JP2019131972A - Fitting - Google Patents

Abstract

To provide a fitting that can reduce costs and improve work efficiency while ensuring sufficient fire prevention performance.SOLUTION: A fitting 10 includes an open frame 12 and a door panel 14 provided with a plurality of supporting devices 38a to 38c along a vertical direction of a depth directional face 40 that faces a vertical frame 12c so as to be supported by the open frame 12 for rotation relative thereto. The depth directional face 40 of the door panel 14 is provided at a position above the uppermost support 38a among the plurality of supports 38a to 38c with a thermally expandable member 50 that expands when heated and is provided at a position below the lowermost support 38c among the plurality of supports 38a to 38c with a thermally expandable member 51 that expands when heated.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a joinery that supports a shoji so that it can rotate with an opening frame.

  For example, a joinery such as a front door or a casement has a configuration in which an opening frame and a shoji are rotatably connected by a support (hinge). In this type of fitting, when the shoji heated during a fire warps, a through hole is formed between the prospective surface of the shoji and the opening frame to communicate the inside and outside of the door. There is concern to become.

  For example, Patent Literature 1 discloses a configuration in which a fireproof foam material is provided for each prospective surface of a door sliding door and a hanging foot. A fireproof foam is a thermally expandable member that expands when heated. In this configuration, the thermally expandable member is provided over the entire length in the longitudinal direction of each prospective surface of the door end fence and the suspension base fence, thereby closing the gap between the shoji and the opening frame and preventing the formation of the through hole. ing.

Japanese Utility Model Publication No. 3-125192

  By the way, when the above joinery is heated by a fire, in the suspension side part of the shoji, the part that is less restrained by the support, for example, the upper part of the uppermost support or the lowermost support There is a possibility that the lower part protrudes in the expected direction and a large through hole is formed. On the other hand, the through-hole formed in the part strongly restrained by the support, for example, the part sandwiched between the adjacent supports tends to be small. For this reason, providing the thermally expandable member over the entire length of the prospective surface on the suspending side as in the configuration of the above-mentioned Patent Document 1 results in excessive fire prevention performance and increases component costs. Moreover, since the shoji of such a joinery has a plurality of support tools attached to the prospective surface of the hanging heel, it is necessary to affix each of the support tools while avoiding each support tool when the thermal expansion member is provided over the entire length. , Work efficiency is low.

  The present invention has been made in consideration of the above-described problems of the prior art, and an object of the present invention is to provide a joinery that can reduce costs and improve work efficiency while ensuring sufficient fire prevention performance.

  The fitting according to the present invention includes an opening frame, a plurality of supporting tools attached along the vertical direction of one vertical frame of the opening frame, and the vertical direction of a prospective surface facing the one vertical frame. A shoji comprising a shoji that is pivotally supported with respect to the opening frame by being attached with a plurality of support tools, wherein the prospective surface of the shoji is the most of the plurality of support tools. At a position above the upper support, a first thermally expandable member that expands when heated is provided, and at a position below the lowest support among the plurality of supports, A second thermally expandable member that expands when heated is provided.

  According to such a configuration, when the joinery is heated by a fire, for example, the shoji has an arcuate warping deformation in which the center portion projects in the vertical direction in the vertical direction and the upper and lower end portions project in the outdoor direction. There is a case. In this case, since the 1st thermal expansible member and the 2nd thermal expansible member which were each provided in the up-and-down both ends of a shoji expand | swell quickly, the clearance gap between a shoji and a vertical frame is block | closed. Thereby, the upper and lower both ends of the shoji which can form the largest indoor and outdoor through-hole at the time of a fire can be block | closed with a 1st thermally expansible member and a 2nd thermally expansible member. As a result, it is possible to secure sufficient fireproof performance while suppressing the installation cost of the thermally expandable member and improving work efficiency.

  In the fitting according to the present invention, a thermally expandable member that expands when heated is provided at a position between the lowermost support tool and a support tool adjacent to the upper side of the lowermost support tool. It is good also as a structure which is not provided. That is, the position between the lowermost support tool and the support tool adjacent to the uppermost support tool is stronger than the upper and lower ends of the shoji, and is located at the lower part of the shoji. The amount of warp deformation of the shoji due to temperature rise tends to be small. Therefore, by not providing the thermally expandable member at this position, necessary and sufficient fireproof performance can be ensured while reducing the component cost and installation work of the thermally expandable member.

