Fitting

Abstract

To provide a fitting capable of suppressing separation of two metal shape members due to burning of a resin connection member in a fire, with a simpler structure.SOLUTION: A metallic member 250 is fixed to an outer lower metallic molded body 120B. An extending section 251 of the metallic member 250 extends in the indoor / outdoor direction and penetrates a through hole 122c. A hook section 252 protrudes upward from the extending section 251 on the indoor side of an inferior medial finding plate section 122. According to this structure, when a bridge member 120C is burned and the outer lower metallic molded body 120B is about to be separated from an inner lower metallic molded body 120A to the outdoor side, the hook section 252 is caught on the indoor side of the inferior medial finding plate section 122. As a result, the metallic member 250 and the outer lower metallic molded body 120B can no longer move to the outdoor side. Since it is not necessary to fix the metallic member 250 to the inner lower metallic molded body 120A, the structure for suppressing the separation between the outer lower metallic molded body 120B and the inner lower metallic molded body 120A can be realized more simply.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to fittings. [Background technology]

[0002] As a fitting in which a screen is slidably arranged relative to a frame body, such as a sliding window, there is known one in which the frame body has a metal shaped member on the inside of the room, a metal shaped member on the outside of the room, and a connecting member (for example, Patent Document 1). In Patent Document 1, the connecting member is interposed between the two metal shaped members and connects the two metal shaped members. The connecting member is made of a resin material that has lower thermal conductivity than metal materials. This configuration improves the heat insulation and moisture resistance of the frame body.

[0003] In this type of fitting, there is a risk that the connecting member made of a resin material will burn in the event of a fire, and as a result, the metal shaped member on the outside of the room may become separated from the metal shaped member on the inside of the room to the outside. Therefore, in Patent Document 1, the two metal shaped members are connected by a member made of a metal material different from the connecting member. This prevents the two metal shaped members from becoming separated even if the connecting member is burned in the event of a fire. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2012-154161 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, in Patent Document 1, the separate member is fixed to both of the two metal shapes. Accordingly, the configuration for preventing the two metal shapes from separating is complicated in shape and has a large number of parts, which may increase the manufacturing effort and cost.

[0006] In view of the above-mentioned circumstances, one of the objects of the present invention is to provide a fitting that can prevent two metal sections from separating due to the burning of a resin connecting member in the event of a fire, using a simpler configuration. [Means for solving the problem]

[0007] The building fixture of the present invention comprises a frame body consisting of left and right vertical frames, an upper frame, and a lower frame assembled all around, and a shoji screen arranged on the frame body in a state in which it slides in the extension direction of the lower frame, wherein the lower frame has a first metal profile on the inside of the room, a second metal profile on the outside of the room, and a connecting member made of a resin material located between the first metal profile and the second metal profile and connecting the first metal profile and the second metal profile, wherein the first metal profile has a projecting surface on the inner periphery and a vertical wall that protrudes upward from the projecting surface and extends in the extension direction and has a through hole that penetrates in the indoor / outdoor direction, and the lower frame comprises a metal member having a fixing portion fixed to the second metal profile, an extension portion that extends in the indoor / outdoor direction and penetrates the through hole, and a hook portion that protrudes upward from the extension portion along the indoor side surface of the vertical wall. Effect of the Invention

[0008] In the present invention, even if the connecting member is burned and the second metal shape tries to move away from the first metal shape to the outside of the room, the hook portion of the metal member fixed to the second metal shape gets caught on the inside of the vertical wall of the first metal shape and cannot move any further to the outside of the room. According to the present invention, the separation of the first metal shape and the second metal shape in the event of a fire can be suppressed without fixing the metal member to the first metal shape. Therefore, the structure that suppresses the separation can be realized more simply, and the effort and cost of manufacturing the sill having the structure and therefore the fitting can be suppressed. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a diagram showing a fitting according to an embodiment of the present invention as viewed from the inside of a room. [Diagram 2] FIG. 2 is a vertical cross-sectional view of the fitting shown in FIG. [Diagram 3] FIG. 2 is a cross-sectional view of the fitting shown in FIG. 1. [Figure 4] 2 is an enlarged vertical cross-sectional view of the lower part of the fitting shown in FIG. 1 excluding the shoji screen. [Diagram 5] 5 is an enlarged vertical cross-sectional view of a lower portion of the fitting shown in FIG. 1 excluding the shoji screen and the resin shaped material, taken at a position different from that of FIG. 4. FIG. [Figure 6] 6 is an enlarged vertical cross-sectional view of the lower portion of the fitting shown in FIG. 1 excluding the shoji screen and the resin profile, taken at a position different from that shown in FIGS. 4 and 5 . FIG. [Figure 7] 2 is a side view of a metal member included in the fixture shown in FIG. 1. [Figure 8] FIG. 2 is a plan view of a metal member included in the fixture shown in FIG. [Figure 9] 8 is a side view of the metal member included in the fitting shown in FIG. 1, seen in a direction different from that of FIG. 7. [Figure 10] 2 is a side view of a portion of the fitting shown in FIG. 1, showing a through hole into which a metal member is inserted. FIG. [Figure 11] 2 is an enlarged longitudinal sectional view of the lower part of the fitting shown in FIG. 1 excluding the shoji screen and the resin shaped material, showing a procedure for attaching a metal member to the fitting. FIG. [Figure 12] FIG. 2 is a plan view excluding the resin profile of the lower frame included in the fitting shown in FIG. 1. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] A preferred embodiment of the fittings according to the present invention will be described in detail below with reference to the accompanying drawings. For convenience, the terms "prospect direction" and "visible direction" may be used below. The "prospect direction" is the direction along the depth of the fittings, and may also be referred to as the indoor / outdoor direction. A surface along the prospective direction may be referred to as a "prospect surface." For members that extend along the horizontal direction, such as the upper and lower frames, the prospective direction is the direction along the top and bottom perpendicular to the prospective direction. For members that extend along the vertical direction, such as the vertical frame, the prospective direction is the direction along the horizontal perpendicular to the prospective direction. In addition, a surface along the prospective direction may be referred to as a "prospect surface."

