JP2019173550A - sash - Google Patents

Abstract

To suppress the convection of the air transmitted with cold heat to the indoor space and improve the heat insulation performance.SOLUTION: The sash comprises a frame body fixed to the building opening, and a shoji supported by the frame body. The upper frame of the frame body is covered with a resin member from the inner peripheral surface facing the shoji to below the lower end of the indoor side vertical wall. As for the resin member of the upper frame, a fin-like protrusion that separates the space on the upper surface of the shoji from the indoor space is provided toward the resin member forming the indoor side surface of the shoji.SELECTED DRAWING: Figure 4

Description

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

Conventionally, a sash installed in an opening of a building has been required to have heat insulation properties, and the frame body is configured by connecting an indoor side member and an outdoor side member with a heat insulating member, so that heat generated indoors and outdoors can be reduced. A sliding insulation sash that prevents transmission is known.
There is also known a composite heat insulating sash in which the indoor side portions of the frame and the housing are formed of a resin shape to improve the heat insulating performance.
In the sliding heat insulating sash, the 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. There has been known a heat insulating sash that improves the heat insulating performance by preventing the outside air or the like from directly hitting the guide rail by providing (Patent Document 1).

JP 2001-55869 A

Normally, the sliding sash is sealed with a tight material between the shoji and the frame to block the outdoor space from the indoor space, but the air to which cold heat has been transmitted through the guide rail etc. is between the shoji and the frame. By convection in the space between, cold heat was transmitted to the indoor space, leading 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 purpose of securing the standing dimension by Kendon, and the shoji, frame and tight material are used because the shoji is slid. There is also a restriction on the contact between the top and the bottom of the shoji and the inner peripheral surface of the upper frame, and the transfer of cold heat due to air convection in a large space cannot be ignored.
In the heat insulating sash of the above-mentioned Patent Document 1, by providing a shielding member, it is possible to suppress heat from being directly applied to the guide rail of the indoor side member and improve the heat insulating performance. The transfer of cold by air convection in the space between the surfaces was not considered.
Therefore, the cold heat transmitted from the outdoor 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 transmitted to the indoor by air convection in the space between the shoji and the frame. There was a possibility.
Further, in the composite heat insulating sash in which the indoor side portion of the frame is formed of a resin shape, the cold transmitted through the screw for fixing the resin shape is a space between the shoji and the frame. There is a possibility that it will be transmitted to the room by convection of 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 the convection of air to which cold heat is transmitted to the indoor space and improving the heat insulating performance. .

  One embodiment of the present invention includes a frame fixed to a building opening and a shoji supported by the frame, and the upper frame of the frame is a vertical wall on the indoor side from the inner peripheral surface facing the shoji. The resin member of the upper frame is directed toward the resin member in which the fin-like projecting portion that separates the space on the upper surface of the shoji from the indoor space forms the indoor side surface of the shoji. It is a sash provided.

  It is possible to suppress the convection of the air transmitted with cold heat to the indoor space and improve the heat insulation performance.

It is a longitudinal cross-sectional view of the heat insulation sash which concerns on the 1st Embodiment of this invention. It is a cross-sectional view of the heat insulation sash which concerns on the 1st Embodiment of this invention. It is the top view which looked at the summoning part of the upper frame of the heat insulation sash of this invention from the bottom. It is an expanded vertical sectional view of the upper frame part of the heat insulation sash which concerns on the 1st Embodiment of this invention. It is an expanded vertical sectional view of the upper frame part of the heat insulation sash which concerns on the 2nd Embodiment of this invention. It is a perspective view explaining the lower corner part side surface of the housing which the protrusion part of the heat insulation sash which concerns on embodiment of this invention adjoins.