  In the joinery according to the present invention, the first thermally expandable member may be configured to have a smaller width in the prospective direction of the joinery than the second thermally expandable member. That is, since the temperature of the upper part of the shoji tends to rise compared to the lower part, when the joinery is heated, the first thermally expansible member expands earlier than the second thermally expansible member. Therefore, even if the first thermally expandable member is configured to be narrower than the second thermally expandable member, the first thermally expandable member is surely expanded before the upper part of the shoji is displaced in the expected direction due to warp deformation, and The gap between the frame can be closed. As a result, the part cost of the first thermally expandable member can be further reduced. In particular, in such a joinery, when the shoji is warped and deformed in the event of a fire, the amount of warping at the lower part of the shoji tends to be larger than the amount of warping at the upper part. Therefore, even if the first thermally expansible member disposed on the upper part of the shoji is configured to be narrower than the second thermally expansible member disposed on the lower part, sufficient fireproof performance can be ensured.

  In the joinery according to the present invention, the first thermally expansible member may be provided at a position near the outdoor side of the prospective surface. That is, the narrow first thermally expandable member is provided at a position near the outdoor side of the prospective surface, so that when the joinery receives the heat of fire from the outdoor side, it can be rapidly expanded. Further, when the joinery receives the heat of fire from the indoor side, the upper part of the shoji gets hot quickly, and the amount of warp of the shoji itself is smaller than the lower part, so the first thermal expansible member quickly closes the gap. be able to.

  In the joinery according to the present invention, the one vertical frame has a door stop piece disposed to face the indoor side surface of the shoji, and the outdoor side finding surface of the door stop piece includes the one vertical frame and the It is good also as a structure which faced the clearance gap formed between the said prospective surfaces of a shoji, and the thermal expansion member which expands when it heats was provided in the said outdoor side finding surface of the said door stop piece. If it does so, when the said fitting receives the heat of a fire, the clearance gap between a shoji and an opening frame can be reliably block | closed with a thermally expansible member. In particular, in the case of a configuration in which such a thermally expandable member is provided on a door stop piece at a position close to the indoor side of the opening frame, the position where the narrow first heat expandable member is close to the outdoor side of the prospective surface By being arranged in, it is possible to close the gap at the top of the shoji with the first thermally expandable member at an early stage even in the event of a fire from the outdoor side.

  In the joinery according to the present invention, three or more of the support tools are attached and heated to a position between the uppermost support tool and a support tool adjacent to the lower side of the uppermost support tool. Then, it is good also as a structure provided with the 3rd thermally expansible member which expand | swells. If it does so, even if it is a part with the strong restraint force by a support tool, generation | occurrence | production of the through-hole in the upper part which becomes high temperature easily at the time of a fire can be reliably block | closed with a 3rd thermally expansible member.

  According to the present invention, it is possible to reduce costs and improve work efficiency while ensuring sufficient fire prevention performance.

It is the front view which looked at the fitting which concerns on one Embodiment of this invention from the outdoor side. It is a longitudinal cross-sectional view of the joinery shown in FIG. It is a cross-sectional view of the joinery shown in FIG. It is a figure which shows the structure of the prospective surface of a suspending fence. It is sectional drawing which follows the VV line in FIG. It is sectional drawing which follows the VI-VI line in FIG. It is sectional drawing which follows the VII-VII line in FIG. It is a figure which shows the structure of the prospective surface of the hanger wrench of the joinery comprised with two support tools.

  Hereinafter, preferred embodiments of the joinery according to the present invention will be described and described in detail with reference to the accompanying drawings.

  FIG. 1 is a front view of a joinery 10 according to an embodiment of the present invention viewed from the outdoor side. FIG. 2 is a longitudinal sectional view of the joinery 10 shown in FIG. FIG. 3 is a cross-sectional view of the joinery 10 shown in FIG. As shown in FIGS. 1 to 3, the joinery 10 includes an opening frame 12 that is fixed to a building opening of the building, and a shoji 14 that is rotatably connected to the opening frame 12. In this embodiment, for example, a door installed at the entrance of a building or the like is illustrated as the joinery 10. However, the joinery 10 may be a rotary window such as a vertically opened window.