[0011] 1 to 3 show a fitting according to an embodiment of the present invention. The fitting exemplified here is a so-called sliding window, which comprises a frame 10, an outer screen 20A disposed on the part of the frame 10 that faces the outside of the room, and an inner screen 20B disposed on the part of the frame 10 that faces the inside of the room. The frame 10 is configured into a rectangular frame shape by assembling left and right vertical frames 11 and 12, an upper frame 13, and a lower frame 14 all around. The outer screen 20A is an example of an exterior screen, and the inner screen 20B is an example of an interior screen.

[0012] The outer screen 20A is configured with a rectangular double-glazed glass 21A and vertical frames 22A, upper frames 23A, lower frames 24A, and vertical frames 25A arranged around the double-glazed glass 21A. Similarly, the inner screen 20B is configured with a rectangular double-glazed glass 21B and vertical frames 22B, upper frames 23B, lower frames 24B, and vertical frames 25B arranged around the double-glazed glass 21B. In this embodiment, the outer screen 20A and the inner screen 20B are arranged to be movable along the longitudinal direction of the upper frame 13 and the lower frame 14 relative to the frame body 10, and when the outer screen 20A is arranged on the left side of the frame body 10 and the inner screen 20B is arranged on the right side when viewed from the inside of the room, the opening of the frame body 10 can be closed. When the opening of the frame body 10 is closed, the vertical frame 25A located on the right side of the outer screen 20A and the vertical frame 25A located on the left side of the inner screen 20B are aligned in the front direction when viewed from the inside of the room. On the other hand, when the opening of the frame body 10 is open, the outer screen 20A and the inner screen 20B are at least partially overlapping in the front direction. Hereinafter, the vertical frames 25A and 25B are referred to as the aligned frame portions 25A and 25B.

[0013] The vertical frames 22A, 22B, upper frames 23A, 23B, lower frames 24A, 24B, and joint frames 25A, 25B that make up the shoji screens 20A, 20B are all extruded shapes molded from resin, and are configured to have a cross-sectional shape that is almost uniform over the entire length along the longitudinal direction. In this embodiment, the vertical frames 22A, 22B, upper frames 23A, 23B, and lower frames 24A, 24B are particularly configured with the same cross-sectional shape to make up the shoji screens 20A, 20B. The joint frames 25A, 25B are configured with different cross-sectional shapes.

[0014] On the other hand, the vertical frames 11, 12, upper frame 13, and lower frame 14 that make up the frame 10 are composite types that are comprised of metal shapes made of extruded shapes formed from metal such as aluminum alloy, and resin shapes made of extruded shapes formed from resin. The metal shapes and resin shapes are also configured to have a substantially uniform cross-sectional shape over the entire length along the longitudinal direction.

[0015] As shown in Figures 2 and 3, each component constituting the vertical frames 11, 12, upper frame 13, and lower frame 14 is attached to the building frame or a frame fixed to the frame via mounting screws 400.

[0016] Below, we will explain the configuration of the vertical frames 11, 12, upper frame 13, and lower frame 14 that make up the frame and frame body 10 of the shoji screens 20A, 20B, as well as the characteristics of the present invention. For convenience, in the following, the vertical frame located on the left side as viewed from inside the room will be referred to as the left vertical frame 11, and the vertical frame located on the right side will be referred to as the right vertical frame 12.

[0017] (Stile 22A) As shown in FIG. 3, the vertical frame 22A is formed by integrally forming a frame base 31, a glass clamping piece 32, an inner rail guide 33, and an outer rail guide 34. The frame base 31 is hollow and has a substantially rectangular cross section. A ridge 35 is provided on the edge of the inner circumference of the frame base 31 that faces the outside of the room. The ridge 35 clamps the insulating glass 21A between the glass clamping piece 32 and the frame base 31. The glass clamping piece 32 protrudes from the edge of the inner circumference of the frame base 31 that faces the inside of the room to the inner side. The inner rail guide 33 protrudes from the edge of the outer circumference of the frame base 31 that faces the inside of the room to the outer side, and the outer rail guide 34 protrudes from the edge of the outer circumference of the frame base 31 that faces the outside of the room to the outer side. A gap is provided between the inner rail guide 33 and the outer rail guide 34, and a tension material 36 is provided at the portions facing each other.

[0018] (Stile 25A) The vertical frame 25A that constitutes the joining frame parts 25A, 25B is formed integrally with a frame base 31 and a glass clamping piece 32. The frame base 31 is hollow and has a roughly rectangular cross section. A press-in edge 35 is provided on the inner periphery of the frame base 31 at the edge facing the outside of the room. The press-in edge 35 clamps the insulating glass 21A between itself and the glass clamping piece 32. The glass clamping piece 32 protrudes inward from the inner periphery of the frame base 31 at the edge facing the inside of the room.

[0019] (Left vertical frame 11) As shown in FIG. 3, the left vertical frame 11 has a metal profile 40 and resin profiles 51 and 52. The resin profile 51 is engaged and integrated with the metal profile 40 via a plurality of claw structures. The resin profile 52 is engaged and integrated with the resin profile 51 via a plurality of claw structures. The metal profile 40 and the resin profiles 51 and 52 each have a cross-sectional shape having a plurality of plate portions extending in different directions, and extend in the up-down direction. The resin profiles 51 and 52 are provided so as to cover a portion of the visible surface on the inner periphery side of the metal profile 40.

[0020] (Right vertical frame 12) As shown in Fig. 3, the right vertical frame 12 has a metal profile 60 and a resin profile 70 that is engaged and integrated with the metal profile 60 via a plurality of claw structures. The metal profile 60 and the resin profile 70 each have a cross-sectional shape with a plurality of plate portions extending in different directions, and extend in the up-down direction. The resin profile 70 is provided so as to cover a portion of the visible surface on the inner periphery side of the metal profile 60.