The structure of the heat insulation sash of embodiment of this invention is demonstrated with reference to drawings.
(Overall configuration)
The heat insulating sash according to the embodiment of the present invention is installed in a building opening, and includes an upper frame 11, a lower frame 12, and a right frame and a left vertical frame 13, 14, which are assembled on four sides, and upper frames 21, 31, It consists of outer shojis 2 and 3 with the lower rods 22 and 32 and the left and right vertical rods (door toe rods 23 and 34 and summoning rods 24 and 33) assembled on four sides and the panel body fitted into the inner circumference. The sliding doors 2 and 3 are supported along the outer guide rails in the frame 1 so as to be movable in the left-right direction.
The heat insulating sash of the present invention is not limited to the sliding window, and any type of heat insulating sash may be used as long as it can be opened and closed by sliding the shoji to the window frame sideways such as a sliding window. May be.

-Embodiment-
The heat insulation sash of the 1st Embodiment of this invention is demonstrated with reference to FIG.
(Frame structure)
The upper frame 11 is a connection made of a heat insulating material such as a resin connecting the outdoor upper member 111 and the indoor upper member 112, and the outdoor upper member 111 and the indoor upper member 112 formed of a metal material such as aluminum. The member 113 and the resin upper member 114 made of resin are disposed and fixed on 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 outdoor upper member 111 which is closer to the outdoor 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 side end of the upper wall portion 114b. It consists of an indoor wall portion 114c that hangs downward and a forehead portion 114d that extends from the lower end of the indoor wall portion 114c to the indoor side.
And in the state which engaged the upper wall part 114b of the resin upper member 114 with the indoor side upper member 112, it fixes to the opening part of a building firmly by fixing several places from the inner peripheral side with the screw g etc. which penetrate both. Installed.

Between the outer guide rail 111a and the inner guide rail 112a, an inter-rail upper cover 51 made of resin that covers the lower surface of the outdoor upper member 111 is disposed.
The inter-rail upper cover 51 is configured as a substantially flat plate-like long member having substantially half the length of the upper frame 11, and at least a windshield plate installed above the summing portion of the upper frame 11. d is disposed between the left vertical frame 14 and the inside and outside of the outer shoji 2 and 3 to prevent cold from being transmitted to the room from the lower surface of the outdoor upper member 111 exposed to the room. .

  Further, the bottom surface of the upper rail-to-rail cover 51 on the indoor side of the outer guide rail 111a and the lower surface of the upper wall portion 114b of the upper resin member 114 on the indoor side of the inner guide rail 112a are finned with a soft material such as soft resin. The projecting portions 71 and 72 are inclined so as to become the indoor side as they go downward, and are provided so as to be close to or in contact with the outer surfaces of the inner and outer nails 2 and 3.

  Since the protrusions 71 and 72 are formed of a soft material so that they can be deformed and restored, when the inner and outer shojis 2 and 3 are stood up with Kendon, the fin-like protrusions 71 and 72 are easily deformed. The standing work can be performed smoothly. Further, after construction, the lower end of the projecting portions 71, 72 can be restored to the original shape, and can be brought close to or in contact with the upper surface of the outer shoji 2, 3, so the inner peripheral surface of the upper frame 11 and the inner shoji The projecting portions 71 and 72 can block at least a part of the interval after the completion of the construction while securing a sufficient space to enable the shoji to be installed between the top surfaces of the second and third surfaces.

  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 inner and outer nails 2 and 3 is separated from the indoor space, and the outer and inner guide rails 111a and 112a are separated. The convection which the air to which cold heat was transmitted from the indoor side surface of this through the space flows into the room is suppressed.

  Furthermore, since the protrusions 71 and 72 are suspended while being inclined so as to become the indoor side as going downward, the deformation during the construction of the shoji is uniformly performed over the entire length in the longitudinal direction, and twisting or the like is performed in the middle. Can be prevented, and a good proximity or contact state can be maintained during restoration.

  The fin-like protrusions 71 and 72 can be formed as a soft resin by being integrally formed with the resin shape of the upper cover 51 between the rails or the resin upper member 114, but only the fin-like protrusions 71 and 72 are formed. Can be formed separately and attached to the upper rail cover 51 or the upper resin member 114 by 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 is deformed when the shoji is stowed and can be restored after the stowing is completed.