  The opening frame 12 is a rectangular opening 12e formed by four-frames an upper frame 12a, a lower frame 12b, and left and right vertical frames 12c and 12d. Each of the frames 12a to 12d is an extruded shape made of a metal material such as aluminum. The opening frame 12 is fixed to a building frame using an anchor or a fixture such as a nail or a screw.

  In this application, the prospective direction refers to the indoor / outdoor direction of the fitting 10, that is, the direction from the indoor side toward the outdoor side or the opposite direction (the direction indicated by the arrow Y in the figure), and the prospective surface is along the prospective direction. An extended surface. The finding direction is a direction orthogonal to the prospective direction, and in the case of the vertical frame 12c that is long in the vertical direction, the horizontal direction (direction indicated by an arrow X in the figure) orthogonal to the longitudinal direction is referred to. In the case of the long upper frame 12a or the like, it means the vertical direction (direction indicated by an arrow Z in the figure) perpendicular to the longitudinal direction. The finding surface is a surface along the finding direction. The inner side (inner circumference) of the frame-shaped member refers to, for example, the inner side of the opening frame 12, and the outer side (outer periphery) of the frame-shaped member refers to, for example, the outer side of the frame fixed to the casing of the opening frame 12.

  As shown in FIG. 2, the upper frame 12 a has a door stop piece 18 at a position close to the indoor side of the inner prospective surface 16. A tight material 20 is attached to the outdoor side finding surface 18a of the door stop piece 18 over the longitudinal direction. The lower frame 12b includes a frame bottom surface portion 22 protruding upward on the indoor side, and an inclined portion 24 inclined downward from the lower portion of the frame bottom surface portion 22 toward the outdoor side. The upper surface of the frame bottom surface portion 22 is the bottom surface of the opening 12e. The upper surface of the inclined portion 24 is a draining surface. A tight material 20 is attached to the outdoor side finding surface 22a of the frame bottom surface portion 22 in the longitudinal direction. As shown in FIG. 3, the vertical frames 12c and 12d have door stop pieces 30 and 32 at positions close to the indoor side of the inner prospective surfaces 26 and 28, respectively. The tight material 20 is attached to the outdoor side finding surfaces 30a and 32a of the door stop pieces 30 and 32 over the longitudinal direction.

  These door stop pieces 18, 30, 32 and the frame bottom surface portion 22 protrude toward the inside of the opening 12 e, and are disposed to face the indoor side surface 34 of the shoji 14, respectively, and serve as the door stop of the shoji 14.

  The shoji 14 is composed of an upper collar 14a, a lower collar 14b, a hanging collar 14c and a door-end collar 14d, and a face member 36 arranged on the inner side for four rounds. The shoji 14 is pivotally connected to the vertical frame 12c by using a support tool (hinge) 38a, 38b, 38c, so that the shoji 14 moves to the outdoor side in the prospective direction. Thus, the opening 12e is opened and closed. The support members 38a to 38c are connected between the inner prospective surface 26 of the vertical frame 12c and the prospective surface (outer prospective surface) 40 of the suspension base 14c opposite thereto. Three pieces are arranged along the vertical direction of the surface 40. The shoji 14 may be configured to open and close toward the indoor side in the prospective direction.

  As shown in FIG. 2, the upper collar 14a has an opening groove between a protruding piece 41 projecting inward from the outdoor end portion of the inner prospective surface and a pressing edge 42 attached to the indoor end portion of the inner prospective surface. 44 is formed. The upper end portion of the face material 36 is held in the opening groove 44 by using a sealing material 46 and a backup material 47. Instead of the sealing material 46 and the backup material 47, the face material 36 may be held using a glazing bead. The lower rod 14b, the suspension rod 14c, and the door rod 14d have substantially the same structure as the upper rod 14a, and therefore, the same reference numerals are given in the drawing and detailed description thereof is omitted. In other words, the lower rod 14b, the hanging rod 14c, and the door rod 14d form an opening groove 44 that holds each end of the face member 36 by the protruding piece 41 and the pushing edge 42. Note that the setting block 48 is provided between the bottom of the opening groove 44 and the end surface of the face member 36 in the lower rod 14b, the suspension rod 14c, and the door rod 14d. When a glazing bead is used to hold the face material 36, a setting block 48 may be disposed between the opening groove 44 of the upper collar 14a and the face material 36.

