, it is possible to suppress a decrease in heat insulation performance due to air convection within the mounting recess 142c.
Note that by covering the mounting recess 142c with a batten instead of providing the fin-like protrusions 91, 91, it is possible to suppress the deterioration of the design while suppressing the deterioration of the heat insulation performance.

(Shoji composition)
The structure of the shoji will be explained using the inner shoji 2.
The upper stile 21 of the inner shoji 2 is configured as a composite stile consisting of an upper stile indoor side part 211 formed of a metal material such as aluminum and an upper stile indoor side part 212 formed of resin or the like. A guide groove guided by an inner guide rail 112a formed on the upper frame 11 is formed on the outer periphery of the upper frame 21.

A tight material that contacts 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 makes the space between the upper frame 11 and the upper stile 21 airtight, and the upper end of the upper stile 21. This 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 shoji 2 is configured as a composite stile consisting of a lower stile indoor side part 221 formed of a metal material such as aluminum and a lower stile indoor side part 222 formed of resin or the like. A guide groove is formed on the outer periphery of the lower frame 12, and a wheel a that runs on an inner guide rail 122a formed on the lower frame 12 is disposed within the guide groove.

A tight material that comes into contact with the inner guide rail 122a is attached to the lower end of the guide groove on the outdoor side, which makes the space between the lower frame 12 and the lower stile 22 airtight and connects the lower surface of the lower stile 22 and the upper surface of the lower frame 12. This prevents outside air from directly entering the room through the space.

The door frame 23 of the inner shoji 2 is configured as a composite frame consisting of an outer door frame 231 made of a metal material such as aluminum and an inner side 232 of the door frame made of resin or the like. .
A pulling block f that comes into contact with the pulling piece 131a formed on the right vertical frame 13 is installed on the outer periphery of the door frame 23, and a pull block f that comes into contact with the pull piece 131a formed on the right vertical frame 13 is installed, and a pull block f of the inner shoji 2 is installed on the outer circumferential end of the door edge frame indoor outside part 231. A tight material is attached that comes into contact with the pulling piece 131a when closed, making the space between the right vertical frame 13 and the door frame 23 airtight, and the outer circumferential surface of the door edge frame 23 and the inner circumferential surface of the right vertical frame 13. This prevents outside air from directly entering the room through the space between the

The connecting frame 24 of the inner shoji 2 is composed of an outer side part 241 of the connecting frame room made of a metal material such as aluminum and an inner side part 242 of the combining frame room made of resin or the like. 242 is integrated so as to cover the indoor side surface and outer peripheral surface of the combined stile room outer part 241, that is, the surface exposed indoors when the shoji is closed, and is configured as a composite stile.
A piece is formed approximately at the center of the outdoor side surface of the combined frame room outer side part 241, and cooperates with a piece formed on the indoor side surface of the combined frame 33 of the outer shoji 3 to form a smoke return c. are doing. Further, a protruding portion 85 is provided at the outdoor side end of the outer circumferential surface portion of the interlocking stile indoor side part 242 so as to be close to the indoor side surface of the interlocking stile 33 of the outer shoji 3. The space between the combined stile 33 and the combined stile 24 of the inner shoji 2 is separated from the indoor space to suppress air convection.

The outer shoji 3 differs from the inner shoji 2 in that the entire stile 33 is formed of a metal material such as aluminum and is not configured as a composite stile. A piece constituting a smoke return c is provided on the indoor side surface of the connecting frame 33. Furthermore, a tight material is attached to the outer peripheral edge of the indoor side surface to abut against the matching stile 24 of the inner shoji 2, and between the matching stile 33 of the outer shoji 3 and the matching stile 24 of the inner shoji 2. This prevents outside air from directly entering the room.
The other structure of the outer shoji 3 is generally the same as that of the inner shoji 2, so the explanation will be omitted.

In this embodiment, the inner shoji 2 is configured as a tenon-assembled shoji in which the ends of the upper and lower stile 21 and 22 are inserted into the groove b on the inner periphery of the door stile 23.
As seen in FIG. 6, in the tenon-assembled shoji, the projected dimensions of the upper and lower frames 21 and 22 are smaller than the projected dimension of the door end stile 23 by the wall thickness dimension p. That is, the indoor side surface of the door stile 23 is closer to the indoor side than the indoor side surfaces of the upper and lower stile 21 and 22 by a wall thickness p.
Therefore, when the inner circumferential opening of the frame 1 has a constant width over the four circumferences, the protrusions 81 and 82 provided on the outdoor side 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 frames 21, 22 and the indoor side surface is determined by the distance between the protrusion 83 provided on the outdoor side surface of the right vertical wall portion 132b of the right vertical frame 13 and the indoor side surface of the door frame 23. 23 is increased by the wall thickness dimension p.
In such a case, for the right vertical frame 13 (door frame), the protruding part 83 of the right vertical wall part 132b is formed by a small fin piece, or the protruding part 83 is not provided on the right vertical wall part 132b. By bringing the right vertical wall portion 132b directly close to the indoor side surface of the door frame 23, the distance between the protruding portion 83 of the right vertical frame 13 and the indoor side surface of the door frame 23 and the protruding portions of the upper and lower frames 11 and 12 are reduced. The distances between 81 and 82 and the indoor side surfaces of the upper and lower frames 21 and 22 can be made substantially the same.
In addition, it is preferable to select appropriate protrusions depending on the spacing between the respective parts, such as forming the protrusions 81 and 82 of the upper and lower frames 11 and 12 larger than the hollow portions.