A protrusion 81 is provided outside the lower end of the indoor wall portion 114c of the resin upper member 114 so as to be close to the indoor side surface of the upper collar 21 of the inner shoji 2. The protrusion 81 is formed as a fin piece formed integrally with the resin upper member 114, and the inner guide rail 112 a and the resin upper member 114 are fixed by separating the space on the upper surface of the inner shoji 2 from the indoor space. The air to which the cold heat is transmitted through the screw g is prevented from flowing into the room by convection between the upper surface of the inner impeller 2 and the lower surface of the upper frame 11.
Since the protrusion 81 separates the space on the upper surface of the inner shoji 2 from the indoor space and air convection is suppressed, not only the cold heat transmitted by the inner guide rail 112a but also the screw g that fixes the resin upper member 114 is transmitted. It is possible to suppress the cold heat that is generated, and to obtain better heat insulation performance. Furthermore, by forming the fin-like projecting portion 72 and the projecting portion 81 on the resin upper member 114, a space surrounded by the resin material can be formed by the resin portions of the frame body and the shoji and the projecting portions 72 and 81. , Heat insulation can be improved.

The lower frame 12 is a connection made of an outdoor lower member 121 and an indoor lower member 122 made of a metal material such as aluminum, and a heat insulating material such as a resin that connects the outdoor lower member 121 and the indoor lower member 122. A member 123 and a resin-made resin lower member 124 disposed and fixed on the inner periphery of the upper surface of the indoor lower member 122 are configured.
An outer guide rail 121a that guides the shoji is provided on the upper surface of the outdoor lower member 121 on the outside of the room, and an inner guide rail 122a that guides the shoji from the outdoor end of the indoor lower member 122 is provided. .
Between the outer guide rail 121a and the inner guide rail 122a, a resin lower rail cover 52 that covers the upper surface of the outdoor lower member 121 is disposed.

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

  The resin lower member 124 includes a bottom wall portion 124a covering the upper surface of the indoor side lower member 122, an indoor wall portion 124b extending upward from the indoor side end of the bottom wall portion 124a, and an indoor side from the upper end of the indoor wall portion 124b. The projection 82 is provided on the outside of the upper end chamber of the indoor wall 124b of the lower resin member 124 so as to be close to the indoor side surface of the lower collar 22 of the inner shoji 2. The space between the inner peripheral surface of the lower frame 12 on the indoor side of the inner guide rail 122a and the upper surface of the inner shoji 2 is separated from the indoor space, and the air to which the cold is transmitted from the inner side surface of the inner guide rail 122a to the indoor space. Convection is suppressed.

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

  The resin right member 132 includes an attachment portion 132a engaged with the main body member 131, a right vertical wall portion 132b extending in the inner circumferential direction from the indoor side end of the attachment portion 132a, and an inner peripheral side end of the right vertical wall portion 132b. Opening of a building is configured by a forehead portion 132c extending to the indoor side, and is fixed at a plurality of locations from the inner peripheral side with screws g or the like penetrating both the attachment portion 132a and the main body member 131. It is firmly attached to the part.

  And the protrusion part 83 is provided so that it may approach from the inner peripheral end chamber outer side surface of the right vertical wall part 132b of the resin right member 132 so that it may approach to the indoor side surface of the door rod 23 of the shingles 2, The door tip of the shingles 2 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 tip 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 formed of a metal material such as aluminum, and has a main body member 141 provided with a pulling piece 141a with which a pulling block f disposed on the door toe 34 of the shoji 3 is in contact with the inner peripheral surface. The resin left member 142 is disposed and fixed on the inner peripheral surface on the indoor side of the main body member 141.

  The resin left member 142 includes 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, and a forehead portion 142b that extends to the indoor side of the main body portion 142a. A projecting portion 84 is provided so as to be closer to the indoor side surface of the door toe 34 of the shoji 3 from the end on the inner peripheral side of the outdoor surface of the main body 142a, and the door tip surface of the shoji 3 and the inner periphery 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 addition, in the said embodiment, although the protrusion parts 81 thru | or 84 have comprised the fin shape as seen in FIG. 4, for example, as seen in FIG. 5, it forms as a semicircular hollow part. In addition, by making the protrusions have a hollow structure, air convection can be suppressed and heat insulation can be improved by the air in the hollow portions.