  The face material 36 is a multi-layer glass in which a pair of glass plates 36a and 36b are arranged facing each other with a spacer therebetween. In the case of this embodiment, the glass plate 36a arranged on the outdoor side is made of netted glass, and the glass plate 36b arranged on the indoor side is made of thin float glass. The glass plate 36a may be heat-resistant tempered glass or thick plate glass. The glass plate 36b may be netted glass, heat-resistant tempered glass, or the like. The face material 36 may be composed of a single-layer glass or a glass plate having three or more layers.

  Next, the fire prevention structure of the joinery 10 will be described. FIG. 4 is a diagram illustrating the configuration of the prospective surface 40 of the suspension base rod 14c. 5, 6, and 7 are cross-sectional views taken along lines VV, VI-VI, and VII-VII in FIG. 4, respectively.

  First, a fire prevention structure between the suspension base 14c of the shoji 14 and the vertical frame 12c of the opening frame 12 in the fitting 10 will be described. As shown in FIG. 4, the prospective surface 40 of the suspension base rod 14 c can be divided into four regions R <b> 1, R <b> 2, R <b> 3, and R <b> 4 in the longitudinal direction (vertical direction) with the support members 38 a to 38 c as partitions. Note that reference numeral 49 in FIG. 4 is a back plate to which the support tools 38a to 38c are fastened.

  In the case of this embodiment, a thermally expandable member (first thermally expandable member) 50 is provided in the region R1 above the uppermost support member 38a (see FIGS. 4 and 5), and the lowermost support portion 38c. A heat-expandable member (second heat-expandable member) 51 is provided in the region R4 below (see FIGS. 4 and 7). Further, a thermally expandable member (third thermally expandable member) 52 is provided in a region R2 between the uppermost support tool 38a and the support tool 38b adjacent below the upper support tool 38a (see FIGS. 4 and 6). . On the other hand, no thermally expandable member is provided in the region R3 between the lowermost support tool 38c and the support tool 38b adjacent to the uppermost support tool 38c. The heat-expandable members 50 to 52 are heated foam materials such as graphite that expand and expand when heated, and are bonded and fixed to the prospective surface 40 using an adhesive, a double-sided tape, or the like. The other thermally expandable members 60, 62 to 67, 69 and 71 described later have the same properties as the thermally expandable members 50 to 52.

  The thermal expansion member 50 in the region R1 has a width W1 in the prospective direction smaller than the prospective width W0 of the prospective surface 40, and is substantially the entire length in the longitudinal direction (vertical direction) of the region R1 excluding the lower part from the screw hole in the lower part of the region R1. It extends over. In the case of this embodiment, the thermally expandable member 50 is configured so that the width W1 is less than or equal to half of the expected width W0, preferably about one third, and is closer to the outdoor side than the center of the prospective surface 40 in the prospective direction. It should be arranged. In the configuration example shown in FIG. 4, the thermally expandable member 50 has a width W <b> 1 that is about one third of the expected width W <b> 0, and is disposed at the outdoor end of the prospective surface 40. The heat-expandable member 52 in the region R2 has substantially the same width as the width W1 of the heat-expandable member 50, is disposed at the outdoor end of the prospective surface 40, and is downward from the screw hole at the bottom of the region R2. It extends over substantially the entire length in the longitudinal direction except for. The thermally expandable member 52 may be omitted. The heat-expandable member 51 in the region R4 has a width W2 in the prospective direction set to be substantially the same as the prospective width W0 of the prospective surface 40, and extends from the screw hole at the bottom of the region R4 over substantially the entire length in the longitudinal direction excluding the lower part. Exist. The width W2 of the heat-expandable member 51 is preferably configured to be at least larger than half of the expected width W0, and is located on the indoor side in a state of straddling the prospective center of the prospective surface 40, preferably the indoor side end. It is good to arrange along. Thus, in the fitting 10 according to the present embodiment, the width W1 of the thermally expandable member 50 in the region R1 is smaller than the width W2 of the thermally expandable member 52 in the region R4.