[0021] (Top frame 13) As shown in FIG. 2, the metal shaped member 80 of the upper frame 13 is composed of an inner upper metal molding 80A on the indoor side and an outer upper metal molding 80B on the outdoor side. The inner upper metal molding 80A and the outer upper metal molding 80B are connected to each other by a bridge material 80C formed from a heat insulating material, and are thermally insulated without contacting each other. The resin shaped member 90 of the upper frame 13 is composed of an inner upper resin molding 90A on the indoor side and an outer upper resin molding 90B on the outdoor side. The metal shaped member 80 and the resin shaped member 90 each have a length covering the entire length of the portion located between the left and right vertical frames 11 and 12 in the upper frame 13. The resin shaped member 90 is provided so as to cover a part of the visible surface on the inner periphery side of the metal shaped member 80.

[0022] (Bottom frame 14) As shown in Figs. 2 and 4, the metal profile 120 of the lower frame 14 is configured with an inner lower metal molding 120A on the indoor side and an outer lower metal molding 120B on the outdoor side. The inner lower metal molding 120A and the outer lower metal molding 120B are connected to each other by a bridge material 120C. The bridge material 120C is made of a heat insulating resin material such as urethane. In other words, the inner lower metal molding 120A and the outer lower metal molding 120B are thermally insulated without contacting each other. The inner lower metal molding 120A, the outer lower metal molding 120B, and the bridge material 120C each have a length that covers the entire length of the part of the lower frame 14 located between the left and right vertical frames 11, 12. The inner lower metal molding 120A is an example of a first metal shape member on the indoor side, the outer lower metal molding 120B is an example of a second metal shape member on the outdoor side, and the bridge member 120C is an example of a connecting member.

[0023] Moreover, the lower part of the outer lower metal molding body 120B has a closed cross-sectional structure, and houses the reinforcing member 150 therein. The reinforcing member 150 is provided with a thermally expandable member 303. The reinforcing member 150 and the thermally expandable member 303 will be described later. Moreover, a thermally expandable member 304 is provided on the inner periphery of the inner lower metal molding body 120A, the outer lower metal molding body 120B, and the bridge member 120C. These thermally expandable members 303, 304 are heat-foaming materials, such as graphite, that foam and expand when heated.

[0024] As shown in Fig. 4, the inner lower metal molding 120A is integrally formed with a lower inner projection plate portion 121, a lower inner sight plate portion 122, a lower inner pocket portion 123, a lower inner end sight plate portion 124, and a lower support plate portion 125. The lower inner projection plate portion 121, the lower inner sight plate portion 122, the lower inner pocket portion 123, the lower inner end sight plate portion 124, and the lower support plate portion 125 all extend in an extension direction E (see Figs. 1 and 3, etc.).

[0025] The lower inner sight plate portion 121 is a plate extending along the sight direction. The lower inner sight plate portion 122 constitutes the metal rail portion of the lower horizontal rail 14B on the inner circumference side for guiding the inner sash 20B. The lower inner sight plate portion 122 extends upward, i.e., toward the inner circumference side, from the edge portion on the outside of the room of the inner circumference side sight surface 121b of the lower inner sight plate portion 121, and then extends toward the inside of the room. The extending edge portion of the lower inner sight plate portion 122 extending toward the inside of the room is provided with a door roller guide portion 122a and a lower fitting portion 122b. The door roller guide portion 122a is a protruding portion protruding toward the inner circumference side, and guides the sliding of the inner sash 20B via the door roller 26B. The lower fitting portion 122b is for restricting the movement in the projection direction away from each other by fitting into the lower fitting portion 142a of the resin profile 140 described later. In the illustrated example, the lower fitting portion 122b is formed by extending from the extended edge portion located on the indoor side of the lower inner sight plate portion 122 toward the outer periphery, bending toward the indoor side, and further bending toward the inner periphery. The lower inner pocket portion 123 is a groove-shaped recess for accommodating the bridge material 120C, and is provided so as to open to the outside of the room at the edge portion on the indoor side of the lower inner sight plate portion 121. The lower inner end sight plate portion 124 extends along the projection direction from the edge portion on the indoor side of the lower inner end sight plate portion 121. A lower fixing sight plate portion 126 is provided in the portion located on the outer periphery of the lower inner end sight plate portion 124, which is gradually inclined toward the outer periphery toward the room. The lower support plate 125 extends from the middle between the lower inner pocket 123 and the lower inner end sight plate 124 toward the outer periphery of the lower inner projection plate 121. The lower inner end sight plate 124, the lower fixing projection plate 126, and the lower support plate 125 are configured so that their respective outer periphery edges are positioned on the same plane that is approximately horizontal along the projection direction.

[0026] This inner lower metal molding 120A has a plurality of lower engagement receiving portions 121a provided on the portion that becomes the inner periphery of the lower inner projection plate portion 121. The lower engagement receiving portions 121a are for maintaining a resin profile 140, described below, attached to the inner periphery of the lower inner projection plate portion 121. In the illustrated example, the lower engagement receiving portions 121a are provided on the sighting surface of the lower inner end sighting plate portion 124 facing the outside of the room and on the sighting surface of the lower inner projection plate portion 121 that faces the lower fitting portion 122b.

[0027] The outer lower metal molding 120B is integrally formed with a lower outer projection plate portion 127, a lower outer sight plate portion 128, a lower outer pocket portion 129, a lower outer cover plate portion 130, an outer side wall 132, a lower end wall 133, and an inner side wall 134. The lower outer projection plate portion 127, the lower outer sight plate portion 128, the lower outer pocket portion 129, the lower outer cover plate portion 130, the outer side wall 132, the lower end wall 133, and the inner side wall 134 all extend in the extension direction E (see Figures 1 and 3, etc.).