The main body 142a of the resin left member 142 includes mounting recesses 142c that open in the inner circumferential direction at a plurality of locations in the vertical direction, and the bottom wall of the mounting recess 142c is superposed on the main body member 141 of the left vertical frame 14 And it fixes to the opening part of a building by fixing in multiple places from the inner peripheral side with the screw g etc. which penetrate both.
In addition, you may comprise the attachment recessed part 142c as a groove part which continues in the longitudinal direction (up-down direction) of the resin left member 142. FIG.

  A plurality of deformable fin-shaped protrusions 91, 91 extending toward the center (center line) of the opening are provided on the periphery of the opening of the mounting recess 142 c, and the resin left member 142 is a main body member of the left vertical frame 14. 141. When it is fixed with a screw g or the like in a state of being superposed on 141, the cold transmitted to the screw g or the like through the main body member 141 of the left vertical frame 14 made of aluminum or the like is prevented from being transmitted to the room. At the same time, design deterioration due to exposure of the head of the screw g or the like to the room is suppressed.

Since the fin-like protrusions 91 and 91 are formed in a deformable fin shape, the fin-like protrusions 91 and 91 can be deformed during the fixing work with screws g or the like, and at the end of the work. It can restore | restore and the fall of the heat insulation performance by the convection of the air in the attachment recessed part 142c can be suppressed.
In addition, it can replace with providing the fin-shaped protrusion parts 91 and 91, and can suppress the fall of a design, suppressing the fall of heat insulation performance by covering the mounting recessed part 142c with a face plate.

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

  A tight material that is in contact with or close to the inner guide rail 112a is attached to the outdoor upper end and the indoor upper end of the guide groove, and the space between the upper frame 11 and the upper rod 21 is hermetically sealed. The outside air is prevented from directly entering the room through between the upper surface and the lower surface of the upper frame 11.

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

  A tight material that is in contact with the inner guide rail 122a is attached to the lower outside end of the guide groove, and the space between the lower frame 12 and the lower rod 22 is hermetically sealed so that the lower surface of the lower rod 22 and the upper surface of the lower frame 12 are The outside air is prevented from directly entering the room through the space.

The door toe cage 23 of the inner shoji 2 is configured as a composite cage comprising a door toe cabin outer side portion 231 formed of a metal material such as aluminum and a door toe cage indoor side portion 232 formed of resin or the like. .
A pulling block f that abuts on a pulling piece 131 a formed on the right vertical frame 13 is installed on the outer periphery of the door toe fence 23, and at the outer peripheral end of the door toe fence outer side portion 231, A tight material that comes into contact with the pulling piece 131 a when closed is attached, and the space between the right vertical frame 13 and the door-end rod 23 is hermetically sealed, and the outer peripheral surface of the door-end rod 23 and the inner peripheral surface of the right vertical frame 13 To prevent outside air from entering the room directly.

The summon bowl 24 of the inner shoji 2 is composed of a summit bowl outer side 241 formed of a metal material such as aluminum and a sump bowl interior side 242 formed of a resin or the like. 242 is integrated and configured as a composite bag so as to cover the indoor side surface and the outer peripheral surface of the summoning bag room outer side portion 241, that is, the surface exposed to the room when the shoji is closed.
In addition, a piece is formed at substantially the center of the outdoor side of the summit room outer portion 241, and the smoke return c is configured in cooperation with the one piece formed on the inner side surface of the summon box 33 of the shoji 3. is doing. In addition, a protruding portion 85 is provided at the outdoor side end of the outer peripheral surface portion of the summon room side portion 242 so as to be close to the indoor side surface of the summon bowl 33 of the outer screen 3. The space between the mating bowl 33 and the summoning bowl 24 of the inner shoji 2 is separated from the indoor space to suppress air convection.