  As shown in FIGS. 4 and 5, a drop-off prevention fitting 54 having a crank-shaped cross section is attached to the region R <b> 1 of the prospective surface 40 using a screw 55. The drop-off prevention metal fitting 54 prevents the heat-expandable member 50 from having a weak adhesion to the prospective surface 40 due to the narrow width W1 by pressing and holding the surface of the heat-expandable member 50. The drop-off prevention metal fitting 54 is also used for the thermally expandable member 52 in the region R2. The drop-off prevention metal fitting 54 may be omitted. As shown in FIGS. 4 and 7, the thermally expandable member 51 in the region R <b> 4 is prevented from falling off by a screw 56 fastened to the prospective surface 40. The screw 56 may be omitted.

  As shown in FIG. 6, in the fitting 10, when the shoji 14 is a specification using an electric lock 57 (see FIG. 3), the current-carrying metal fitting 58 for electric wiring from the opening frame 12 to the shoji 14 is the uppermost side. The support tool 38a is provided between the support tool 38b adjacent to the lower support tool 38a. That is, in the region R <b> 2 of the prospective surface 40, it is difficult to secure a space for attaching the thermally expandable member 52 because the current-carrying metal fitting 58 is disposed. In this regard, in the fitting 10, since the thermally expandable member 52 is configured to be narrow, the thermally expandable member 52 can be easily disposed on the side of the current-carrying metal fitting 58 (see FIG. 6).

  As shown in FIGS. 5 to 7, the vertical frame 12 c opposed to the suspension base rod 14 c is provided with a thermally expandable member 60 on the outdoor-side finding surface 30 a of the door stop piece 30. The thermally expandable member 60 is provided over substantially the entire length in the longitudinal direction of the outdoor-side finding surface 30a. The outdoor-side finding surface 30a faces a gap C formed between the inner prospective surface 26 of the vertical frame 12c and the prospective surface 40 of the hanging rod 14c.

  When the joinery 10 as described above is heated by, for example, a fire from the indoor side, the shoji 14 is deformed in an arcuate shape so that the center portion projects in the vertical direction and the center portion projects to the indoor side and the upper and lower end portions project to the outdoor side. May occur. In this case, the thermally expandable members 50 and 60 rapidly expand at a portion above the support 38a that easily rises in temperature. As a result, the warping deformation of the shoji 14 causes the region R1 to project outward and the gap C to expand, and the thermally expandable members 50 and 60 expand to form the gap C before the indoor and outdoor through holes are formed. It is blocked. That is, since the upper part of the joinery 10 becomes high temperature in a short time, even the thermally expandable member 50 that is narrow and arranged near the outdoor side expands in a short time. For this reason, in joinery 10, sufficient fire-proof performance is securable, reducing component cost compared with the case where the wide thermal expansion member similar to the thermal expansion member 51 of area | region R4 is provided in area | region R1, for example.

  Moreover, in the site | part below the support tool 38c from which temperature does not rise easily, the wide thermal expansible member 51 is provided in the position which brought near to the indoor side at the prospective surface 40 of the hanging base rod 14c. As a result, the region R4 protrudes to the outdoor side due to the warp deformation of the shoji 14 and the gap C is enlarged, and the thermally expandable members 51 and 60 are expanded and the gap C is formed before the through-holes are formed inside and outside the room. It is blocked. Thus, although the temperature rise of the lower part of the shoji 14 is slower than that of the upper part, the wide thermal expansible member 51 is provided close to the indoor side of the prospective surface 40, thereby preventing the formation of a through hole inside and outside the room. it can.

  In particular, in such a joinery 10, when the shoji 14 is warped and deformed during a fire, the warping amount at the lower part of the shoji 14 tends to be larger than the warping quantity at the upper part. Therefore, even if the thermally expandable member 50 disposed on the upper part of the shoji 14 is configured to be narrower than the thermally expandable member 51 disposed on the lower part, sufficient fireproof performance can be ensured. On the other hand, since the heat-expandable member 51 disposed under the shoji 14 is configured to be wide, even if the shoji 14 is greatly warped and deformed, the gap can be reliably closed.