[0028] The lower outer sight plate portion 127 is a plate extending along the sight direction. The lower outer sight plate portion 127 extends in the indoor / outdoor direction and in the extension direction E. The lower outer sight plate portion 128 constitutes the metal rail portion of the outer lower horizontal rail 14A for guiding the outer screen 20A, and extends from the edge portion on the outdoor side of the lower outer sight plate portion 127 toward the inner circumference side, and then extends toward the indoor side. The extending edge portion of the lower outer sight plate portion 128 extending toward the indoor side is provided with a wheel guide portion 128a and a lower fitting portion 128b. The wheel guide portion 128a is a protruding portion protruding toward the inner circumference side, and guides the sliding of the outer screen 20A via the wheel 26A. The lower fitting portion 128b is for restricting the movement in the projection direction away from each other by fitting into the lower fitting portion 146a of the resin profile 140 described later. In the illustrated example, the lower fitting portion 128b is formed by extending from the extended edge of the lower outer sight plate portion 128 toward the outer periphery, bending toward the interior side of the room, and further bending toward the inner periphery. The edge portion located on the inner periphery of the lower outer sight plate portion 128 is configured so that the position in the vertical direction is approximately the same as that of the lower inner sight plate portion 122. The lower outer pocket portion 129 is a groove-shaped recess for accommodating the bridge material 120C, and is provided so as to open into the room at the edge portion on the interior side of the lower outer sight plate portion 127. The lower outer cover plate portion 130 extends toward the inner periphery from the edge portion on the exterior side of the lower outer sight plate portion 127.

[0029] This outer lower metal molding 120B has a plurality of lower engagement receiving portions 127a provided on the portion that becomes the inner periphery of the lower outer projection plate portion 127. The lower engagement receiving portions 127a are for maintaining a resin profile 140 (described later) attached to the inner periphery of the lower outer projection plate portion 127. In the illustrated example, the lower engagement receiving portions 127a are provided on the portion of the lower outer pocket portion 129 facing the outside of the room and on the projection surface of the lower outer projection plate portion 127 that faces the lower fitting portion 128b.

[0030] In the outer lower metal molding 120B, a hollow portion 131 is formed in the portion on the outer peripheral side of the lower outer projection plate portion 127. The lower outer projection plate portion 127, the outer side wall 132, the lower end wall 133, and the inner side wall 134 form a closed cross section. The hollow portion 131 is a space surrounded by the lower outer projection plate portion 127, the outer side wall 132, the lower end wall 133, and the inner side wall 134. The outer side wall 132 protrudes downward in the sight direction from the vicinity of the end portion on the outside of the room of the lower outer projection plate portion 127. The inner side wall 134 protrudes downward in the sight direction from the lower outer pocket portion 129. The lower end wall 133 extends along the sight direction between the lower end of the outer side wall 132 and the lower end of the inner side wall 134. The lower end wall 133 is positioned below, i.e., away from, the lower outer periphery of the lower outer projection plate portion 127, and the outer side wall 132 is positioned away from the inner side wall 134 on the outside of the room.

[0031] In addition, a lower wind stopper member 110B (see FIG. 12) is attached to the metal profile 120 of the above-mentioned lower frame 14 between the lower inner sight plate portion 122 of the inner lower metal molding 120A and the lower outer sight plate portion 128 of the outer lower metal molding 120B. The lower wind stopper member 110B is molded from an elastic resin material, and is disposed on the projected surface on the inner periphery of the lower frame 14 in a portion corresponding to the joint frame portions 25A, 25B, in order to restrict the flow of air between the inside and outside of the room.

[0032] The resin profile 140 of the lower frame 14 is configured to include an inner lower resin molding 140A on the indoor side and an outer lower resin molding 140B on the outdoor side.

[0033] The inner lower resin molding 140A is formed by integrally molding the lower inner cover base 141, the lower inner rail cover part 142, the lower sighting cover part 143, and the lower frame cover part 144. The lower inner cover base 141 is a flat plate that covers a part of the inner periphery of the lower inner sighting plate part 121 of the metal profile 120. The lower inner rail cover part 142 is for forming the resin rail part of the lower horizontal rail 14B corresponding to the inner sash 20B, and extends from the lower inner cover base 141 toward the inner periphery. The lower inner rail cover part 142 has a lower fitting part 142a on the edge part on the inner periphery side. The lower fitting part 142a extends from the extended edge part of the lower inner rail cover part 142 toward the outside of the room, and then bends toward the outer periphery side. The lower inner rail cover part 142 is fitted with the lower fitting part 142b of the lower inner sighting plate part 122, thereby covering the sighting surface of the lower inner sighting plate part 122 facing the room, while leaving a space between the lower inner sighting plate part 122 and the lower inner sighting plate part 122. The lower sighting cover part 143 extends from the edge part on the room side of the lower inner cover base part 141 toward the inner periphery, thereby covering a part of the sighting surface of the lower inner end sighting plate part 124 facing the outside of the room. The lower frame cover part 144 extends from the edge part on the inner periphery of the lower sighting cover part 143 toward the room side in the sighting direction.

[0034] This inner lower resin molding 140A is provided with a plurality of engaging protrusions 141a on the outer circumferential side of the lower inner cover base 141. The engaging protrusions 141a extend from the lower inner cover base 141 toward the outer circumferential side, and engaging claws 141b are provided on the extending edge. The engaging claws 141b engage with lower engagement receiving portions 121a provided on the inner lower metal molding 120A, thereby maintaining the lower inner cover base 141 covering the projection surface on the inner circumferential side of the lower inner projection plate portion 121 while securing a space between the lower inner cover base 141 and the lower inner projection plate portion 121.

[0035] The outer lower resin molding 140B is formed by integrally molding the lower outer cover base 145 and the lower outer rail cover part 146. The lower outer cover base 145 is a flat plate that covers the lower outer projection plate part 127 and the bridge material 120C of the metal profile 120. A small gap is provided between the edge part located on the indoor side of the lower outer cover base 145 and the sight surface facing the outdoor side of the lower inner sight plate part 122. The lower outer rail cover part 146 is for forming the resin rail part of the lower horizontal rail 14A corresponding to the outer sash 20A, and extends from the edge part located on the outdoor side of the lower outer cover base 145 toward the inner periphery. The lower outer rail cover part 146 has a lower fitting part 146a on the inner periphery edge. The lower fitting portion 146a extends from the extended edge of the lower outer rail cover portion 146 toward the outside of the room, and then bends toward the outer periphery. The lower outer rail cover portion 146 fits the lower fitting portion 146a into the lower fitting portion 128b of the lower outer sight plate portion 128, thereby covering the sight surface of the lower outer sight plate portion 128 facing the room, while leaving a space between the lower outer sight plate portion 128 and the lower outer sight plate portion 128.