The outer shoji 3 is different from the inner shoji 2 in that the entire summon bowl 33 is made of a metal material such as aluminum and is not configured as a composite bowl. And the piece part which comprises the smoke return c is provided in the indoor side surface of the summon bowl 33. FIG. Further, a tight material is attached to the outer peripheral end of the indoor side surface so as to be in contact with the summing rod 24 of the inner shoji 2. This prevents outside air from entering the room directly.
About the other structure of the external shoji 3, since it is generally the same as that of the internal shoji 2, description is abbreviate | omitted.

In the present embodiment, the inner shoji 2 is configured as a side-by-side shoji that is formed by inserting the upper and lower end portions of the lower rods 21 and 22 into the groove b on the inner periphery of the door toe cage 23.
As can be seen from FIG. 6, the expected size of the upper and lower rods 21, 22 is smaller than the expected size of the door rod 23 by the thickness dimension p. That is, the indoor side surface of the door toe wall 23 is on the indoor side by a thickness p that is thicker than the indoor side surfaces of the upper and lower side walls 21 and 22.
Therefore, when the inner peripheral 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 walls 114c and 124b of the upper and lower frames 11 and 12; The distance between the upper and lower rods 21 and 22 and the indoor side surface of the right vertical frame 13 is greater than 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 rod 23. The thickness p is increased by 23.
In such a case, for the right vertical frame 13 (door 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. The right vertical wall 132b is directly brought close to the indoor side surface of the door toe 23, so that the distance between the protruding portion 83 of the right vertical frame 13 and the indoor side of the door toe 23 and the protruding portions of the upper and lower frames 11 and 12 are increased. 81 and 82 and the space | interval with the indoor side surface of the upper and lower collars 21 and 22 can be made substantially the same.
In addition, it is preferable to select an appropriate protrusion appropriately according to the interval between the respective parts, such as forming the protrusions 81 and 82 of the upper and lower frames 11 and 12 to be larger than the hollow part.

Further, when the upper and lower end caps 6 are attached to the upper and lower ends of the door toe fence 23 and the summoning bowl 24 and the corners of the shoji 2 are held down, the upper and lower ends of the door toe bowl 23 and the summoning bowl 24 are arranged. For example, as shown in FIG. 6, the upper and lower ridges 21 are formed on the upper and lower end caps 6 by forming a vertical surface 61 at the same position as the indoor side surfaces of the upper and lower ridges 21 and 22. , 22 is formed on the inner side surface of the inner side surface of the left and right sides 22 so that the distance between the upper side and the lower side surfaces of the lower rods 21, 22 is the same over the entire length of the protrusions 81, 82. Is preferred.
For the side of the summon bowl 24, the protrusions 81 and 82 on the side of the shoji screen are appropriately cut out with a cutter or the like, so that Can be made substantially the same, and in this case, it is not necessary to form vertical surfaces on the upper and lower end caps 6 of the summon bowl 24.

The heat insulating performance of the heat insulating sash of the embodiment of the present invention will be verified.
As Example 1, a heat insulating sash provided with a fin-like protrusion 71 on the lower surface of the inter-rail upper cover 51, and as Example 2, it further protrudes into the resin upper member 114, the resin lower member 124, and the resin right member 132, respectively. The heat insulating sash provided with the portions 81, 82, and 83 was used, and the fin-like protruding portion 71 and the protruding portions 81, 82, and 83 were not provided as a comparative example.
Table 1 shows the heat transmissivity of Examples 1 and 2 and Comparative Example of the present invention.
The heat transmissivity is used as one of the criteria for evaluating the heat insulation performance of sashes, etc., and when there is a temperature difference between the inside and outside of the sashes etc., the amount of heat passing through 1 m 2 per hour is expressed in watts. It represents that it is excellent in heat insulation, so that a numerical value is small.
In the table, LE3-G16-3 is Low-E 3 mm glass + intermediate gas layer 16 mm + float transparent 3 mm glass double layer glass, and LE3-A16-3 is Low-E 3 mm glass + intermediate air layer 16 Multi-layer glass of millimeter + float transparent 3 mm glass, 3-G16-3, indicates a double-layer glass of float transparent 3 mm glass + medium air layer 10 mm + float transparent 3 mm glass.