  Between the support tools 38a and 38b and between the support tools 38b and 38c, the warp deformation amount of the shoji 14 tends to be smaller than the upper and lower portions due to the restraining force of the support tools 38a to 38c. For this reason, the joinery 10 may omit the thermally expandable member 52 in the region R2 as described above. That is, in the regions R2 and R3 in the prospective surface 40 of the hanging base rod 14c, the joinery 10 can ensure the necessary and sufficient fire prevention performance without providing a thermally expandable member. Thereby, the excessive installation of a thermally expansible member can be suppressed, and the increase in component cost and the fall of work efficiency can be suppressed. Moreover, in the fitting 10, the gap C corresponding to the regions R <b> 2 and R <b> 3 can be closed by the thermally expandable member 60 on the opening frame 12 side. Thereby, even if it does not provide a thermally expansible member in the shoji 14 side, higher fireproof performance is securable. However, in the case where it is necessary to more reliably close the gap C due to the specification of the opening frame 12, for example, because the opening frame 12 is a refurbished frame installed inside the existing frame, as shown in FIG. The thermally expandable member 52 may be provided in a region R2 where the temperature becomes high next to the region R1.

  For example, when the joinery 10 is heated by a fire from the outside of the room, the shoji 14 is deformed in an arcuate shape such that the center part projects in the up-down direction and the center part projects outside and the both upper and lower ends project indoors. May occur. In this case, the thermally expandable member 50 located at the position closer to the outdoor side rapidly expands at a position above the support 38a where the temperature easily rises, and at a position below the support 38c where the temperature hardly rises. The wide thermal expansion member 51 quickly expands and closes the gap C. As a result, the warping deformation of the shoji 14 causes the regions R1 and R4 to protrude to the indoor side and the gap C to expand, and the thermally expandable members 50 and 51 expand before the through-holes are formed inside and outside the gap. C is blocked.

  Next, the fire prevention structure in parts other than the suspension side part in the joinery 10 will be described.

  As shown in FIG. 2, in the upper frame 12 a, a thermally expandable member 62 is provided on the outdoor-side finding surface 18 a of the door stop piece 18. In the lower frame 12 b, a thermally expandable member 63 is provided on the outdoor-side finding surface 22 a of the frame bottom surface portion 22, and a thermally expandable member 64 is provided on the upper surface (inside prospective surface) 24 a of the inclined portion 24. As shown in FIG. 3, in the vertical frame 12 d, a thermally expandable member 65 is provided on the outdoor side finding surface 32 a of the door stop piece 32. As shown in FIG. 2, in the upper collar 14 a, thermally expandable members 66 and 67 are respectively provided on the indoor-side finding surface 41 a of the protruding piece 41 that is the inside of the opening groove 44 and the outdoor-side finding surface 42 a of the pressing edge 42. Provided. Thermal expansion members 66 and 67 similar to the upper rod 14a are provided for the lower rod 14b, the suspension rod 14c and the door rod 14d. Furthermore, in the lower rod 14b, a thermally expansible member 69 is provided on the outer prospective surface 68, and in the door end rod 14d, a thermally expansible member 71 is provided on the outer prospective surface 70. These thermally expandable members 62 to 67, 69, and 71 are provided over substantially the entire length in the longitudinal direction of the frames 12a to 12d and the flanges 14a to 14d, for example.

  Therefore, when the joinery 10 is heated by a fire from the indoor side or the indoor side, the thermally expandable members 62, 63, 64, 65, 69, and 71 are expanded to expand the frames 12a, 12b, 12d and the flanges 14a. , 14b, 14d are closed. Furthermore, when the thermally expandable members 66 and 67 expand, the gap between the four peripheral end surfaces of the shoji 14 and the opening groove 44 is closed. As a result, it is more reliably prevented that the through hole in the indoor / outdoor direction is formed in the joinery 10 together with the above-described thermally expandable members 50 to 52, 60, and higher fire prevention performance is obtained.