[0036] This outer lower resin molding 140B is provided with a plurality of engaging protrusions 145a on the outer peripheral side of the lower outer cover base 145. The engaging protrusions 145a extend from the lower outer cover base 145 toward the outer peripheral side, and engaging claws 145b are provided on the extending edge. The engaging claws 145b engage with lower engaging receivers 127a provided on the outer lower metal molding 120B, thereby maintaining the lower outer cover base 145 covering the projection surface on the inner peripheral side of the lower outer projection plate 127 while securing a space between the lower outer cover base 145 and the lower outer projection plate 127.

[0037] As shown in Figs. 5 and 6, the metal profile 120 of the lower frame 14 is provided with a reinforcing member 150 that reinforces the outer lower metal molding 120B on the outdoor side. The reinforcing member 150 is accommodated in the hollow portion 131 of the outer lower metal molding 120B. In other words, the reinforcing member 150 is located below the lower outer projection plate portion 127. The lower outer projection plate portion 127 is an example of a horizontal wall. In this embodiment, as an example, the reinforcing member 150 extends in the extension direction E (see Figs. 1 and 3, etc.) at a position that is below the outdoor side shoji 20A when the frame body 10 is closed. For this reason, as shown in Fig. 4, depending on the position in the extension direction E, the reinforcing member 150 does not exist. However, this is not limited to this, and the reinforcing member 150 may be provided over approximately the entire length of the lower frame 14 in the extension direction E.

[0038] The reinforcing member 150 has a bottom wall 151, a support wall 152, a top wall 153, and a protruding wall 154. The bottom wall 151, the support wall 152, the top wall 153, and the protruding wall 154 extend in the extension direction E. The bottom wall 151 extends in the extension direction approximately along the inner peripheral surface of the lower end wall 133. The top wall 153 extends in the extension direction approximately along the outer peripheral surface of the lower outer projection plate portion 127. The support wall 152 extends in the vertical direction while bending in a crank shape between the outdoor end of the bottom wall 151 and the outdoor end of the top wall 153. The support wall 152 has a protruding portion 152a protruding to the outdoor side in the middle of the vertical direction. As shown in FIG. 5, the protruding portion 152a is formed in an approximately U-shape that is open to the indoor side when viewed in the extension direction. The protruding wall 154 is formed by extending the lower wall of the protruding portion 152a toward the indoor side, and protrudes from the supporting wall 152 to approximately the center of the hollow portion 131 toward the indoor side.

[0039] In the cross section of FIG. 5, the lower outer projection plate portion 127 is provided with a through hole 127b. The through hole 127b functions as a drain hole. A notch 153a is provided in a portion of the top wall 153 that overlaps with the through hole 127b so that the top wall 153 does not cover the lower side of the through hole 127b. In addition, a thermally expandable member 303 is provided on the lower wall and the protruding wall 154 of the protruding portion 152a. With this configuration, the thermally expandable member 303 expands in the event of a fire to block the through hole 127b, and thus the spread of fire through the through hole 127b can be prevented. Note that a through hole may be provided in the top wall 153 instead of the notch 153a. In the example of Figure 5, three thermally expandable members 303 are stacked on the lower wall and protruding wall 154 of the protrusion portion 152a, but the number of thermally expandable members 303 is not limited to three, and the thermally expandable members 303 do not have to be stacked.

[0040] (Structure for preventing separation of outer lower metal molding body 120B from inner lower metal molding body 120A) In the lower frame 14 having the above-mentioned configuration, if the bridge material 120C is burned during a fire, the connection between the inner lower metal forming body 120A and the outer lower metal forming body 120B by the bridge material 120C will be released. If the outer lower metal forming body 120B is separated from the inner lower metal forming body 120A as a result, there is a risk that problems will occur, such as the gap between the inner lower metal forming body 120A and the outer lower metal forming body 120B widening, reducing fire resistance, or the outer lower metal forming body 120B falling off the lower frame 14.

[0041] Therefore, in this embodiment, the lower frame 14 has a structure for preventing the outer lower metal molding body 120B from being separated from the inner lower metal molding body 120A, as shown in FIG. 6. The separation prevention structure has a metal member 250 and a fastener 260. The metal member 250 is fixed to the outer lower metal molding body 120B via the fastener 260. The metal member 250 also has a hook portion 252 for hooking the metal member 250 so as not to separate from the inner lower metal molding body 120A to the outside of the room. In this configuration, when the bridge material 120C is burned, the outer lower metal molding body 120B cannot move to the outside of the room even if it tries to move to the outside of the room after the hook portion 252 is hooked to the inner lower metal molding body 120A. That is, in this embodiment, the separation prevention structure restricts the movement of the outer lower metal forming body 120B by simply catching the metal member 250 on the inner lower metal forming body 120A. Therefore, the separation prevention structure can be realized with a simpler configuration than a structure in which the metal member 250 is fixed to the inner lower metal forming body 120A.

[0042] Specific examples of the metal member 250 and the fastener 260 will be described in detail below with reference to Figures 6 to 11. Note that Figures 7 to 9 show the orientation of the metal member 250 in a state where it is assembled into the lower frame 14.

[0043] Metal member 250 and fastener 260 are made of a metal material such as an iron-based material or an aluminum-based material, and therefore will not burn even in a fire or the like, and will not be thermally deformed in a high-temperature environment, so the separation prevention function of metal member 250 and fastener 260 will not be impaired.

[0044] The metal member 250 has an extension portion 251 , a hook portion 252 , a side wall 253 , and a fixing portion 254 .

[0045] 6 and 7, the extension portion 251 extends generally along the indoor-outdoor direction above the lower outward projection plate portion 127. Also, as shown in Fig. 8, the extension portion 251 extends generally along the extension direction E of the upper frame 13. The extension portion 251 has a generally rectangular and plate-like shape.