  From Table 1, in any sash using any multilayer glass, a comparative example in which no protrusion is provided on any side of the window frame by providing a fin-like protrusion 71 on the lower surface of the upper cover 51 between the rails. On the other hand, the heat flow rate is improved by 0.04 to 0.05 points, and furthermore, by providing the protrusions 81, 82, and 83 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 insulation of the sash is improved.

As described above, in the embodiment of the present invention, the projections 81, 82, 83 provided on the inner peripheral ends of the upper frame 1, the lower frames 11, 12, and the right vertical frame 13, By separating the space between the peripheral surface and the outer peripheral surface of the inner impeller 2 and the indoor space, it is possible to suppress the convection of the air transmitted with cold through the space into the indoor space, Air in which cold heat is transmitted from the indoor side surfaces of the guide rails 112a and 122a and air in which cold heat is transmitted from the heads of the screws g that fix the resin frame members (resin upper member 114 and resin right member 132) pass through the space. Convection flowing through the room can be suppressed.
Moreover, the convection in which the air to which the cold heat was transmitted in the inner peripheral surface of the left vertical frame 14 flows into the room by the protrusion 84 provided on the left vertical frame 14 of the frame body 1 and the fin-like protrusions 91 and 91. Can be deterred.
Moreover, since the projecting portions 81, 82, 83, 84 provided on the frame 1 are close to the side surface of the housing in a non-contact state, the projecting portions 81, 82, 83, 84 are opened when the shoji is opened and closed. The smooth opening and closing of the sliding shoji can be maintained without contacting the inner and outer shoji 2,3.

Further, in the present embodiment, in particular, in the upper frame portion where a large space needs to be secured, the resin is disposed between the lower surface of the resin upper member 114 of the upper frame 11 and the guide rails of the upper frame 11. On the lower surface of the upper rail-to-rail cover 51, projecting portions 71 and 72 are formed to hang down.
If any one of the projecting portions 71, 72, 81 to 84, 91 described above is provided alone, the effect of improving the heat insulation performance is provided, but in particular, the upper frame body 1, the lower frames 11, 12, and The protrusions 81, 82, 83 provided at the inner peripheral end of the right vertical frame 13, the protrusion 84 provided at the inner peripheral part of the left vertical frame 14, and the protrusion 71 formed on the lower surface of the upper frame 11 In addition, a space separated from the indoor space can be formed over substantially four rounds of the sash, and the transmission of cold heat due to air convection can be prevented more efficiently.

  In addition, it is preferable that the tip of each protrusion and either the upper frame or the upper collar is in contact with each other or is approximately 2 mm or less, but if close to each other so that it is approximately 10 mm or less, convection is suppressed to some extent. And the heat insulation performance can be improved.

DESCRIPTION OF SYMBOLS 1 Window frame 11 Upper frame 111a Outer guide rail 111b Inner guide rail 12 Lower frame 13 Right vertical frame 14 Left vertical frame 2 Inner shovel 21 Upper ridge 22 Lower ridge 23 Toe lantern 24 Summoning ridge 3 Upper fold 31 Upper ridge 32 Below ３３ 33 Summoning 框 34 Door tip ５１ 51 Upper cover between rails 52 Lower cover between rails 71 and 72 Protruding parts 81 to 85 Protruding parts 91 Protruding parts

Claims (1)

A frame body fixed to the building opening, and a shoji supported by the frame body,
The upper frame of the frame is covered with a resin member from the inner peripheral surface facing the shoji to below the lower end of the indoor vertical wall,
The resin member of the upper frame is a sash in which a fin-like protrusion that separates the space on the upper surface of the shoji from the indoor space is provided toward the resin member that forms the indoor side surface of the shoji.

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