Furthermore, when attaching the upper and lower end caps 6 to the upper ends or lower ends of the door edge stile 23 and the matching stile 24 to cover the corners of the inner shoji 2, the upper and lower ends of the door edge stile 23 and the matching stile 24 For example, as shown in FIG. 6, vertical surfaces 61 are formed on the upper and lower end caps 6 provided on the upper and lower stile 21 and 22 at the same position in the perspective direction as the indoor side surfaces of the upper and lower stile 21 and 22. , 22 is formed with a part w extending in the left-right direction on the indoor side surfaces of the upper and lower frames 21 and 22, and the distance between the projecting parts 81 and 82 and the indoor side surfaces of the upper and lower frames 21 and 22 is the same over the entire length of the protrusions 81 and 82. is preferred.
As for the side stile 24, by cutting the protrusions 81, 82 on the outer shoji side with a cutter, etc., the protrusions 81, 82 and the indoor side surfaces of the upper and lower end caps 6 of the stile 24 are connected. It is also possible to make the intervals substantially the same, and in that case, it is not necessary to form vertical surfaces in the upper and lower end caps 6 of the connecting frame 24.

The heat insulation performance of the heat insulation sash according to the embodiment of the present invention will be verified.
As Example 1, a heat insulating sash is provided with a fin-shaped protrusion 71 on the lower surface of the upper cover 51 between the rails, and as Example 2, a resin upper member 114, a lower resin member 124, and a resin right member 132 each have protrusions. A heat insulating sash provided with portions 81, 82, and 83 was used, and as a comparative example, the fin-shaped protrusion portion 71 and the protrusion portions 81, 82, and 83 were not provided.
Table 1 below shows the heat transmission coefficients of Examples 1 and 2 of the present invention and comparative examples.
Thermal conductivity is used as one of the standards for evaluating the insulation performance of sashes, etc., and is the amount of heat that passes through 1 m2 per hour in watts when there is a 1 degree difference in temperature between the inside and outside of the sash, etc. It is expressed as , and the smaller the number, the better the insulation property.
In the table, LE3-G16-3 means Low-E 3mm glass + intermediate gas layer 16mm + float transparent 3mm glass double-glazed glass, and LE3-A16-3 means Low-E 3mm glass + intermediate air layer 16 3-G16-3, a double-glazed glass consisting of 3 mm clear float glass + 3 mm clear float glass, refers to a double-glazed glass consisting of 3 mm clear float glass + 10 mm hollow air layer + 3 mm clear float glass.

From Table 1, a comparative example in which no protrusion is provided on either side of the window frame by providing a fin-shaped protrusion 71 on the lower surface of the inter-rail upper cover 51 in any of the sashes using double-glazed glass. In contrast, the heat transmission coefficient is improved by 0.04 to 0.05 points, and furthermore, by providing the protrusions 81, 82, 83 on the resin upper member 114, the resin lower member 124, and the resin right member 132, respectively, This is an improvement of 0.04 to 0.05 points, indicating that the heat insulation properties of the sash have 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 and lower frames 11, 12 and the right vertical frame 13 of the frame 1 can By separating the space between the circumferential surface and the outer circumferential surface of the inner shoji 2 from the indoor space, it is possible to suppress the convection of air to which cold and heat has been transferred through the space into the indoor space. Air to which cold heat is transferred from the indoor side surfaces of the guide rails 112a and 122a, and air to which cold heat is transferred from the heads of screws g that fix the resin frame members (resin upper member 114, resin right member 132) fills the space. It is possible to suppress convection flowing through the room.
In addition, the protrusion 84 provided on the left vertical frame 14 of the frame 1 and the fin-like protrusions 91, 91 prevent convection of air to which cold heat has been transferred into the room on the inner peripheral surface of the left vertical frame 14. It can be suppressed.
Moreover, since the protrusions 81, 82, 83, 84 provided on the frame 1 are close to the side surface of the frame in a non-contact state, the protrusions 81, 82, 83, 84 are closed when the shoji is opened and closed. Smooth opening and closing of a sliding shoji can be maintained without contacting the inner and outer shoji 2 and 3.

Furthermore, in this embodiment, especially in the upper frame portion where it is necessary to secure a large space, resin Projections 71 and 72 are formed to hang down from the lower surface of the inter-rail upper cover 51.
If any one of the above protrusions 71, 72, 81 to 84, 91 is provided, it will have the effect of improving the heat insulation performance, but in particular, the upper and lower frames 11, 12 of the frame 1 and By the protrusions 81, 82, 83 provided on the inner circumference of the right vertical frame 13, the protrusion 84 provided on the inner circumference of the left vertical frame 14, and the protrusion 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 and heat due to air convection.

It is preferable that the tip of each protrusion be in contact with either the upper frame or the upper stile by a distance of about 2 mm or less, but if they are close to each other by about 10 mm or less, convection can be suppressed to some extent. It is possible to improve insulation performance.

1: Frame body 11: Upper frame 111a: Outer guide rail 111b: Inner guide rail 2: Inner shoji 21: Upper stile 51: Upper cover between rails 52: Lower cover between rails 71, 72: Projecting parts 81 to 85: Projecting parts 91: Projection part

Claims (1)

Equipped with a frame and a shoji that slides to open and close the window,
One of the vertical frames constituting the frame has a main body member made of a metal material, and a resin member made of a hard resin material that covers the inner peripheral surface of the main body member on the indoor side,
The door frame of a shoji door has an exterior side of the door frame made of a metal material, and an interior side of the door frame made of a resin material that covers the indoor side of the exterior side of the door frame.
The resin member of the vertical frame has an outdoor side facing surface on the outdoor side end that is opposite to the indoor side facing surface of the indoor side of the doorside frame of the shoji, and also has an outdoor side facing surface. It has a protrusion made of a hard resin material that protrudes straight from the inner peripheral end to the outdoor side,
The protruding part of the resin member of the vertical frame is in close proximity to the interior side of the door stile of the shoji door stile in a non-contact state.

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