[0046] As shown in Fig. 6, the lower inner sighting plate portion 122 is provided with a through hole 122c penetrating in the indoor / outdoor direction. The extension portion 251 penetrates the through hole 122c. On the indoor side of the lower inner sighting plate portion 122, the extension portion 251 is located above the bridge material 120C and the lower inner sighting plate portion 121. The portion of the lower inner sighting plate portion 122 that protrudes upward from the sighting surface 121b is an example of a vertical wall.

[0047] 6 and 7, the hook portion 252 protrudes upward from the indoor end of the extension portion 251 with a gap therebetween, generally along the indoor surface of the lower inner sight plate portion 122. Also, as shown in Fig. 8, the hook portion 252 extends generally along the extension direction E of the lower frame 14. The hook portion 252 has a generally rectangular and plate-like shape.

[0048] 6 to 9, the side walls 253 protrude downward by a predetermined width in the indoor / outdoor direction from both ends of the extension portion 251 in the extension direction E. An outdoor side portion 253a of the side wall 253 protrudes further downward than an indoor side portion of the side wall 253. Both of the two side walls 253 have a plate-like shape.

[0049] As shown in Figs. 8 and 9, the fixing portion 254 protrudes from the lower end of the outdoor portion 253a of one of the two side walls 253 in approximately the extension direction E so as to move away from the other of the two side walls 253. The fixing portion 254 also extends in the indoor-outdoor direction. The fixing portion 254 has an approximately rectangular and plate-like shape. As shown in Fig. 6, the fixing portion 254 is located above the lower outer projection plate portion 127, extends approximately along the inner peripheral projection surface of the lower outer projection plate portion 127, and is in contact with the inner peripheral projection surface. The fixing portion 254 has an approximately rectangular and plate-like shape.

[0050] As shown in Figs. 6 to 9, the fixing portion 254 is provided with a through hole 254a through which the fastener 260 penetrates in the vertical direction. As shown in Fig. 6, the lower outer projection plate portion 127 is provided with a through hole 127c penetrating in the vertical direction at a position overlapping with the through hole 254a in the vertical direction. In addition, the top wall 153 of the reinforcing member 150 is provided with a fastening hole 153b penetrating in the vertical direction at a position overlapping with the through hole 254a and the through hole 127c in the vertical direction. The fastener 260 is a screw having a head 260a on the upper side, and the fastening hole 153b is, for example, a female screw hole. In this case, the fastener 260 is screwed into the fastening hole 153b from above using a tool such as a screwdriver. As a result, the fastener 260, the fastener 254, the lower outer projection plate 127, and the top wall 153 are integrated together with the fastener 260a and the lower outer projection plate 127 sandwiched between the head 260a and the top wall 153. That is, the fastener 260 integrates the metal member 250, the outer lower metal molding 120B, and the reinforcing member 150.

[0051] The metal member 250 is aligned with the outer lower resin molding body 140B in the extending direction E. This configuration is achieved by partially cutting out the outer lower resin molding body 140B at the location where the metal member 250 is provided.

[0052] 6 to 9, the extension 251 is provided with a thermal expansion member 306 so as to cover the upper surface of the extension 251, i.e., the visible surface on the inner periphery side. The thermal expansion member 306 is attached to the extension 251 via an adhesive, double-sided tape, or the like. The thermal expansion member 306 is the same as the thermal expansion members 303 and 304 described above, and is a heat-foaming material such as graphite that foams and expands when heated. Here, the upper surface of the extension 251 faces the space between the shoji screen 20A and the shoji screen 20B. That is, the thermal expansion member 306 is attached to the extension 251 so as to face the space between the shoji screen 20A and the shoji screen 20B.

[0053] The hooking portion 252 is provided with a thermal expansion member 307 so as to cover the outer surface facing the lower inner sight plate portion 122, i.e., the outdoor sight plate. The thermal expansion member 307 is attached to the hooking portion 252 via adhesive, double-sided tape, or the like. The thermal expansion member 307 is also the same as the thermal expansion members 303, 304, and 306, and is a heat-expanding foaming material, such as graphite, that foams and expands when heated. The thermal conductivity of the thermal expansion member 307 is lower than the thermal conductivity of the lower inner sight plate portion 122 and the hooking portion 252, which are made of a metal material. The thermal expansion member 307 is an example of an intervening member interposed between the lower inner sight plate portion 122 and the hooking portion 252.

[0054] As shown in Figs. 10 and 6, the through hole 122c through which the extension 251 penetrates is provided at the lower base portion, i.e., the lower portion, of the lower inner sight plate portion 122. The through hole 122c functions as a drain hole that drains water from the indoor side to the outdoor side of the lower inner sight plate portion 122. In this embodiment, the drain hole is also used as the through hole 122c through which the extension portion 251 penetrates in the indoor / outdoor direction. This reduces the manufacturing effort compared to the case where the drain hole and the through hole 122c are formed separately. Note that the lower inner sight plate portion 122 is provided with a plurality of drain holes at approximately regular intervals in the extension direction E.

[0055] FIG. 11 shows the procedure for attaching the metal member 250 to the lower frame 14. First, the metal member 250 is tilted so that the end on the outdoor side is located upward and the end on the indoor side is located downward, and the hook portion 252 is passed through the through hole 122c from the outdoor side to the indoor side (S1). Next, with the base portion of the hook portion 252 penetrating the through hole 233c, the metal member 250 is rotated so that the fixing portion 254 approaches the lower outer projection plate portion 127 (S2). This brings the fixing portion 254 into contact with the lower outer projection plate portion 127. In this state, the metal member 250 is slid and positioned on the lower outer projection plate portion 127 so that the through hole 254a overlaps with the through hole 127c and the connecting hole 153b in the vertical direction. Then, in a state in which the through hole 254a, the through hole 127c, and the coupling hole 153b are substantially overlapped in the vertical direction, the coupling device 260 is screwed into the coupling hole 253b from above (S3).