  By the way, for example, in the specification where the vertical dimension of the fitting 10 is small, the shoji 14 may be connected to the opening frame 12 by two support tools 38a and 38c as shown in FIG. In the case of this configuration, the prospective surface 40A of the suspension base rod 14c can be partitioned into three regions R11, R12, and R13 in the longitudinal direction (vertical direction) with the support members 38a and 38c as partitions. Therefore, in the prospective surface 40A, a thermally expandable member (first thermally expandable member) 50 is provided in the region R11 above the uppermost support member 38a (see also FIG. 5), and the lowermost support portion 38c. A heat-expandable member (second heat-expandable member) 51 is provided in the region R13 below (see also FIG. 7), the lowermost support tool 38c, and the support tool 38a adjacent to the upper side of the support tool 38c. It is preferable that the region R12 between the two is not provided with a thermally expandable member. If it does so, also in the fitting 10 which has the two support tools 38a and 38c, sufficient fire prevention performance and low cost can be reconciled.

  It should be noted that the present invention is not limited to the above-described embodiment, and it is needless to say that the present invention can be freely changed without departing from the gist of the present invention.

  In the said embodiment, although the structure which hold | maintained the face material 36 with each ridge 14a-14d as the shoji 14 was illustrated, the shoji 14 provides a heat insulating material between the surface materials each provided indoors and outdoors, and four circumferences are aggregates. It may be an enclosed flash structure or the like. Further, the shoji 14 may be configured without the face material 36.

  In the said embodiment, although the joinery 10 of the structure which attached the shoji 14 to the opening frame 12 with three or two support tools 38a-38c was illustrated, the number of installation of a support tool may be four or more. Even when there are four or more supports, a narrow thermal expansion member 50 is provided at a position above the uppermost support, and a wide thermal expandability is provided at a position below the lowermost support. The member 51 is provided, and the narrow thermal expansion member 50 may or may not be provided at a position between the uppermost support tool and the lower support tool. What is necessary is just to set it as the structure which does not provide a thermally expansible member in the position between upper support tools.

  DESCRIPTION OF SYMBOLS 10 Joinery, 12 Opening frame, 12a Upper frame, 12b Lower frame, 12c, 12d Vertical frame, 12e Opening part, 14 Shoji, 14a Upper rod, 14b Lower rod, 14c Suspension rod, 14d Door rod, 16, 26, 28 Inner prospective surface, 18, 30, 32 Door-contacting piece, 18a, 22a, 30a, 32a, 42a Outdoor-side finding surface, 34 Indoor-side surface, 38a-38c Support, 40, 40A Expected surface, 50-52, 60 , 62-67, 69, 71 Thermally expandable member

Claims (6)

The opening frame, a plurality of supporting tools attached along the vertical direction of one vertical frame of the opening frame, and the plurality of supporting tools attached along the vertical direction of the prospective surface facing the one vertical frame A shoji that is supported so as to be rotatable with respect to the opening frame,
The prospective surface of the shoji is provided with a first thermally expandable member that expands when heated, at a position above the uppermost support among the plurality of supports. The second thermally expandable member that expands when heated is provided at a position below the lowermost supporter among them. In the joinery of claim 1,
A heat-expandable member that expands when heated is not provided at a position between the lowermost support tool and a support tool adjacent to the lowermost support tool. Joinery to do. In the joinery according to claim 1 or 2,
The first heat-expandable member has a smaller width in the prospective direction of the joinery than the second heat-expandable member. In the joinery according to claim 3,
The first heat-expandable member is provided at a position near the outdoor side of the prospective surface. In the joinery according to claim 4,
The one vertical frame has a door stop piece arranged to face the indoor side surface of the shoji, and the outdoor finding surface of the door hit piece is between the one vertical frame and the prospective face of the shoji screen. Facing the gap formed between them,
A joinery characterized in that a heat-expandable member that expands when heated is provided on the outdoor-side finding surface of the door stop piece. In the joinery according to any one of claims 1 to 5,
Three or more of the support tools are attached,
A third thermally expandable member that expands when heated is provided at a position between the uppermost support tool and a support tool adjacent to the lowermost support tool. Joinery to do.

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