[0056] 12, the metal member 250 and the thermal expansion members 306, 307 are arranged so as to overlap the lower part of the joining frame parts 25A, 25B. The lower wind stop member 110B is arranged so as to be adjacent to the first metal member 210, the second metal member 220, and the thermal expansion member 301 in the extension direction E and to overlap the upper part of the joining frame parts 25A, 25B. The lower wind stop member 110B, the metal member 250, and the thermal expansion members 306, 307 may be arranged in the opposite order to that in FIG. 12 in the extension direction E.

[0057] 12, through holes 127b are provided in the lower outer projection plate portion 127 in a portion of the extension direction E of the lower frame 14. A notch 153a is provided in the top wall 153 of the reinforcing member 150, which overlaps with the through holes 127b in the vertical direction and extends in the extension direction E so as to expose the through holes 127b.

[0058] As described above, in this embodiment, the indoor lower metal molding 120A has an inner peripheral projection surface 121b and a lower inner sighting plate 122. The lower inner sighting plate 122 protrudes upward from the projection surface 121b and extends in the extension direction E. The lower inner sighting plate 122 is provided with a through hole 122c penetrating in the indoor / outdoor direction. The metal member 250 has a fixing portion 254, an extension portion 251, and a hook portion 252. The fixing portion 254 is fixed to the outer lower metal molding 120B. The extension portion 251 extends in the indoor / outdoor direction and penetrates the through hole 122c. The hook portion 252 protrudes upward from the extension portion 251 along the indoor surface of the lower inner sighting plate 122. In this configuration, when the bridge material 120C is burned and the outer lower metal molding 120B tries to separate from the inner lower metal molding 120A to the outside of the room, the hook portion 252 of the metal member 250 is caught on the lower inner sight plate portion 122. This makes it impossible for the metal member 250 and the outer lower metal molding 120B to separate from the inner lower metal molding 120A. According to the present invention, separation between the inner lower metal molding 120A and the outer lower metal molding 120B during a fire can be suppressed without fixing the metal member 250 to the inner lower metal molding 120A. In other words, the structure for suppressing separation between the inner lower metal molding 120A and the outer lower metal molding 120B can be realized more simply, and the effort and cost of manufacturing the lower frame having this structure and therefore the fittings can be reduced.

[0059] In addition, in this embodiment, the outer lower metal molding 120B has a lower outer projection plate portion 127 extending in the indoor / outdoor direction and the extension direction, and a reinforcing member 150 that reinforces the outer lower metal molding 120B below the lower outer projection plate portion 127. The fixing portion 254 and the extension portion 251 are located above the lower outer projection plate portion 127. The metal member 250 is fixed to the reinforcing member 150 via a fastener 260 that penetrates the lower outer projection plate portion 127. According to this configuration, the metal member 250 is fixed to the outer lower metal molding 120B and the reinforcing member 150. Therefore, the metal member 250 can be fixed more firmly to the lower frame 14. In addition, the fastener 260 can be used both to connect the outer lower metal molding 120B to the reinforcing member 150 and to connect the metal member 250 to the lower frame 14. Therefore, compared to the case where separate fasteners are provided for each of these connections, the configuration can be simplified, and the manufacturing effort and costs can be reduced.

[0060] Furthermore, in this embodiment, a thermal expansion member 307 having a lower thermal conductivity than the lower inner sight plate 122 and the hook portion 252 is provided between the lower inner sight plate 122 and the hook portion 252. With this configuration, the thermal expansion member 307 can suppress thermal conduction between the hook portion 252 of the metal member 250 thermally connected to the outer lower metal molding body 120B and the lower inner sight plate 122 of the inner lower metal molding body 120A. Therefore, the heat resistance and moisture resistance of the lower frame 14 can be improved compared to when the thermal expansion member 307 is not provided.

[0061] In this embodiment, a thermal expansion member 307 is interposed between the lower inner sight plate 122 and the hook portion 252. According to this configuration, in the event of a fire, the thermal expansion member 307 thermally expands to block a part of the space between the outer screen 20A, the inner screen 20B, and the lower frame 14, thereby suppressing the spread of flames through the space. In addition, in this embodiment, it can be said that a member having a lower thermal conductivity than the lower inner sight plate 122 and the hook portion 252 is used in common with the thermal expansion member 307. According to this configuration, compared to a case in which a member having a lower thermal conductivity and the thermal expansion member 307 are provided separately, the configuration can be simplified, and the manufacturing effort and cost can be reduced.

[0062] In this embodiment, the thermally expandable member 306 is attached to the extension 251 so as to face the space between the inner screen 20B and the outer screen 20A. According to this configuration, in the event of a fire, the thermally expandable member 306 can thermally expand to block a part of the space between the outer screen 20A, the inner screen 20B, and the bottom frame 14, thereby suppressing the spread of flames through that space.

[0063] In addition, in this embodiment, the metal member 250 is located at least below the joint frame parts 25A, 25B. According to this configuration, the metal member 250 located at approximately the center of the extension direction E of the lower frame 14 can suppress the separation between the inner lower metal molding body 120A and the outer lower metal molding body 120B. Therefore, with a smaller number of metal members 250, the separation between the inner lower metal molding body 120A and the outer lower metal molding body 120B can be suppressed more efficiently. Also, in this embodiment, the metal member 250 is provided with a thermal expansion member 307. According to this configuration, in the event of a fire, the gap between the joint frame parts 25A, 25B and the lower frame 14 can be blocked by the expanded thermal expansion member 307. In this case, the thermal expansion member 307 can prevent the flame from spreading through the gap.

[0064] In the above-mentioned embodiment, a sliding window in which both the outer and inner screens 20A and 20B slide relative to the frame 10 is exemplified, but it is also possible to configure it as a single sliding window in which only one of the screens slides. Also, the screens 20A and 20B are exemplified as having frames 22A, 22B, 23A, 23B, 24A, 24B, 25A, and 25B molded from resin. However, the screen is not limited to this configuration, and may have a frame in which the part facing the outside of the room is molded from a metal such as an aluminum alloy and the part facing the inside of the room is molded from resin.

[0065] In the above embodiment, the metal member 250 is provided at only one location in the center in the extension direction E. However, the present invention is not limited to this.

[0066] In the above embodiment, the thermally expandable member 307 is provided in the hook portion 252, but the present invention is not limited to this, and the thermally expandable member 307 may be provided in the lower inner sight plate portion 122. In addition, a plurality of thermally expandable members 307 provided in one of the hook portion 252 and the lower inner sight plate portion 122 may be provided in the gap between the hook portion 252 and the lower inner sight plate portion 122. In addition, an intervening member that does not have thermal expansion and has a lower thermal conductivity than the hook portion 252 and the lower inner sight plate portion 122 may be provided in the gap.

[0067] In the building fixture of the present invention, the second metal profile has a side wall extending in the indoor / outdoor direction and in the extension direction, and a reinforcing member that reinforces the second metal profile below the side wall, the fixing portion and the extension portion are located above the side wall, and the metal member is fixed to the reinforcing member via a fastener that penetrates the side wall. According to the present invention, the metal member is fixed to the second metal profile and the reinforcing member. Therefore, the metal member can be more firmly fixed to the lower frame. Also, the fastener can be used to connect the second metal profile and the reinforcing member and to connect the metal member to the lower frame. Therefore, compared to a case where separate fasteners are provided for each of these connections, the configuration can be simplified and the manufacturing effort and cost can be reduced.

[0068] In the fitting of the present invention, an intervening member having a lower thermal conductivity than the vertical wall and the hook portion is provided between the vertical wall and the hook portion. According to the present invention, the intervening member can suppress thermal conduction between the hook portion (metal member) thermally connected to the second metal profile and the vertical wall (first metal profile), thereby further improving the heat resistance and moisture resistance of the lower frame compared to when the intervening member is not present.

[0069] In the fitting of the present invention, the interposed member has thermal expansion properties. According to the present invention, in the event of a fire, the intervening member thermally expands to partially block the space between the indoor shoji screen and the outdoor shoji screen and the sill frame, thereby suppressing the spread of flames through the space. In addition, compared to a case in which the intervening member and the thermally expandable member are provided separately, the structure can be simplified, and the manufacturing effort and cost can be reduced.

[0070] In the fitting of the present invention, the shoji screen has an indoor shoji screen and an outdoor shoji screen that overlap each other when the frame is open, and the fitting is equipped with a thermally expandable member attached to the extension portion so as to face the space between the indoor shoji screen and the outdoor shoji screen. According to the present invention, in the event of a fire, the intervening member thermally expands, thereby blocking part of the space between the shoji screen on the inside of the room and the shoji screen and the bottom frame on the outside of the room, thereby suppressing the spread of flames through that space.

[0071] In the building fixture of the present invention, the shoji screen has an indoor shoji screen and an outdoor shoji screen that overlap each other when the frame body is open, and the metal member is located at least below the joining frame portion where the indoor shoji screen and the outdoor shoji screen overlap in the indoor / outdoor direction when the frame body is closed. According to the present invention, the metal member located at the approximate center of the extension direction of the lower frame can suppress the separation between the first metal profile and the second metal profile. Therefore, the separation between the first metal profile and the second metal profile can be suppressed more efficiently with a smaller number of metal members. Furthermore, if a thermally expandable member is provided in the metal member, in the event of a fire, the gap between the joint frame and the lower frame can be blocked by the expanded thermally expandable member. In this case, the thermally expandable member can prevent the spread of flames through the gap. [Explanation of symbols]

[0072] 10 frame body, 11 left vertical frame (vertical frame), 12 right vertical frame (vertical frame), 13 upper frame, 14 lower frame, 20A outer screen (screen), 20B inner screen (screen), 25A, 25B joint frame portion, 120A inner lower metal molding body (first metal shaped material), 120B outer lower metal molding body (second metal shaped material), 120C bridge material (connecting member), 121b projection surface, 122 lower inner sight plate portion (vertical wall), 122c through hole, 127 lower outer sight plate portion (horizontal wall), 150 reinforcing member, 250 metal member, 251 extension portion, 252 hook portion, 254 fixing portion, 260 fastener, 306 thermal expansion member, 307 thermal expansion member (intervening member).

Claims

1. The door is provided with a frame body formed of left and right vertical frames, an upper frame, and a lower frame assembled on all four sides, and a shoji screen arranged on the frame body in a state in which it can slide in the extension direction of the lower frame. The lower frame is a fitting having a first metal shape on the indoor side, a second metal shape on the outdoor side, and a connecting member that is located between the first metal shape and the second metal shape and is made of a resin material and connects the first metal shape and the second metal shape, The first metal profile has an inner peripheral side prospective surface and a vertical wall protruding upward from the prospective surface and extending in the extension direction and having a through hole penetrating in the indoor / outdoor direction, The lower frame is a fitting comprising a metal member having a fixing portion fixed to the second metal profile, an extension portion extending in the indoor / outdoor direction and passing through the through hole, and a hook portion protruding upward from the extension portion along the indoor side surface of the vertical wall.

2. The second metal shape has a lateral wall extending in the indoor / outdoor direction and the extension direction, and a reinforcing member that reinforces the second metal shape below the lateral wall, The fixing portion and the extension portion are located above the lateral wall, The fixture according to claim 1 , wherein the metal member is fixed to the reinforcing member via a fastener that penetrates the side wall.

3. The fixture according to claim 1 , further comprising an intervening member between the vertical wall and the hook portion, the intervening member having a lower thermal conductivity than the vertical wall and the hook portion.

4. The fixture according to claim 3 , wherein the intermediate member has thermal expansion properties.

5. The shoji screen has an indoor shoji screen and an outdoor shoji screen that overlap each other when the frame body is open, The fixture according to claim 1, further comprising a thermal expansion member attached to the extension so as to face the space between the indoor shoji screen and the outdoor shoji screen.

6. The shoji screen has an indoor shoji screen and an outdoor shoji screen that overlap each other when the frame body is open, The metal member is located at least below the joint frame portion where the indoor side screen and the outdoor side screen overlap in the indoor / outdoor direction when the frame body is closed.

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